jack: Drop support for old (2012) JACK versions
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libjack           JACK audio sound server
207   --enable-libkvazaar        HEVC video encoding
208   --enable-libmp3lame        MP3 audio encoding
209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
210   --enable-libopencore-amrwb AMR-WB audio decoding
211   --enable-libopencv         computer vision
212   --enable-libopenh264       H.264 video encoding/decoding
213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
214   --enable-libopus           Opus audio encoding/decoding
215   --enable-libpulse          Pulseaudio sound server
216   --enable-librtmp           RTMP streaming
217   --enable-libschroedinger   Dirac video encoding/decoding
218   --enable-libsnappy         snappy compression
219   --enable-libspeex          Speex audio encoding/decoding
220   --enable-libtheora         Theora video encoding/decoding
221   --enable-libtwolame        MP2 audio encoding
222   --enable-libvo-aacenc      AAC audio encoding
223   --enable-libvo-amrwbenc    AMR-WB audio encoding
224   --enable-libvorbis         Vorbis audio encoding/decoding
225   --enable-libvpx            VP* video encoding/decoding
226   --enable-libwavpack        Wavpack audio encoding/decoding
227   --enable-libwebp           WebP image encoding/decoding
228   --enable-libx264           H.264 video encoding
229   --enable-libx265           HEVC video encoding
230   --enable-libxavs           Chinese AVS video encoding
231   --enable-libxcb            X window system protocol communication
232   --enable-libxcb-shm        X11 shm communication [auto]
233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
234   --enable-libxvid           MPEG-4 ASP video encoding
235   --enable-openssl           crypto
236   --enable-zlib              compression [autodetect]
237
238   The following libraries provide various hardware acceleration features:
239   --enable-cuda    Nvidia CUDA (dynamically linked)
240   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
241   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
242   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
243   --enable-libnpp  Nvidia CUDA processing
244   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
245   --enable-nvenc   Nvidia video encoding
246   --enable-omx     OpenMAX IL
247   --enable-omx-rpi OpenMAX IL for Raspberry Pi
248   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
249   --enable-vda     Apple Video Decode Acceleration [auto]
250   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
251
252 Toolchain options:
253   --arch=ARCH              select architecture [$arch]
254   --cpu=CPU                select the minimum required CPU (affects
255                            instruction selection, may crash on older CPUs)
256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
257   --enable-cross-compile   assume a cross-compiler is used
258   --sysroot=PATH           root of cross-build tree
259   --sysinclude=PATH        location of cross-build system headers
260   --target-os=OS           compiler targets OS [$target_os]
261   --target-exec=CMD        command to run executables on target
262   --target-path=DIR        path to view of build directory on target
263   --target-samples=DIR     path to samples directory on target
264   --toolchain=NAME         set tool defaults according to NAME
265   --nm=NM                  use nm tool
266   --ar=AR                  use archive tool AR [$ar_default]
267   --as=AS                  use assembler AS [$as_default]
268   --cc=CC                  use C compiler CC [$cc_default]
269   --objcc=OCC              use ObjC compiler OCC [$cc_default]
270   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
271   --ld=LD                  use linker LD
272   --x86asmexe=X86ASM       use x86 assembler X86ASM
273   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
274   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
275   --host-cc=HOSTCC         use host C compiler HOSTCC
276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
278   --host-ld=HOSTLD         use host linker HOSTLD
279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
280   --host-libs=HLIBS        use libs HLIBS when linking for host
281   --host-os=OS             compiler host OS [$target_os]
282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
283   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
285   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
286   --extra-libs=ELIBS       add ELIBS [$ELIBS]
287   --extra-version=STRING   version string suffix []
288   --optflags=OPTFLAGS      override optimization-related compiler flags
289   --enable-pic             build position-independent code
290   --enable-thumb           compile for Thumb instruction set
291   --enable-lto             use link-time optimization
292   --env="ENV=override"     override the environment variables
293
294 Advanced options (experts only):
295   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
296   --custom-allocator=NAME  use a supported custom allocator
297   --disable-symver         disable symbol versioning
298   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
299   --disable-safe-bitstream-reader
300                            disable buffer boundary checking in bitreaders
301                            (faster, but may crash)
302   --enable-sram            allow use of on-chip SRAM
303
304 Optimization options (experts only):
305   --disable-asm            disable all assembly optimizations
306   --disable-altivec        disable AltiVec optimizations
307   --disable-vsx            disable VSX optimizations
308   --disable-power8         disable POWER8 optimizations
309   --disable-amd3dnow       disable 3DNow! optimizations
310   --disable-amd3dnowext    disable 3DNow! extended optimizations
311   --disable-mmx            disable MMX optimizations
312   --disable-mmxext         disable MMXEXT optimizations
313   --disable-sse            disable SSE optimizations
314   --disable-sse2           disable SSE2 optimizations
315   --disable-sse3           disable SSE3 optimizations
316   --disable-ssse3          disable SSSE3 optimizations
317   --disable-sse4           disable SSE4 optimizations
318   --disable-sse42          disable SSE4.2 optimizations
319   --disable-avx            disable AVX optimizations
320   --disable-xop            disable XOP optimizations
321   --disable-fma3           disable FMA3 optimizations
322   --disable-fma4           disable FMA4 optimizations
323   --disable-avx2           disable AVX2 optimizations
324   --disable-armv5te        disable armv5te optimizations
325   --disable-armv6          disable armv6 optimizations
326   --disable-armv6t2        disable armv6t2 optimizations
327   --disable-vfp            disable VFP optimizations
328   --disable-neon           disable NEON optimizations
329   --disable-inline-asm     disable use of inline assembly
330   --disable-x86asm         disable use of standalone x86 assembly
331
332 Developer options (useful when working on Libav itself):
333   --disable-debug          disable debugging symbols
334   --enable-debug=LEVEL     set the debug level [$debuglevel]
335   --disable-optimizations  disable compiler optimizations
336   --enable-extra-warnings  enable more compiler warnings
337   --samples=PATH           location of test samples for FATE, if not set use
338                            \$LIBAV_SAMPLES at make invocation time.
339   --enable-neon-clobber-test check NEON registers for clobbering (should be
340                            used only for debugging purposes)
341   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
342                            should be used only for debugging purposes)
343   --enable-random          randomly enable/disable components
344   --disable-random
345   --enable-random=LIST     randomly enable/disable specific components or
346   --disable-random=LIST    component groups. LIST is a comma-separated list
347                            of NAME[:PROB] entries where NAME is a component
348                            (group) and PROB the probability associated with
349                            NAME (default 0.5).
350   --random-seed=VALUE      seed value for --enable/disable-random
351   --disable-valgrind-backtrace do not print a backtrace under Valgrind
352                            (only applies to --disable-optimizations builds)
353   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
354                            in the name) of tests whose result is ignored
355
356 NOTE: Object files are built at the place where configure is launched.
357 EOF
358   exit 0
359 }
360
361 quotes='""'
362
363 log(){
364     echo "$@" >> $logfile
365 }
366
367 log_file(){
368     log BEGIN $1
369     i=1
370     while read line; do
371         printf '%5s   %s\n' "${i}" "${line}"
372         i=$(($i+1))
373     done < $1 >> $logfile
374     log END $1
375 }
376
377 echolog(){
378     log "$@"
379     echo "$@"
380 }
381
382 warn(){
383     log "WARNING: $*"
384     WARNINGS="${WARNINGS}WARNING: $*\n"
385 }
386
387 die(){
388     echolog "$@"
389     cat <<EOF
390
391 If you think configure made a mistake, make sure you are using the latest
392 version from Git.  If the latest version fails, report the problem to the
393 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
394 EOF
395     if disabled logging; then
396         cat <<EOF
397 Rerun configure with logging enabled (do not use --disable-logging), and
398 include the log this produces with your report.
399 EOF
400     else
401         cat <<EOF
402 Include the log file "$logfile" produced by configure as this will help
403 solving the problem.
404 EOF
405     fi
406     exit 1
407 }
408
409 # Avoid locale weirdness, besides we really just want to translate ASCII.
410 toupper(){
411     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
412 }
413
414 tolower(){
415     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
416 }
417
418 c_escape(){
419     echo "$*" | sed 's/["\\]/\\\0/g'
420 }
421
422 sh_quote(){
423     v=$(echo "$1" | sed "s/'/'\\\\''/g")
424     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
425     echo "$v"
426 }
427
428 cleanws(){
429     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
430 }
431
432 filter(){
433     pat=$1
434     shift
435     for v; do
436         eval "case $v in $pat) printf '%s ' $v ;; esac"
437     done
438 }
439
440 filter_out(){
441     pat=$1
442     shift
443     for v; do
444         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
445     done
446 }
447
448 map(){
449     m=$1
450     shift
451     for v; do eval $m; done
452 }
453
454 add_suffix(){
455     suffix=$1
456     shift
457     for v; do echo ${v}${suffix}; done
458 }
459
460 set_all(){
461     value=$1
462     shift
463     for var in $*; do
464         eval $var=$value
465     done
466 }
467
468 set_weak(){
469     value=$1
470     shift
471     for var; do
472         eval : \${$var:=$value}
473     done
474 }
475
476 sanitize_var_name(){
477     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
478 }
479
480 set_safe(){
481     var=$1
482     shift
483     eval $(sanitize_var_name "$var")='$*'
484 }
485
486 get_safe(){
487     eval echo \$$(sanitize_var_name "$1")
488 }
489
490 pushvar(){
491     for pvar in $*; do
492         eval level=\${${pvar}_level:=0}
493         eval ${pvar}_${level}="\$$pvar"
494         eval ${pvar}_level=$(($level+1))
495     done
496 }
497
498 popvar(){
499     for pvar in $*; do
500         eval level=\${${pvar}_level:-0}
501         test $level = 0 && continue
502         eval level=$(($level-1))
503         eval $pvar="\${${pvar}_${level}}"
504         eval ${pvar}_level=$level
505         eval unset ${pvar}_${level}
506     done
507 }
508
509 enable(){
510     set_all yes $*
511 }
512
513 disable(){
514     set_all no $*
515 }
516
517 enable_weak(){
518     set_weak yes $*
519 }
520
521 disable_weak(){
522     set_weak no $*
523 }
524
525 enable_safe(){
526     for var; do
527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 disable_safe(){
532     for var; do
533         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
534     done
535 }
536
537 do_enable_deep(){
538     for var; do
539         enabled $var && continue
540         eval sel="\$${var}_select"
541         eval sgs="\$${var}_suggest"
542         pushvar var sgs
543         enable_deep $sel
544         popvar sgs
545         enable_deep_weak $sgs
546         popvar var
547     done
548 }
549
550 enable_deep(){
551     do_enable_deep $*
552     enable $*
553 }
554
555 enable_deep_weak(){
556     for var; do
557         disabled $var && continue
558         pushvar var
559         do_enable_deep $var
560         popvar var
561         enable_weak $var
562     done
563 }
564
565 enabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xyes"
568 }
569
570 disabled(){
571     test "${1#!}" = "$1" && op== || op=!=
572     eval test "x\$${1#!}" $op "xno"
573 }
574
575 enabled_all(){
576     for opt; do
577         enabled $opt || return 1
578     done
579 }
580
581 disabled_all(){
582     for opt; do
583         disabled $opt || return 1
584     done
585 }
586
587 enabled_any(){
588     for opt; do
589         enabled $opt && return 0
590     done
591 }
592
593 disabled_any(){
594     for opt; do
595         disabled $opt && return 0
596     done
597     return 1
598 }
599
600 set_default(){
601     for opt; do
602         eval : \${$opt:=\$${opt}_default}
603     done
604 }
605
606 is_in(){
607     value=$1
608     shift
609     for var in $*; do
610         [ $var = $value ] && return 0
611     done
612     return 1
613 }
614
615 check_deps(){
616     for cfg; do
617         enabled ${cfg}_checking && die "Circular dependency for $cfg."
618         disabled ${cfg}_checking && continue
619         enable ${cfg}_checking
620         append allopts $cfg
621
622         eval dep_all="\$${cfg}_deps"
623         eval dep_any="\$${cfg}_deps_any"
624         eval dep_con="\$${cfg}_conflict"
625         eval dep_sel="\$${cfg}_select"
626         eval dep_sgs="\$${cfg}_suggest"
627         eval dep_ifa="\$${cfg}_if"
628         eval dep_ifn="\$${cfg}_if_any"
629
630         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
631         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
632         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
633
634         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
635         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
636         enabled_all  $dep_all || disable $cfg
637         enabled_any  $dep_any || disable $cfg
638         disabled_all $dep_con || disable $cfg
639         disabled_any $dep_sel && disable $cfg
640
641         if enabled $cfg; then
642             enable_deep $dep_sel
643             enable_deep_weak $dep_sgs
644             for dep in $dep_all $dep_any $dep_sgs; do
645                 # filter out library deps, these do not belong in extralibs
646                 is_in $dep $LIBRARY_LIST && continue
647                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
648             done
649         fi
650
651         disable ${cfg}_checking
652     done
653 }
654
655 print_config(){
656     pfx=$1
657     files=$2
658     shift 2
659     map 'eval echo "$v \${$v:-no}"' "$@" |
660     awk "BEGIN { split(\"$files\", files) }
661         {
662             c = \"$pfx\" toupper(\$1);
663             v = \$2;
664             sub(/yes/, 1, v);
665             sub(/no/,  0, v);
666             for (f in files) {
667                 file = files[f];
668                 if (file ~ /\\.h\$/) {
669                     printf(\"#define %s %d\\n\", c, v) >>file;
670                 } else if (file ~ /\\.asm\$/) {
671                     printf(\"%%define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.mak\$/) {
673                     n = -v ? \"\" : \"!\";
674                     printf(\"%s%s=yes\\n\", n, c) >>file;
675                 }
676             }
677         }"
678 }
679
680 print_enabled(){
681     suf=$1
682     shift
683     for v; do
684         enabled $v && printf "%s\n" ${v%$suf}
685     done
686 }
687
688 append(){
689     var=$1
690     shift
691     eval "$var=\"\$$var $*\""
692 }
693
694 prepend(){
695     var=$1
696     shift
697     eval "$var=\"$* \$$var\""
698 }
699
700 unique(){
701     var=$1
702     uniq_list=""
703     for tok in $(eval echo \$$var); do
704         uniq_list="$(filter_out $tok $uniq_list) $tok"
705     done
706     eval "$var=\"${uniq_list}\""
707 }
708
709 resolve(){
710     var=$1
711     tmpvar=
712     for entry in $(eval echo \$$var); do
713         tmpvar="$tmpvar $(eval echo \$${entry})"
714     done
715     eval "$var=\"${tmpvar}\""
716 }
717
718 add_cppflags(){
719     append CPPFLAGS "$@"
720 }
721
722 add_cflags(){
723     append CFLAGS $($cflags_filter "$@")
724 }
725
726 add_cflags_headers(){
727     append CFLAGS_HEADERS $($cflags_filter "$@")
728 }
729
730 add_asflags(){
731     append ASFLAGS $($asflags_filter "$@")
732 }
733
734 add_objcflags(){
735     append OBJCFLAGS $($objcflags_filter "$@")
736 }
737
738 add_ldflags(){
739     append LDFLAGS $($ldflags_filter "$@")
740 }
741
742 add_ldexeflags(){
743     append LDEXEFLAGS $($ldflags_filter "$@")
744 }
745
746 add_stripflags(){
747     append STRIPFLAGS "$@"
748 }
749
750 add_extralibs(){
751     prepend extralibs $($ldflags_filter "$@")
752 }
753
754 add_host_cppflags(){
755     append host_cppflags "$@"
756 }
757
758 add_host_cflags(){
759     append host_cflags $($host_cflags_filter "$@")
760 }
761
762 add_host_ldflags(){
763     append host_ldflags $($host_ldflags_filter "$@")
764 }
765
766 add_compat(){
767     append compat_objs $1
768     shift
769     map 'add_cppflags -D$v' "$@"
770 }
771
772 check_cmd(){
773     log "$@"
774     "$@" >> $logfile 2>&1
775 }
776
777 cc_o(){
778     eval printf '%s\\n' $CC_O
779 }
780
781 cc_e(){
782     eval printf '%s\\n' $CC_E
783 }
784
785 check_cc(){
786     log check_cc "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
790 }
791
792 check_objcc(){
793     log check_objcc "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
797 }
798
799 check_cpp(){
800     log check_cpp "$@"
801     cat > $TMPC
802     log_file $TMPC
803     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
804 }
805
806 as_o(){
807     eval printf '%s\\n' $AS_O
808 }
809
810 check_as(){
811     log check_as "$@"
812     cat > $TMPS
813     log_file $TMPS
814     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
815 }
816
817 check_inline_asm(){
818     log check_inline_asm "$@"
819     name="$1"
820     code="$2"
821     shift 2
822     disable $name
823     check_cc "$@" <<EOF && enable $name
824 void foo(void){ __asm__ volatile($code); }
825 EOF
826 }
827
828 check_insn(){
829     log check_insn "$@"
830     check_inline_asm ${1}_inline "\"$2\""
831     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
832 }
833
834 check_x86asm(){
835     log check_x86asm "$@"
836     echo "$1" > $TMPS
837     log_file $TMPS
838     shift 1
839     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
840 }
841
842 ld_o(){
843     eval printf '%s\\n' $LD_O
844 }
845
846 check_ld(){
847     log check_ld "$@"
848     flags=$(filter_out '-l*' "$@")
849     libs=$(filter '-l*' "$@")
850     check_cc $($cflags_filter $flags) || return
851     flags=$($ldflags_filter $flags)
852     libs=$($ldflags_filter $libs)
853     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
854 }
855
856 print_include(){
857     hdr=$1
858     test "${hdr%.h}" = "${hdr}" &&
859         echo "#include $hdr"    ||
860         echo "#include <$hdr>"
861 }
862
863 check_code(){
864     log check_code "$@"
865     check=$1
866     headers=$2
867     code=$3
868     shift 3
869     {
870         for hdr in $headers; do
871             print_include $hdr
872         done
873         echo "int main(void) { $code; return 0; }"
874     } | check_$check "$@"
875 }
876
877 check_cppflags(){
878     log check_cppflags "$@"
879     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
880 #include <stdlib.h>;
881 EOF
882 }
883
884 test_cflags(){
885     log test_cflags "$@"
886     set -- $($cflags_filter "$@")
887     check_cc "$@" <<EOF
888 int x;
889 EOF
890 }
891
892 check_cflags(){
893     log check_cflags "$@"
894     test_cflags "$@" && add_cflags "$@"
895 }
896
897 test_objcflags(){
898     log test_objcflags "$@"
899     set -- $($objcflags_filter "$@")
900     check_objcc "$@" <<EOF
901 int x;
902 EOF
903 }
904
905 check_objcflags(){
906     log check_objcflags "$@"
907     test_objcflags "$@" && add_objcflags "$@"
908 }
909
910 test_ldflags(){
911     log test_ldflags "$@"
912     check_ld "$@" <<EOF
913 int main(void){ return 0; }
914 EOF
915 }
916
917 check_ldflags(){
918     log check_ldflags "$@"
919     test_ldflags "$@" && add_ldflags "$@"
920 }
921
922 test_stripflags(){
923     log test_stripflags "$@"
924     # call check_cc to get a fresh TMPO
925     check_cc <<EOF
926 int main(void) { return 0; }
927 EOF
928     check_cmd $strip $STRIPFLAGS "$@" $TMPO
929 }
930
931 check_stripflags(){
932     log check_stripflags "$@"
933     test_stripflags "$@" && add_stripflags "$@"
934 }
935
936 check_header(){
937     log check_header "$@"
938     header=$1
939     shift
940     disable_safe $header
941     check_cpp "$@" <<EOF && enable_safe $header
942 #include <$header>
943 int x;
944 EOF
945 }
946
947 check_func(){
948     log check_func "$@"
949     func=$1
950     shift
951     disable $func
952     check_ld "$@" <<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 $func
965     check_ld "$@" <<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) $func; }"
983         done
984         echo "int main(void) { return 0; }"
985     } | check_ld "$@" && enable $funcs && enable_safe $headers
986 }
987
988 check_cpp_condition(){
989     log check_cpp_condition "$@"
990     header=$1
991     condition=$2
992     shift 2
993     check_cpp "$@" <<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 "$flags")
1007     check_cpp "$@" <<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 ${name}_extralibs="\$@"
1023 }
1024
1025 check_pkg_config(){
1026     log check_pkg_config "$@"
1027     name="$1"
1028     pkg_version="$2"
1029     pkg="${2%% *}"
1030     headers="$3"
1031     funcs="$4"
1032     shift 4
1033     disable $name
1034     check_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 $name &&
1039         add_cflags    "$pkg_cflags" &&
1040         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1041 }
1042
1043 check_exec(){
1044     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1045 }
1046
1047 check_exec_crash(){
1048     log check_exec_crash "$@"
1049     code=$(cat)
1050
1051     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1052     # are safe but may not be available everywhere.  Thus we use
1053     # raise(SIGTERM) instead.  The check is run in a subshell so we
1054     # can redirect the "Terminated" message from the shell.  SIGBUS
1055     # is not defined by standard C so it is used conditionally.
1056
1057     (check_exec "$@") >> $logfile 2>&1 <<EOF
1058 #include <signal.h>
1059 static void sighandler(int sig){
1060     raise(SIGTERM);
1061 }
1062 int foo(void){
1063     $code
1064 }
1065 int (*func_ptr)(void) = foo;
1066 int main(void){
1067     signal(SIGILL, sighandler);
1068     signal(SIGFPE, sighandler);
1069     signal(SIGSEGV, sighandler);
1070 #ifdef SIGBUS
1071     signal(SIGBUS, sighandler);
1072 #endif
1073     return func_ptr();
1074 }
1075 EOF
1076 }
1077
1078 check_type(){
1079     log check_type "$@"
1080     headers=$1
1081     type=$2
1082     shift 2
1083     disable_safe "$type"
1084     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1085 }
1086
1087 check_struct(){
1088     log check_struct "$@"
1089     headers=$1
1090     struct=$2
1091     member=$3
1092     shift 3
1093     disable_safe "${struct}_${member}"
1094     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1095         enable_safe "${struct}_${member}"
1096 }
1097
1098 check_builtin(){
1099     log check_builtin "$@"
1100     name=$1
1101     headers=$2
1102     builtin=$3
1103     shift 3
1104     disable "$name"
1105     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1106 }
1107
1108 check_compile_assert(){
1109     log check_compile_assert "$@"
1110     name=$1
1111     headers=$2
1112     condition=$3
1113     shift 3
1114     disable "$name"
1115     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1116 }
1117
1118 require(){
1119     log require "$@"
1120     name_version="$1"
1121     name="${1%% *}"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1126 }
1127
1128 require_header(){
1129     log require "$@"
1130     header="$1"
1131     shift
1132     check_header "$header" "$@" || die "ERROR: $header not found"
1133 }
1134
1135 require_cpp_condition(){
1136     log require "$@"
1137     header="$1"
1138     condition="$2"
1139     shift 2
1140     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1141 }
1142
1143 require_pkg_config(){
1144     log require_pkg_config "$@"
1145     pkg_version="$2"
1146     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1147 }
1148
1149 hostcc_e(){
1150     eval printf '%s\\n' $HOSTCC_E
1151 }
1152
1153 hostcc_o(){
1154     eval printf '%s\\n' $HOSTCC_O
1155 }
1156
1157 check_host_cc(){
1158     log check_host_cc "$@"
1159     cat > $TMPC
1160     log_file $TMPC
1161     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1162 }
1163
1164 check_host_cpp(){
1165     log check_host_cpp "$@"
1166     cat > $TMPC
1167     log_file $TMPC
1168     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1169 }
1170
1171 check_host_cppflags(){
1172     log check_host_cppflags "$@"
1173     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1174 #include <stdlib.h>;
1175 EOF
1176 }
1177
1178 check_host_cflags(){
1179     log check_host_cflags "$@"
1180     set -- $($host_cflags_filter "$@")
1181     check_host_cc "$@" <<EOF && append host_cflags "$@"
1182 int x;
1183 EOF
1184 }
1185
1186 check_host_cpp_condition(){
1187     log check_host_cpp_condition "$@"
1188     header=$1
1189     condition=$2
1190     shift 2
1191     check_host_cpp "$@" <<EOF
1192 #include <$header>
1193 #if !($condition)
1194 #error "unsatisfied condition: $condition"
1195 #endif
1196 EOF
1197 }
1198
1199 apply(){
1200     file=$1
1201     shift
1202     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1203 }
1204
1205 cp_if_changed(){
1206     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1207     mkdir -p "$(dirname $2)"
1208     cp -f "$1" "$2"
1209 }
1210
1211 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1212 # system-dependent things.
1213
1214 AVCODEC_COMPONENTS="
1215     bsfs
1216     decoders
1217     encoders
1218     hwaccels
1219     parsers
1220 "
1221
1222 AVDEVICE_COMPONENTS="
1223     indevs
1224     outdevs
1225 "
1226 AVFILTER_COMPONENTS="
1227     filters
1228 "
1229 AVFORMAT_COMPONENTS="
1230     demuxers
1231     muxers
1232     protocols
1233 "
1234
1235 AVRESAMPLE_COMPONENTS=""
1236 AVUTIL_COMPONENTS=""
1237
1238 COMPONENT_LIST="
1239     $AVCODEC_COMPONENTS
1240     $AVDEVICE_COMPONENTS
1241     $AVFILTER_COMPONENTS
1242     $AVFORMAT_COMPONENTS
1243     $AVRESAMPLE_COMPONENTS
1244     $AVUTIL_COMPONENTS
1245 "
1246
1247 EXAMPLE_LIST="
1248     decode_audio_example
1249     decode_video_example
1250     encode_audio_example
1251     encode_video_example
1252     filter_audio_example
1253     metadata_example
1254     output_example
1255     qsvdec_example
1256     transcode_aac_example
1257 "
1258
1259 # catchall list of things that require external libs to link
1260 EXTRALIBS_LIST="
1261     cpu_init
1262     cws2fws
1263 "
1264
1265 HWACCEL_LIBRARY_NONFREE_LIST="
1266     cuda
1267     libnpp
1268 "
1269 HWACCEL_LIBRARY_LIST="
1270     $HWACCEL_LIBRARY_NONFREE_LIST
1271     d3d11va
1272     dxva2
1273     libmfx
1274     mmal
1275     nvenc
1276     omx
1277     vaapi
1278     vda
1279     vdpau
1280 "
1281
1282 EXTERNAL_LIBRARY_GPL_LIST="
1283     libcdio
1284     libx264
1285     libx265
1286     libxavs
1287     libxvid
1288 "
1289
1290 EXTERNAL_LIBRARY_NONFREE_LIST="
1291     libfaac
1292     libfdk_aac
1293     openssl
1294 "
1295
1296 EXTERNAL_LIBRARY_VERSION3_LIST="
1297     libopencore_amrnb
1298     libopencore_amrwb
1299     libvo_aacenc
1300     libvo_amrwbenc
1301 "
1302
1303 EXTERNAL_LIBRARY_LIST="
1304     $EXTERNAL_LIBRARY_GPL_LIST
1305     $EXTERNAL_LIBRARY_NONFREE_LIST
1306     $EXTERNAL_LIBRARY_VERSION3_LIST
1307     avisynth
1308     avxsynth
1309     frei0r
1310     gnutls
1311     libbs2b
1312     libdc1394
1313     libdcadec
1314     libfontconfig
1315     libfreetype
1316     libgsm
1317     libhdcd
1318     libilbc
1319     libjack
1320     libkvazaar
1321     libmp3lame
1322     libopencv
1323     libopenh264
1324     libopenjpeg
1325     libopus
1326     libpulse
1327     librtmp
1328     libschroedinger
1329     libsnappy
1330     libspeex
1331     libtheora
1332     libtwolame
1333     libvorbis
1334     libvpx
1335     libwavpack
1336     libwebp
1337     libxcb
1338     libxcb_shm
1339     libxcb_xfixes
1340 "
1341
1342 SYSTEM_LIBRARY_LIST="
1343     bzlib
1344     zlib
1345 "
1346
1347 FEATURE_LIST="
1348     gray
1349     hardcoded_tables
1350     omx_rpi
1351     runtime_cpudetect
1352     safe_bitstream_reader
1353     shared
1354     small
1355     sram
1356     static
1357     swscale_alpha
1358 "
1359
1360 LIBRARY_LIST="
1361     avcodec
1362     avdevice
1363     avfilter
1364     avformat
1365     avresample
1366     avutil
1367     swscale
1368 "
1369
1370 LICENSE_LIST="
1371     gpl
1372     nonfree
1373     version3
1374 "
1375
1376 PROGRAM_LIST="
1377     avconv
1378     avplay
1379     avprobe
1380 "
1381
1382 SUBSYSTEM_LIST="
1383     dct
1384     doc
1385     error_resilience
1386     faan
1387     fft
1388     lsp
1389     lzo
1390     mdct
1391     network
1392     rdft
1393 "
1394
1395 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1396 CONFIG_LIST="
1397     $EXAMPLE_LIST
1398     $EXTERNAL_LIBRARY_LIST
1399     $HWACCEL_LIBRARY_LIST
1400     $FEATURE_LIST
1401     $LICENSE_LIST
1402     $LIBRARY_LIST
1403     $PROGRAM_LIST
1404     $SUBSYSTEM_LIST
1405     $SYSTEM_LIBRARY_LIST
1406     neon_clobber_test
1407     pic
1408     pod2man
1409     texi2html
1410     thumb
1411     valgrind_backtrace
1412     xmm_clobber_test
1413     $COMPONENT_LIST
1414 "
1415
1416 THREADS_LIST="
1417     pthreads
1418     w32threads
1419 "
1420
1421 ATOMICS_LIST="
1422     atomics_gcc
1423     atomics_suncc
1424     atomics_win32
1425 "
1426
1427 ARCH_LIST="
1428     aarch64
1429     alpha
1430     arm
1431     avr32
1432     avr32_ap
1433     avr32_uc
1434     bfin
1435     ia64
1436     m68k
1437     mips
1438     mips64
1439     parisc
1440     ppc
1441     ppc64
1442     s390
1443     sh4
1444     sparc
1445     sparc64
1446     tilegx
1447     tilepro
1448     tomi
1449     x86
1450     x86_32
1451     x86_64
1452 "
1453
1454 ARCH_EXT_LIST_ARM="
1455     armv5te
1456     armv6
1457     armv6t2
1458     armv8
1459     neon
1460     vfp
1461     vfpv3
1462 "
1463
1464 ARCH_EXT_LIST_X86_SIMD="
1465     amd3dnow
1466     amd3dnowext
1467     avx
1468     avx2
1469     fma3
1470     fma4
1471     mmx
1472     mmxext
1473     sse
1474     sse2
1475     sse3
1476     sse4
1477     sse42
1478     ssse3
1479     xop
1480 "
1481
1482 ARCH_EXT_LIST_PPC="
1483     altivec
1484     dcbzl
1485     ldbrx
1486     power8
1487     ppc4xx
1488     vsx
1489 "
1490
1491 ARCH_EXT_LIST_X86="
1492     $ARCH_EXT_LIST_X86_SIMD
1493     cpunop
1494     i686
1495 "
1496
1497 ARCH_EXT_LIST_MIPS="
1498     loongson
1499     mips32r1
1500     mips64r1
1501     mips32r2
1502     mips64r2
1503     mips32r6
1504     mips64r6
1505 "
1506
1507 ARCH_EXT_LIST="
1508     $ARCH_EXT_LIST_ARM
1509     $ARCH_EXT_LIST_MIPS
1510     $ARCH_EXT_LIST_PPC
1511     $ARCH_EXT_LIST_X86
1512     vis
1513 "
1514
1515 ARCH_FEATURES="
1516     aligned_stack
1517     fast_64bit
1518     fast_clz
1519     fast_cmov
1520     local_aligned_8
1521     local_aligned_16
1522     local_aligned_32
1523     simd_align_16
1524     simd_align_32
1525 "
1526
1527 BUILTIN_LIST="
1528     atomic_cas_ptr
1529     machine_rw_barrier
1530     MemoryBarrier
1531     mm_empty
1532     rdtsc
1533     sem_timedwait
1534     sync_val_compare_and_swap
1535 "
1536 HAVE_LIST_CMDLINE="
1537     inline_asm
1538     symver
1539     x86asm
1540 "
1541
1542 HAVE_LIST_PUB="
1543     bigendian
1544     fast_unaligned
1545 "
1546
1547 HEADERS_LIST="
1548     AVFoundation_AVFoundation_h
1549     alsa_asoundlib_h
1550     altivec_h
1551     arpa_inet_h
1552     cdio_paranoia_h
1553     cdio_paranoia_paranoia_h
1554     d3d11_h
1555     dispatch_dispatch_h
1556     dev_bktr_ioctl_bt848_h
1557     dev_bktr_ioctl_meteor_h
1558     dev_ic_bt8xx_h
1559     dev_video_bktr_ioctl_bt848_h
1560     dev_video_meteor_ioctl_meteor_h
1561     direct_h
1562     dlfcn_h
1563     dxva_h
1564     gsm_h
1565     io_h
1566     mach_mach_time_h
1567     machine_ioctl_bt848_h
1568     machine_ioctl_meteor_h
1569     malloc_h
1570     poll_h
1571     sndio_h
1572     soundcard_h
1573     stdatomic_h
1574     sys_mman_h
1575     sys_param_h
1576     sys_resource_h
1577     sys_select_h
1578     sys_soundcard_h
1579     sys_time_h
1580     sys_un_h
1581     sys_videoio_h
1582     unistd_h
1583     valgrind_valgrind_h
1584     windows_h
1585     winsock2_h
1586 "
1587
1588 INTRINSICS_LIST="
1589     intrinsics_neon
1590 "
1591
1592 MATH_FUNCS="
1593     atanf
1594     atan2f
1595     cbrtf
1596     cosf
1597     exp2
1598     exp2f
1599     expf
1600     isinf
1601     isnan
1602     ldexpf
1603     llrint
1604     llrintf
1605     log2
1606     log2f
1607     log10f
1608     lrint
1609     lrintf
1610     powf
1611     rint
1612     round
1613     roundf
1614     sinf
1615     trunc
1616     truncf
1617 "
1618
1619 SYSTEM_FUNCS="
1620     aligned_malloc
1621     clock_gettime
1622     closesocket
1623     CommandLineToArgvW
1624     CoTaskMemFree
1625     CryptGenRandom
1626     fcntl
1627     flt_lim
1628     fork
1629     getaddrinfo
1630     gethrtime
1631     getopt
1632     GetProcessAffinityMask
1633     GetProcessMemoryInfo
1634     GetProcessTimes
1635     getrusage
1636     GetSystemTimeAsFileTime
1637     gettimeofday
1638     gmtime_r
1639     inet_aton
1640     isatty
1641     LoadLibrary
1642     localtime_r
1643     mach_absolute_time
1644     MapViewOfFile
1645     memalign
1646     mkstemp
1647     mmap
1648     mprotect
1649     nanosleep
1650     posix_memalign
1651     sched_getaffinity
1652     SetConsoleTextAttribute
1653     setmode
1654     setrlimit
1655     Sleep
1656     strerror_r
1657     sysconf
1658     sysctl
1659     usleep
1660     VirtualAlloc
1661 "
1662
1663 TOOLCHAIN_FEATURES="
1664     as_dn_directive
1665     as_fpu_directive
1666     as_func
1667     as_object_arch
1668     asm_mod_q
1669     attribute_may_alias
1670     attribute_packed
1671     blocks_extension
1672     ebp_available
1673     ebx_available
1674     gnu_as
1675     ibm_asm
1676     inline_asm_labels
1677     pragma_deprecated
1678     symver_asm_label
1679     symver_gnu_asm
1680     vfp_args
1681     xform_asm
1682     xmm_clobbers
1683 "
1684
1685 TYPES_LIST="
1686     CONDITION_VARIABLE_Ptr
1687     socklen_t
1688     struct_addrinfo
1689     struct_group_source_req
1690     struct_ip_mreq_source
1691     struct_ipv6_mreq
1692     struct_pollfd
1693     struct_rusage_ru_maxrss
1694     struct_sockaddr_in6
1695     struct_sockaddr_sa_len
1696     struct_sockaddr_storage
1697     struct_v4l2_frmivalenum_discrete
1698 "
1699
1700 HAVE_LIST="
1701     $ARCH_EXT_LIST
1702     $(add_suffix _external $ARCH_EXT_LIST)
1703     $(add_suffix _inline   $ARCH_EXT_LIST)
1704     $ARCH_FEATURES
1705     $BUILTIN_LIST
1706     $HAVE_LIST_CMDLINE
1707     $HAVE_LIST_PUB
1708     $HEADERS_LIST
1709     $INTRINSICS_LIST
1710     $MATH_FUNCS
1711     $SYSTEM_FUNCS
1712     $THREADS_LIST
1713     $TOOLCHAIN_FEATURES
1714     $TYPES_LIST
1715     dos_paths
1716     dxva2_lib
1717     libc_msvcrt
1718     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1719     sdl
1720     section_data_rel_ro
1721     threads
1722     vaapi_drm
1723     vaapi_x11
1724     vdpau_x11
1725 "
1726
1727 # options emitted with CONFIG_ prefix but not available on the command line
1728 CONFIG_EXTRA="
1729     aandcttables
1730     ac3dsp
1731     audio_frame_queue
1732     audiodsp
1733     blockdsp
1734     bswapdsp
1735     cabac
1736     dirac_parse
1737     dvprofile
1738     faandct
1739     faanidct
1740     fdctdsp
1741     flacdsp
1742     fmtconvert
1743     g722dsp
1744     gmp
1745     golomb
1746     gplv3
1747     h263dsp
1748     h264chroma
1749     h264dsp
1750     h264parse
1751     h264pred
1752     h264qpel
1753     hevc_ps
1754     hpeldsp
1755     huffman
1756     huffyuvdsp
1757     huffyuvencdsp
1758     idctdsp
1759     iirfilter
1760     imdct15
1761     intrax8
1762     iso_media
1763     ividsp
1764     jpegtables
1765     lgplv3
1766     libx262
1767     libxcb_shape
1768     lpc
1769     lzf
1770     me_cmp
1771     mpeg_er
1772     mpegaudio
1773     mpegaudiodsp
1774     mpegaudioheader
1775     mpegvideo
1776     mpegvideoenc
1777     mss34dsp
1778     pixblockdsp
1779     qpeldsp
1780     qsv
1781     qsvdec
1782     qsvenc
1783     rangecoder
1784     riffdec
1785     riffenc
1786     rtpdec
1787     rtpenc_chain
1788     rv34dsp
1789     sinewin
1790     snappy
1791     srtp
1792     startcode
1793     texturedsp
1794     texturedspenc
1795     tpeldsp
1796     vaapi_encode
1797     vc1dsp
1798     videodsp
1799     vp3dsp
1800     vp56dsp
1801     vp8dsp
1802     wma_freqs
1803     wmv2dsp
1804 "
1805
1806 CMDLINE_SELECT="
1807     $ARCH_EXT_LIST
1808     $CONFIG_LIST
1809     $HAVE_LIST_CMDLINE
1810     $THREADS_LIST
1811     asm
1812     cross_compile
1813     debug
1814     extra_warnings
1815     logging
1816     lto
1817     optimizations
1818     rpath
1819 "
1820
1821 PATHS_LIST="
1822     bindir
1823     datadir
1824     docdir
1825     incdir
1826     libdir
1827     mandir
1828     prefix
1829     shlibdir
1830 "
1831
1832 CMDLINE_SET="
1833     $PATHS_LIST
1834     ar
1835     arch
1836     as
1837     cc
1838     objcc
1839     cpu
1840     cross_prefix
1841     custom_allocator
1842     dep_cc
1843     env
1844     extra_version
1845     host_cc
1846     host_cflags
1847     host_extralibs
1848     host_ld
1849     host_ldflags
1850     host_os
1851     ignore_tests
1852     ld
1853     logfile
1854     malloc_prefix
1855     nm
1856     optflags
1857     pkg_config
1858     pkg_config_flags
1859     random_seed
1860     samples
1861     sysinclude
1862     sysroot
1863     target_exec
1864     target_os
1865     target_path
1866     target_samples
1867     toolchain
1868     x86asmexe
1869 "
1870
1871 CMDLINE_APPEND="
1872     extra_cflags
1873     extra_objcflags
1874     host_cppflags
1875 "
1876
1877 # code dependency declarations
1878
1879 # architecture extensions
1880
1881 armv5te_deps="arm"
1882 armv6_deps="arm"
1883 armv6t2_deps="arm"
1884 armv8_deps="aarch64"
1885 neon_deps_any="aarch64 arm"
1886 intrinsics_neon_deps="neon"
1887 vfp_deps_any="aarch64 arm"
1888 vfpv3_deps="vfp"
1889
1890 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1891
1892 altivec_deps="ppc"
1893 ppc4xx_deps="ppc"
1894 vsx_deps="altivec"
1895 power8_deps="vsx"
1896
1897 cpunop_deps="i686"
1898 x86_64_select="i686"
1899 x86_64_suggest="fast_cmov"
1900
1901 amd3dnow_deps="mmx"
1902 amd3dnowext_deps="amd3dnow"
1903 i686_deps="x86"
1904 mmx_deps="x86"
1905 mmxext_deps="mmx"
1906 sse_deps="mmxext"
1907 sse2_deps="sse"
1908 sse3_deps="sse2"
1909 ssse3_deps="sse3"
1910 sse4_deps="ssse3"
1911 sse42_deps="sse4"
1912 avx_deps="sse42"
1913 xop_deps="avx"
1914 fma3_deps="avx"
1915 fma4_deps="avx"
1916 avx2_deps="avx"
1917
1918 mmx_external_deps="x86asm"
1919 mmx_inline_deps="inline_asm"
1920 mmx_suggest="mmx_external mmx_inline"
1921
1922 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1923     eval dep=\$${ext}_deps
1924     eval ${ext}_external_deps='"${dep}_external"'
1925     eval ${ext}_inline_deps='"${dep}_inline"'
1926     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1927 done
1928
1929 aligned_stack_if_any="aarch64 ppc x86"
1930 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1931 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1932 fast_unaligned_if_any="aarch64 ppc x86"
1933 simd_align_16_if_any="altivec neon sse"
1934 simd_align_32_if_any="avx"
1935
1936 # system capabilities
1937 symver_if_any="symver_asm_label symver_gnu_asm"
1938 valgrind_backtrace_conflict="optimizations"
1939 valgrind_backtrace_deps="valgrind_valgrind_h"
1940
1941 # threading support
1942 atomics_gcc_if="sync_val_compare_and_swap"
1943 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1944 atomics_win32_if="MemoryBarrier"
1945 atomics_native_if_any="$ATOMICS_LIST"
1946 w32threads_deps="atomics_native"
1947 threads_if_any="$THREADS_LIST"
1948
1949 # subsystems
1950 dct_select="rdft"
1951 dirac_parse_select="golomb"
1952 error_resilience_select="me_cmp"
1953 faandct_deps="faan fdctdsp"
1954 faanidct_deps="faan idctdsp"
1955 h264dsp_select="startcode"
1956 hevc_ps_select="golomb"
1957 intrax8_select="blockdsp idctdsp"
1958 mdct_select="fft"
1959 rdft_select="fft"
1960 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1961 mpeg_er_select="error_resilience"
1962 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1963 mpegaudiodsp_select="dct"
1964 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1965 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1966 vc1dsp_select="h264chroma qpeldsp startcode"
1967
1968 # decoders / encoders
1969 aac_decoder_select="imdct15 mdct sinewin"
1970 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1971 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1972 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1973 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1974 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1975 adpcm_g722_decoder_select="g722dsp"
1976 adpcm_g722_encoder_select="g722dsp"
1977 aic_decoder_select="golomb idctdsp"
1978 alac_encoder_select="lpc"
1979 als_decoder_select="bswapdsp"
1980 amrnb_decoder_select="lsp"
1981 amrwb_decoder_select="lsp"
1982 amv_decoder_select="sp5x_decoder"
1983 ape_decoder_select="bswapdsp"
1984 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1985 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1986 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1987 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1988 atrac1_decoder_select="mdct sinewin"
1989 atrac3_decoder_select="mdct"
1990 atrac3p_decoder_select="mdct sinewin"
1991 bink_decoder_select="blockdsp hpeldsp"
1992 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1993 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1994 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1995 cllc_decoder_select="bswapdsp"
1996 comfortnoise_encoder_select="lpc"
1997 cook_decoder_select="audiodsp mdct sinewin"
1998 cscd_decoder_select="lzo"
1999 cscd_decoder_suggest="zlib"
2000 dca_decoder_select="fmtconvert mdct"
2001 dds_decoder_select="texturedsp"
2002 dnxhd_decoder_select="blockdsp idctdsp"
2003 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2004 dvvideo_decoder_select="dvprofile idctdsp"
2005 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2006 dxa_decoder_deps="zlib"
2007 dxv_decoder_select="lzf texturedsp"
2008 eac3_decoder_select="ac3_decoder"
2009 eac3_encoder_select="ac3_encoder"
2010 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2011 eatgq_decoder_select="aandcttables idctdsp"
2012 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2013 exr_decoder_deps="zlib"
2014 ffv1_decoder_select="rangecoder"
2015 ffv1_encoder_select="rangecoder"
2016 ffvhuff_decoder_select="huffyuv_decoder"
2017 ffvhuff_encoder_select="huffyuv_encoder"
2018 fic_decoder_select="golomb"
2019 flac_decoder_select="flacdsp"
2020 flac_encoder_select="bswapdsp flacdsp lpc"
2021 flashsv_decoder_deps="zlib"
2022 flashsv_encoder_deps="zlib"
2023 flashsv2_decoder_deps="zlib"
2024 flv_decoder_select="h263_decoder"
2025 flv_encoder_select="h263_encoder"
2026 fourxm_decoder_select="blockdsp bswapdsp"
2027 fraps_decoder_select="bswapdsp huffman"
2028 g2m_decoder_deps="zlib"
2029 g2m_decoder_select="blockdsp idctdsp jpegtables"
2030 h261_decoder_select="mpeg_er mpegvideo"
2031 h261_encoder_select="aandcttables mpegvideoenc"
2032 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2033 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2034 h263i_decoder_select="h263_decoder"
2035 h263p_encoder_select="h263_encoder"
2036 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2037 h264_decoder_suggest="error_resilience"
2038 hap_decoder_select="snappy texturedsp"
2039 hap_encoder_deps="libsnappy"
2040 hap_encoder_select="texturedspenc"
2041 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2042 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2043 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2044 iac_decoder_select="imc_decoder"
2045 imc_decoder_select="bswapdsp fft mdct sinewin"
2046 indeo3_decoder_select="hpeldsp"
2047 indeo4_decoder_select="ividsp"
2048 indeo5_decoder_select="ividsp"
2049 interplay_video_decoder_select="hpeldsp"
2050 jpegls_decoder_select="mjpeg_decoder"
2051 jv_decoder_select="blockdsp"
2052 lagarith_decoder_select="huffyuvdsp"
2053 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2054 magicyuv_decoder_select="huffyuvdsp"
2055 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2056 metasound_decoder_select="lsp mdct sinewin"
2057 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2058 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2059 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2060 mjpegb_decoder_select="mjpeg_decoder"
2061 mlp_decoder_select="mlp_parser"
2062 motionpixels_decoder_select="bswapdsp"
2063 mp1_decoder_select="mpegaudio"
2064 mp1float_decoder_select="mpegaudio"
2065 mp2_decoder_select="mpegaudio"
2066 mp2float_decoder_select="mpegaudio"
2067 mp3_decoder_select="mpegaudio"
2068 mp3adu_decoder_select="mpegaudio"
2069 mp3adufloat_decoder_select="mpegaudio"
2070 mp3float_decoder_select="mpegaudio"
2071 mp3on4_decoder_select="mpegaudio"
2072 mp3on4float_decoder_select="mpegaudio"
2073 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2074 mpc8_decoder_select="mpegaudiodsp"
2075 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2076 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2077 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2078 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2079 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2080 mpeg4_encoder_select="h263_encoder"
2081 msa1_decoder_select="mss34dsp"
2082 msmpeg4v1_decoder_select="h263_decoder"
2083 msmpeg4v2_decoder_select="h263_decoder"
2084 msmpeg4v2_encoder_select="h263_encoder"
2085 msmpeg4v3_decoder_select="h263_decoder"
2086 msmpeg4v3_encoder_select="h263_encoder"
2087 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2088 mts2_decoder_select="mss34dsp"
2089 mxpeg_decoder_select="mjpeg_decoder"
2090 nellymoser_decoder_select="mdct sinewin"
2091 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2092 nuv_decoder_select="idctdsp lzo"
2093 on2avc_decoder_select="mdct"
2094 opus_decoder_deps="avresample"
2095 opus_decoder_select="imdct15"
2096 png_decoder_deps="zlib"
2097 png_encoder_deps="zlib"
2098 png_encoder_select="huffyuvencdsp"
2099 prores_decoder_select="idctdsp"
2100 prores_encoder_select="fdctdsp"
2101 qcelp_decoder_select="lsp"
2102 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2103 ra_144_encoder_select="audio_frame_queue lpc"
2104 ralf_decoder_select="golomb"
2105 rscc_decoder_deps="zlib"
2106 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2107 rv10_encoder_select="h263_encoder"
2108 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2109 rv20_encoder_select="h263_encoder"
2110 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2111 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2112 screenpresso_decoder_deps="zlib"
2113 sipr_decoder_select="lsp"
2114 sp5x_decoder_select="mjpeg_decoder"
2115 svq1_decoder_select="hpeldsp"
2116 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2117 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2118 svq3_decoder_suggest="zlib"
2119 tak_decoder_select="audiodsp"
2120 tdsc_decoder_deps="zlib"
2121 tdsc_decoder_select="mjpeg_decoder"
2122 theora_decoder_select="vp3_decoder"
2123 thp_decoder_select="mjpeg_decoder"
2124 tiff_decoder_suggest="zlib"
2125 tiff_encoder_suggest="zlib"
2126 truehd_decoder_select="mlp_decoder"
2127 truemotion2_decoder_select="bswapdsp"
2128 truespeech_decoder_select="bswapdsp"
2129 tscc_decoder_deps="zlib"
2130 txd_decoder_select="texturedsp"
2131 twinvq_decoder_select="mdct lsp sinewin"
2132 utvideo_decoder_select="bswapdsp"
2133 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2134 vble_decoder_select="huffyuvdsp"
2135 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2136 vc1image_decoder_select="vc1_decoder"
2137 vorbis_decoder_select="mdct"
2138 vorbis_encoder_select="mdct"
2139 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2140 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2141 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2142 vp6a_decoder_select="vp6_decoder"
2143 vp6f_decoder_select="vp6_decoder"
2144 vp7_decoder_select="h264pred videodsp vp8dsp"
2145 vp8_decoder_select="h264pred videodsp vp8dsp"
2146 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2147 webp_decoder_select="vp8_decoder"
2148 wmapro_decoder_select="mdct sinewin wma_freqs"
2149 wmav1_decoder_select="mdct sinewin wma_freqs"
2150 wmav1_encoder_select="mdct sinewin wma_freqs"
2151 wmav2_decoder_select="mdct sinewin wma_freqs"
2152 wmav2_encoder_select="mdct sinewin wma_freqs"
2153 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2154 wmv1_decoder_select="h263_decoder"
2155 wmv1_encoder_select="h263_encoder"
2156 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2157 wmv2_encoder_select="h263_encoder wmv2dsp"
2158 wmv3_decoder_select="vc1_decoder"
2159 wmv3image_decoder_select="wmv3_decoder"
2160 zerocodec_decoder_deps="zlib"
2161 zlib_decoder_deps="zlib"
2162 zlib_encoder_deps="zlib"
2163 zmbv_decoder_deps="zlib"
2164 zmbv_encoder_deps="zlib"
2165
2166 # hardware accelerators
2167 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2168 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2169 dxva2_lib_deps="dxva2"
2170 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2171 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2172
2173 h263_vaapi_hwaccel_deps="vaapi"
2174 h263_vaapi_hwaccel_select="h263_decoder"
2175 h264_d3d11va_hwaccel_deps="d3d11va"
2176 h264_d3d11va_hwaccel_select="h264_decoder"
2177 h264_dxva2_hwaccel_deps="dxva2"
2178 h264_dxva2_hwaccel_select="h264_decoder"
2179 h264_mmal_hwaccel_deps="mmal"
2180 h264_qsv_hwaccel_deps="libmfx"
2181 h264_vaapi_hwaccel_deps="vaapi"
2182 h264_vaapi_hwaccel_select="h264_decoder"
2183 h264_vda_hwaccel_deps="vda"
2184 h264_vda_hwaccel_select="h264_decoder"
2185 h264_vda_old_hwaccel_deps="vda"
2186 h264_vda_old_hwaccel_select="h264_decoder"
2187 h264_vdpau_hwaccel_deps="vdpau"
2188 h264_vdpau_hwaccel_select="h264_decoder"
2189 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2190 hevc_d3d11va_hwaccel_select="hevc_decoder"
2191 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2192 hevc_dxva2_hwaccel_select="hevc_decoder"
2193 hevc_qsv_hwaccel_deps="libmfx"
2194 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2195 hevc_vaapi_hwaccel_select="hevc_decoder"
2196 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2197 hevc_vdpau_hwaccel_select="hevc_decoder"
2198 mpeg1_vdpau_hwaccel_deps="vdpau"
2199 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2200 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2201 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2202 mpeg2_dxva2_hwaccel_deps="dxva2"
2203 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2204 mpeg2_mmal_hwaccel_deps="mmal"
2205 mpeg2_qsv_hwaccel_deps="libmfx"
2206 mpeg2_vaapi_hwaccel_deps="vaapi"
2207 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2208 mpeg2_vdpau_hwaccel_deps="vdpau"
2209 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2210 mpeg4_vaapi_hwaccel_deps="vaapi"
2211 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2212 mpeg4_vdpau_hwaccel_deps="vdpau"
2213 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2214 vc1_d3d11va_hwaccel_deps="d3d11va"
2215 vc1_d3d11va_hwaccel_select="vc1_decoder"
2216 vc1_dxva2_hwaccel_deps="dxva2"
2217 vc1_dxva2_hwaccel_select="vc1_decoder"
2218 vc1_mmal_hwaccel_deps="mmal"
2219 vc1_qsv_hwaccel_deps="libmfx"
2220 vc1_vaapi_hwaccel_deps="vaapi"
2221 vc1_vaapi_hwaccel_select="vc1_decoder"
2222 vc1_vdpau_hwaccel_deps="vdpau"
2223 vc1_vdpau_hwaccel_select="vc1_decoder"
2224 vp8_qsv_hwaccel_deps="libmfx"
2225 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2226 vp8_vaapi_hwaccel_select="vp8_decoder"
2227 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2228 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2229 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2230 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2231
2232 # hardware-accelerated codecs
2233 nvenc_deps_any="libdl LoadLibrary"
2234 omx_deps="libdl pthreads"
2235 omx_rpi_select="omx"
2236 qsvdec_select="qsv"
2237 qsvenc_select="qsv"
2238 vaapi_encode_deps="vaapi"
2239
2240 hwupload_cuda_filter_deps="cuda"
2241 scale_npp_filter_deps="cuda libnpp"
2242
2243 h264_mmal_decoder_deps="mmal"
2244 h264_nvenc_encoder_deps="nvenc"
2245 h264_omx_encoder_deps="omx"
2246 h264_qsv_decoder_deps="libmfx"
2247 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2248 h264_qsv_encoder_deps="libmfx"
2249 h264_qsv_encoder_select="qsvenc"
2250 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2251 h264_vaapi_encoder_select="vaapi_encode golomb"
2252 hevc_nvenc_encoder_deps="nvenc"
2253 hevc_qsv_decoder_deps="libmfx"
2254 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2255 hevc_qsv_encoder_deps="libmfx"
2256 hevc_qsv_encoder_select="hevc_ps qsvenc"
2257 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2258 hevc_vaapi_encoder_select="vaapi_encode golomb"
2259 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2260 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2261 mpeg2_mmal_decoder_deps="mmal"
2262 mpeg2_qsv_decoder_deps="libmfx"
2263 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2264 mpeg2_qsv_encoder_deps="libmfx"
2265 mpeg2_qsv_encoder_select="qsvenc"
2266 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2267 mpeg2_vaapi_encoder_select="vaapi_encode"
2268 mpeg4_omx_encoder_deps="omx"
2269 vc1_mmal_decoder_deps="mmal"
2270 vc1_qsv_decoder_deps="libmfx"
2271 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2272 vp8_qsv_decoder_deps="libmfx"
2273 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2274 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2275 vp8_vaapi_encoder_select="vaapi_encode"
2276
2277 nvenc_h264_encoder_select="h264_nvenc_encoder"
2278 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2279
2280 # parsers
2281 h264_parser_select="golomb h264dsp h264parse"
2282 hevc_parser_select="hevc_ps"
2283 mpegaudio_parser_select="mpegaudioheader"
2284 mpegvideo_parser_select="mpegvideo"
2285 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2286 vc1_parser_select="vc1dsp"
2287
2288 # bitstream_filters
2289 mjpeg2jpeg_bsf_select="jpegtables"
2290
2291 # external libraries
2292 avisynth_deps="LoadLibrary"
2293 avxsynth_deps="libdl"
2294 avisynth_demuxer_deps_any="avisynth avxsynth"
2295 avisynth_demuxer_select="riffdec"
2296 libdcadec_decoder_deps="libdcadec"
2297 libfaac_encoder_deps="libfaac"
2298 libfaac_encoder_select="audio_frame_queue"
2299 libfdk_aac_decoder_deps="libfdk_aac"
2300 libfdk_aac_encoder_deps="libfdk_aac"
2301 libfdk_aac_encoder_select="audio_frame_queue"
2302 libgsm_decoder_deps="libgsm"
2303 libgsm_encoder_deps="libgsm"
2304 libgsm_ms_decoder_deps="libgsm"
2305 libgsm_ms_encoder_deps="libgsm"
2306 libilbc_decoder_deps="libilbc"
2307 libilbc_encoder_deps="libilbc"
2308 libkvazaar_encoder_deps="libkvazaar"
2309 libmp3lame_encoder_deps="libmp3lame"
2310 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2311 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2312 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2313 libopencore_amrnb_encoder_select="audio_frame_queue"
2314 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2315 libopenh264_decoder_deps="libopenh264"
2316 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2317 libopenh264_encoder_deps="libopenh264"
2318 libopenjpeg_decoder_deps="libopenjpeg"
2319 libopenjpeg_encoder_deps="libopenjpeg"
2320 libopus_decoder_deps="libopus"
2321 libopus_encoder_deps="libopus"
2322 libopus_encoder_select="audio_frame_queue"
2323 libschroedinger_decoder_deps="libschroedinger"
2324 libschroedinger_encoder_deps="libschroedinger"
2325 libspeex_decoder_deps="libspeex"
2326 libspeex_encoder_deps="libspeex"
2327 libspeex_encoder_select="audio_frame_queue"
2328 libtheora_encoder_deps="libtheora"
2329 libtwolame_encoder_deps="libtwolame"
2330 libvo_aacenc_encoder_deps="libvo_aacenc"
2331 libvo_aacenc_encoder_select="audio_frame_queue"
2332 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2333 libvorbis_encoder_deps="libvorbis"
2334 libvorbis_encoder_select="audio_frame_queue"
2335 libvpx_vp8_decoder_deps="libvpx"
2336 libvpx_vp8_encoder_deps="libvpx"
2337 libvpx_vp9_decoder_deps="libvpx"
2338 libvpx_vp9_encoder_deps="libvpx"
2339 libwavpack_encoder_deps="libwavpack"
2340 libwavpack_encoder_select="audio_frame_queue"
2341 libwebp_encoder_deps="libwebp"
2342 libx262_encoder_deps="libx262"
2343 libx264_encoder_deps="libx264"
2344 libx265_encoder_deps="libx265"
2345 libxavs_encoder_deps="libxavs"
2346 libxvid_encoder_deps="libxvid mkstemp"
2347
2348 # demuxers / muxers
2349 ac3_demuxer_select="ac3_parser"
2350 asf_demuxer_select="riffdec"
2351 asf_muxer_select="riffenc"
2352 asf_stream_muxer_select="asf_muxer"
2353 avi_demuxer_select="iso_media riffdec"
2354 avi_muxer_select="riffenc"
2355 caf_demuxer_select="iso_media riffdec"
2356 dash_muxer_select="mp4_muxer"
2357 dirac_demuxer_select="dirac_parser"
2358 dv_demuxer_select="dvprofile"
2359 dv_muxer_select="dvprofile"
2360 dxa_demuxer_select="riffdec"
2361 eac3_demuxer_select="ac3_parser"
2362 f4v_muxer_select="mov_muxer"
2363 flac_demuxer_select="flac_parser"
2364 hds_muxer_select="flv_muxer"
2365 hls_muxer_select="mpegts_muxer"
2366 ipod_muxer_select="mov_muxer"
2367 ismv_muxer_select="mov_muxer"
2368 matroska_audio_muxer_select="matroska_muxer"
2369 matroska_demuxer_select="iso_media riffdec"
2370 matroska_demuxer_suggest="bzlib lzo zlib"
2371 matroska_muxer_select="iso_media riffenc"
2372 mmf_muxer_select="riffenc"
2373 mov_demuxer_select="iso_media riffdec"
2374 mov_demuxer_suggest="zlib"
2375 mov_muxer_select="iso_media riffenc rtpenc_chain"
2376 mp3_demuxer_select="mpegaudio_parser"
2377 mp3_muxer_select="mpegaudioheader"
2378 mp4_muxer_select="mov_muxer"
2379 mpegts_demuxer_select="iso_media"
2380 mpegts_muxer_select="adts_muxer latm_muxer"
2381 mpegtsraw_demuxer_select="mpegts_demuxer"
2382 mxf_d10_muxer_select="mxf_muxer"
2383 nut_muxer_select="riffenc"
2384 nuv_demuxer_select="riffdec"
2385 oga_muxer_select="ogg_muxer"
2386 ogg_demuxer_select="dirac_parse"
2387 opus_muxer_select="ogg_muxer"
2388 psp_muxer_select="mov_muxer"
2389 rtp_demuxer_select="sdp_demuxer"
2390 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2391 rtsp_demuxer_select="http_protocol rtpdec"
2392 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2393 sap_demuxer_select="sdp_demuxer"
2394 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2395 sdp_demuxer_select="rtpdec"
2396 smoothstreaming_muxer_select="ismv_muxer"
2397 spdif_muxer_select="aac_parser"
2398 spx_muxer_select="ogg_muxer"
2399 swf_demuxer_suggest="zlib"
2400 tak_demuxer_select="tak_parser"
2401 tg2_muxer_select="mov_muxer"
2402 tgp_muxer_select="mov_muxer"
2403 w64_demuxer_select="wav_demuxer"
2404 wav_demuxer_select="riffdec"
2405 wav_muxer_select="riffenc"
2406 webm_muxer_select="iso_media riffenc"
2407 wtv_demuxer_select="mpegts_demuxer riffdec"
2408 xmv_demuxer_select="riffdec"
2409 xwma_demuxer_select="riffdec"
2410
2411 # indevs / outdevs
2412 alsa_indev_deps="alsa"
2413 alsa_outdev_deps="alsa"
2414 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2415 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2416 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2417 dv1394_indev_deps="dv1394"
2418 dv1394_indev_select="dv_demuxer"
2419 fbdev_indev_deps="linux_fb_h"
2420 jack_indev_deps="libjack"
2421 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2422 libcdio_indev_deps="libcdio"
2423 libdc1394_indev_deps="libdc1394"
2424 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2425 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2426 pulse_indev_deps="libpulse"
2427 sndio_indev_deps="sndio"
2428 sndio_outdev_deps="sndio"
2429 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2430 vfwcap_indev_deps="vfw32 vfwcap_defines"
2431 xcbgrab_indev_deps="libxcb libxcb_shape"
2432 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2433
2434 # protocols
2435 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2436 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2437 ffrtmpcrypt_protocol_select="tcp_protocol"
2438 ffrtmphttp_protocol_conflict="librtmp_protocol"
2439 ffrtmphttp_protocol_select="http_protocol"
2440 gopher_protocol_select="network"
2441 http_protocol_select="tcp_protocol"
2442 httpproxy_protocol_select="tcp_protocol"
2443 https_protocol_select="tls_protocol"
2444 icecast_protocol_select="http_protocol"
2445 librtmp_protocol_deps="librtmp"
2446 librtmpe_protocol_deps="librtmp"
2447 librtmps_protocol_deps="librtmp"
2448 librtmpt_protocol_deps="librtmp"
2449 librtmpte_protocol_deps="librtmp"
2450 mmsh_protocol_select="http_protocol"
2451 mmst_protocol_select="network"
2452 rtmp_protocol_conflict="librtmp_protocol"
2453 rtmp_protocol_select="tcp_protocol"
2454 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2455 rtmps_protocol_conflict="librtmp_protocol"
2456 rtmps_protocol_select="tls_protocol"
2457 rtmpt_protocol_select="ffrtmphttp_protocol"
2458 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2459 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2460 rtp_protocol_select="udp_protocol"
2461 sctp_protocol_deps="struct_sctp_event_subscribe"
2462 sctp_protocol_select="network"
2463 srtp_protocol_select="rtp_protocol srtp"
2464 tcp_protocol_select="network"
2465 tls_gnutls_protocol_deps="gnutls"
2466 tls_gnutls_protocol_select="tcp_protocol"
2467 tls_openssl_protocol_conflict="tls_gnutls_protocol"
2468 tls_openssl_protocol_deps="openssl"
2469 tls_openssl_protocol_select="tcp_protocol"
2470 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2471 udp_protocol_select="network"
2472 unix_protocol_deps="sys_un_h"
2473 unix_protocol_select="network"
2474
2475 # filters
2476 asyncts_filter_deps="avresample"
2477 blackframe_filter_deps="gpl"
2478 boxblur_filter_deps="gpl"
2479 bs2b_filter_deps="libbs2b"
2480 cropdetect_filter_deps="gpl"
2481 deinterlace_qsv_filter_deps="libmfx"
2482 deinterlace_vaapi_filter_deps="vaapi"
2483 delogo_filter_deps="gpl"
2484 drawtext_filter_deps="libfreetype"
2485 drawtext_filter_suggest="libfontconfig"
2486 frei0r_filter_deps="frei0r libdl"
2487 frei0r_src_filter_deps="frei0r libdl"
2488 hdcd_filter_deps="libhdcd"
2489 hqdn3d_filter_deps="gpl"
2490 interlace_filter_deps="gpl"
2491 movie_filter_deps="avcodec avformat"
2492 ocv_filter_deps="libopencv"
2493 resample_filter_deps="avresample"
2494 scale_filter_deps="swscale"
2495 scale_qsv_filter_deps="libmfx"
2496 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2497
2498 # examples
2499 decode_audio_example_deps="avcodec avutil"
2500 decode_video_example_deps="avcodec avutil"
2501 encode_audio_example_deps="avcodec avutil"
2502 encode_video_example_deps="avcodec avutil"
2503 filter_audio_example_deps="avfilter avutil"
2504 metadata_example_deps="avformat avutil"
2505 output_example_deps="avcodec avformat avresample avutil swscale"
2506 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2507 transcode_aac_example_deps="avcodec avformat avresample"
2508
2509 # EXTRALIBS_LIST
2510 cpu_init_extralibs="pthreads_extralibs"
2511 cws2fws_extralibs="zlib_extralibs"
2512
2513 # libraries, in linking order
2514 avcodec_deps="avutil"
2515 avcodec_select="null_bsf"
2516 avdevice_deps="avformat avcodec avutil"
2517 avfilter_deps="avutil"
2518 avformat_deps="avcodec avutil"
2519 avformat_suggest="network"
2520 avresample_deps="avutil"
2521 swscale_deps="avutil"
2522
2523 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2524 avdevice_extralibs="libm_extralibs"
2525 avformat_extralibs="libm_extralibs"
2526 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2527 avresample_extralibs="libm_extralibs"
2528 avutil_extralibs="clock_gettime_extralibs cuda_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2529 swscale_extralibs="libm_extralibs"
2530
2531 # programs
2532 avconv_deps="avcodec avfilter avformat avresample swscale"
2533 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2534                fps_filter null_filter resample_filter scale_filter
2535                trim_filter"
2536 avconv_suggest="dxva2_lib ole32 psapi shell32"
2537 avplay_deps="avcodec avfilter avformat avresample sdl"
2538 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2539 avplay_suggest="shell32"
2540 avprobe_deps="avcodec avformat"
2541 avprobe_suggest="shell32"
2542
2543 # documentation
2544 pod2man_deps="doc"
2545 texi2html_deps="doc"
2546
2547 # default parameters
2548
2549 logfile="avbuild/config.log"
2550
2551 # installation paths
2552 prefix_default="/usr/local"
2553 bindir_default='${prefix}/bin'
2554 datadir_default='${prefix}/share/avconv'
2555 docdir_default='${prefix}/share/doc/libav'
2556 incdir_default='${prefix}/include'
2557 libdir_default='${prefix}/lib'
2558 mandir_default='${prefix}/share/man'
2559 shlibdir_default="$libdir_default"
2560
2561 # toolchain
2562 ar_default="ar"
2563 cc_default="gcc"
2564 host_cc_default="gcc"
2565 x86asmexe_default="nasm"
2566 ln_s="ln -s -f"
2567 nm_default="nm -g"
2568 pkg_config_default=pkg-config
2569 ranlib="ranlib"
2570 strip="strip"
2571 version_script='--version-script'
2572
2573 # machine
2574 arch_default=$(uname -m)
2575 cpu="generic"
2576 intrinsics="none"
2577
2578 # OS
2579 target_os_default=$(tolower $(uname -s))
2580 host_os=$target_os_default
2581
2582 # configurable options
2583 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2584
2585 enable asm
2586 enable debug
2587 enable doc
2588 enable faan faandct faanidct
2589 enable optimizations
2590 enable safe_bitstream_reader
2591 enable static
2592 enable swscale_alpha
2593 enable valgrind_backtrace
2594
2595 # By default, enable only those hwaccels that have no external dependencies.
2596 enable d3d11va dxva2 vda vdpau
2597
2598 # internal components are enabled by default
2599 enable $EXTRALIBS_LIST
2600
2601 # Avoid external, non-system, libraries getting enabled by dependency resolution
2602 disable $EXTERNAL_LIBRARY_LIST
2603
2604 # build settings
2605 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2606 LIBPREF="lib"
2607 LIBSUF=".a"
2608 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2609 SLIBPREF="lib"
2610 SLIBSUF=".so"
2611 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2612 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2613 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2614 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2615 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2616 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2617 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2618
2619 asflags_filter=echo
2620 cflags_filter=echo
2621 ldflags_filter=echo
2622
2623 AS_C='-c'
2624 AS_O='-o $@'
2625 CC_C='-c'
2626 CC_E='-E -o $@'
2627 CC_O='-o $@'
2628 OBJCC_C='-c'
2629 OBJCC_E='-E -o $@'
2630 OBJCC_O='-o $@'
2631 X86ASM_O='-o $@'
2632 LD_O='-o $@'
2633 LD_LIB='-l%'
2634 LD_PATH='-L'
2635 HOSTCC_C='-c'
2636 HOSTCC_E='-E -o $@'
2637 HOSTCC_O='-o $@'
2638 HOSTLD_O='-o $@'
2639
2640 host_extralibs='-lm'
2641 host_cflags_filter=echo
2642 host_ldflags_filter=echo
2643
2644 target_path='$(CURDIR)'
2645
2646 # since the object filename is not given with the -MM flag, the compiler
2647 # is only able to print the basename, and we must add the path ourselves
2648 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2649 DEPFLAGS='-MM'
2650
2651 mkdir -p avbuild
2652
2653 # find source path
2654 if test -f configure; then
2655     source_path=.
2656 else
2657     source_path=$(cd $(dirname "$0"); pwd)
2658     echo "$source_path" | grep -q '[[:blank:]]' &&
2659         die "Out of tree builds are impossible with whitespace in source path."
2660     test -e "$source_path/config.h" &&
2661         die "Out of tree builds are impossible with config.h in source dir."
2662 fi
2663
2664 for v in "$@"; do
2665     r=${v#*=}
2666     l=${v%"$r"}
2667     r=$(sh_quote "$r")
2668     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2669 done
2670
2671 find_things(){
2672     thing=$1
2673     pattern=$2
2674     file=$source_path/$3
2675     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2676 }
2677
2678 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2679 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2680 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2681 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2682 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2683 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2684 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2685 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2686 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2687
2688 find_things_extern(){
2689     thing=$1
2690     pattern=$2
2691     file=$source_path/$3
2692     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2693 }
2694
2695 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2696 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2697
2698 AVCODEC_COMPONENTS_LIST="
2699     $BSF_LIST
2700     $DECODER_LIST
2701     $ENCODER_LIST
2702     $HWACCEL_LIST
2703     $PARSER_LIST
2704 "
2705
2706 AVDEVICE_COMPONENTS_LIST="
2707     $INDEV_LIST
2708     $OUTDEV_LIST
2709 "
2710
2711 AVFILTER_COMPONENTS_LIST="
2712     $FILTER_LIST
2713 "
2714
2715 AVFORMAT_COMPONENTS_LIST="
2716     $DEMUXER_LIST
2717     $MUXER_LIST
2718     $PROTOCOL_LIST
2719 "
2720
2721 ALL_COMPONENTS="
2722     $AVCODEC_COMPONENTS_LIST
2723     $AVDEVICE_COMPONENTS_LIST
2724     $AVFILTER_COMPONENTS_LIST
2725     $AVFORMAT_COMPONENTS_LIST
2726 "
2727
2728 for n in $COMPONENT_LIST; do
2729     v=$(toupper ${n%s})_LIST
2730     eval enable \$$v
2731     eval ${n}_if_any="\$$v"
2732 done
2733
2734 enable $ARCH_EXT_LIST
2735
2736 die_unknown(){
2737     echo "Unknown option \"$1\"."
2738     echo "See $0 --help for available options."
2739     exit 1
2740 }
2741
2742 print_3_columns() {
2743     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2744 }
2745
2746 show_list() {
2747     suffix=_$1
2748     shift
2749     echo $* | sed s/$suffix//g | print_3_columns
2750     exit 0
2751 }
2752
2753 rand_list(){
2754     IFS=', '
2755     set -- $*
2756     unset IFS
2757     for thing; do
2758         comp=${thing%:*}
2759         prob=${thing#$comp}
2760         prob=${prob#:}
2761         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2762         echo "prob ${prob:-0.5}"
2763         printf '%s\n' $comp
2764     done
2765 }
2766
2767 do_random(){
2768     action=$1
2769     shift
2770     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2771     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2772 }
2773
2774 for opt do
2775     optval="${opt#*=}"
2776     case "$opt" in
2777         --extra-ldflags=*)
2778             add_ldflags $optval
2779         ;;
2780         --extra-ldexeflags=*)
2781             add_ldexeflags $optval
2782         ;;
2783         --extra-libs=*)
2784             add_extralibs $optval
2785         ;;
2786         --disable-devices)
2787             disable $INDEV_LIST $OUTDEV_LIST
2788         ;;
2789         --enable-debug=*)
2790             debuglevel="$optval"
2791         ;;
2792         --disable-programs)
2793             disable $PROGRAM_LIST
2794         ;;
2795         --disable-everything)
2796             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2797         ;;
2798         --disable-all)
2799             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2800             disable $LIBRARY_LIST $PROGRAM_LIST doc
2801         ;;
2802         --enable-random|--disable-random)
2803             action=${opt%%-random}
2804             do_random ${action#--} $COMPONENT_LIST
2805         ;;
2806         --enable-random=*|--disable-random=*)
2807             action=${opt%%-random=*}
2808             do_random ${action#--} $optval
2809         ;;
2810         --enable-*=*|--disable-*=*)
2811             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2812             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2813             eval list=\$$(toupper $thing)_LIST
2814             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2815             $action $(filter "$name" $list)
2816         ;;
2817         --enable-avserver|--disable-avserver*)
2818             warn "avserver has been removed, the ${opt} option is only"\
2819                  "provided for compatibility and will be removed in the future"
2820         ;;
2821         --enable-yasm|--disable-yasm)
2822             warn "The ${opt} option is only provided for compatibility and will be\n"\
2823                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2824             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2825         ;;
2826         --enable-?*|--disable-?*)
2827             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2828             if is_in $option $COMPONENT_LIST; then
2829                 test $action = disable && action=unset
2830                 eval $action \$$(toupper ${option%s})_LIST
2831             elif is_in $option $CMDLINE_SELECT; then
2832                 $action $option
2833             else
2834                 die_unknown $opt
2835             fi
2836         ;;
2837         --list-*)
2838             NAME="${opt#--list-}"
2839             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2840             NAME=${NAME%s}
2841             eval show_list $NAME \$$(toupper $NAME)_LIST
2842         ;;
2843         --help|-h) show_help
2844         ;;
2845         --quiet|-q) quiet=yes
2846         ;;
2847         *)
2848             optname="${opt%%=*}"
2849             optname="${optname#--}"
2850             optname=$(echo "$optname" | sed 's/-/_/g')
2851             if is_in $optname $CMDLINE_SET; then
2852                 eval $optname='$optval'
2853             elif is_in $optname $CMDLINE_APPEND; then
2854                 append $optname "$optval"
2855             else
2856                 die_unknown $opt
2857             fi
2858         ;;
2859     esac
2860 done
2861
2862 for e in $env; do
2863     eval "export $e"
2864 done
2865
2866 disabled logging && logfile=/dev/null
2867
2868 # Die early if licensing-related configure options are incompatible.
2869 die_license_disabled() {
2870     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2871 }
2872
2873 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2874 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2875 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2876
2877 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2878
2879 # Disable all the library-specific components if the library itself
2880 # is disabled, see AVCODEC_LIST and following _LIST variables.
2881
2882 disable_components(){
2883     disabled ${1} && disable $(
2884         eval components="\$$(toupper ${1})_COMPONENTS"
2885         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2886     )
2887 }
2888
2889 map 'disable_components $v' $LIBRARY_LIST
2890
2891 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2892 set >> $logfile
2893
2894 case "$toolchain" in
2895     *-asan)
2896         cc_default="${toolchain%-asan}"
2897         add_cflags  -fsanitize=address
2898         add_ldflags -fsanitize=address
2899     ;;
2900     *-msan)
2901         cc_default="${toolchain%-msan}"
2902         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2903         add_ldflags -fsanitize=memory
2904     ;;
2905     *-tsan)
2906         cc_default="${toolchain%-tsan}"
2907         add_cflags  -fsanitize=thread -fPIE
2908         add_ldflags -fsanitize=thread -pie
2909         case "$toolchain" in
2910             gcc-tsan)
2911                 add_cflags  -fPIC
2912                 add_ldflags -fPIC
2913                 ;;
2914         esac
2915     ;;
2916     *-usan)
2917         cc_default="${toolchain%-usan}"
2918         add_cflags  -fsanitize=undefined
2919         add_ldflags -fsanitize=undefined
2920         case "$toolchain" in
2921             clang-usan)
2922                 add_cflags -O1
2923                 ;;
2924         esac
2925     ;;
2926     valgrind-*)
2927         target_exec_default="valgrind"
2928         case "$toolchain" in
2929             valgrind-massif)
2930                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2931                 ;;
2932             valgrind-memcheck)
2933                 target_exec_args="--track-origins=yes --leak-check=full"
2934                 ;;
2935         esac
2936     ;;
2937     msvc)
2938         # Check whether the current MSVC version needs the C99 converter.
2939         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2940         # support enough of C99 to build libav. Default to the new
2941         # behaviour if the regexp was unable to match anything, since this
2942         # successfully parses the version number of existing supported
2943         # versions that require the converter (MSVC 2010 and 2012).
2944         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2945         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2946             cc_default="cl"
2947         else
2948             cc_default="c99wrap cl"
2949         fi
2950         ld_default="$source_path/compat/windows/mslink"
2951         nm_default="dumpbin -symbols"
2952         ar_default="lib"
2953         case "$arch" in
2954         arm*)
2955             as_default="armasm"
2956             ;;
2957         esac
2958         target_os_default="win32"
2959         # Use a relative path for TMPDIR. This makes sure all the
2960         # ffconf temp files are written with a relative path, avoiding
2961         # issues with msys/win32 path conversion for MSVC parameters
2962         # such as -Fo<file> or -out:<file>.
2963         TMPDIR=.
2964     ;;
2965     icl)
2966         cc_default="icl"
2967         ld_default="xilink"
2968         nm_default="dumpbin -symbols"
2969         ar_default="xilib"
2970         target_os_default="win32"
2971         TMPDIR=.
2972     ;;
2973     gcov)
2974         add_cflags  -fprofile-arcs -ftest-coverage
2975         add_ldflags -fprofile-arcs -ftest-coverage
2976     ;;
2977     llvm-cov)
2978         add_cflags -fprofile-arcs -ftest-coverage
2979         add_ldflags --coverage
2980     ;;
2981     hardened)
2982         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2983         add_cflags   -fno-strict-overflow -fstack-protector-all
2984         add_ldflags  -Wl,-z,relro -Wl,-z,now
2985     ;;
2986     ?*)
2987         die "Unknown toolchain $toolchain"
2988     ;;
2989 esac
2990
2991 test -n "$cross_prefix" && enable cross_compile
2992
2993 if enabled cross_compile; then
2994     test -n "$arch" && test -n "$target_os" ||
2995         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2996 fi
2997
2998 ar_default="${cross_prefix}${ar_default}"
2999 cc_default="${cross_prefix}${cc_default}"
3000 objcc_default="${cross_prefix}${objcc_default}"
3001 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3002 nm_default="${cross_prefix}${nm_default}"
3003 pkg_config_default="${cross_prefix}${pkg_config_default}"
3004 ranlib="${cross_prefix}${ranlib}"
3005 strip="${cross_prefix}${strip}"
3006
3007 sysinclude_default="${sysroot}/usr/include"
3008
3009 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3010 enabled cross_compile || host_cc_default=$cc
3011 set_default host_cc
3012
3013 if ! $pkg_config --version >/dev/null 2>&1; then
3014     warn "$pkg_config not found, library detection may fail."
3015     pkg_config=false
3016 fi
3017
3018 exesuf() {
3019     case $1 in
3020         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3021     esac
3022 }
3023
3024 EXESUF=$(exesuf $target_os)
3025 HOSTEXESUF=$(exesuf $host_os)
3026
3027 # set temporary file name
3028 : ${TMPDIR:=$TEMPDIR}
3029 : ${TMPDIR:=$TMP}
3030 : ${TMPDIR:=/tmp}
3031
3032 if ! check_cmd mktemp -u XXXXXX; then
3033     # simple replacement for missing mktemp
3034     # NOT SAFE FOR GENERAL USE
3035     mktemp(){
3036         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3037         echo "$tmpname"
3038         mkdir "$tmpname"
3039     }
3040 fi
3041
3042 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3043     die "Unable to create temporary directory in $TMPDIR."
3044
3045 tmpfile(){
3046     tmp="${AVTMPDIR}/test"$2
3047     (set -C; exec > $tmp) 2> /dev/null ||
3048         die "Unable to create temporary file in $AVTMPDIR."
3049     eval $1=$tmp
3050 }
3051
3052 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3053 trap 'exit 2' INT
3054
3055 tmpfile TMPASM .asm
3056 tmpfile TMPC   .c
3057 tmpfile TMPE   $EXESUF
3058 tmpfile TMPH   .h
3059 tmpfile TMPO   .o
3060 tmpfile TMPS   .S
3061 tmpfile TMPSH  .sh
3062 tmpfile TMPV   .ver
3063
3064 unset -f mktemp
3065
3066 chmod +x $TMPE
3067
3068 # make sure we can execute files in $TMPDIR
3069 cat > $TMPSH 2>> $logfile <<EOF
3070 #! /bin/sh
3071 EOF
3072 chmod +x $TMPSH >> $logfile 2>&1
3073 if ! $TMPSH >> $logfile 2>&1; then
3074     cat <<EOF
3075 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3076 variable to another directory and make sure that it is not mounted noexec.
3077 EOF
3078     die "Sanity test failed."
3079 fi
3080
3081 armasm_flags(){
3082     for flag; do
3083         case $flag in
3084             # Filter out MSVC cl.exe options from cflags that shouldn't
3085             # be passed to gas-preprocessor
3086             -M[TD]*)                                            ;;
3087             *)                  echo $flag                      ;;
3088         esac
3089    done
3090 }
3091
3092 ccc_flags(){
3093     for flag; do
3094         case $flag in
3095             -std=c99)           echo -c99                       ;;
3096             -mcpu=*)            echo -arch ${flag#*=}           ;;
3097             -mieee)             echo -ieee                      ;;
3098             -O*|-fast)          echo $flag                      ;;
3099             -fno-math-errno)    echo -assume nomath_errno       ;;
3100             -g)                 echo -g3                        ;;
3101             -Wall)              echo -msg_enable level2         ;;
3102             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3103             -Wl,*)              echo $flag                      ;;
3104             -f*|-W*)                                            ;;
3105             *)                  echo $flag                      ;;
3106         esac
3107    done
3108 }
3109
3110 cparser_flags(){
3111     for flag; do
3112         case $flag in
3113             -Wno-switch)             echo -Wno-switch-enum ;;
3114             -Wno-format-zero-length) ;;
3115             -Wdisabled-optimization) ;;
3116             -Wno-pointer-sign)       echo -Wno-other ;;
3117             *)                       echo $flag ;;
3118         esac
3119     done
3120 }
3121
3122 msvc_common_flags(){
3123     for flag; do
3124         case $flag in
3125             # In addition to specifying certain flags under the compiler
3126             # specific filters, they must be specified here as well or else the
3127             # generic catch all at the bottom will print the original flag.
3128             -Wall)                ;;
3129             -Wextra)              ;;
3130             -std=c99)             ;;
3131             # Common flags
3132             -fomit-frame-pointer) ;;
3133             -g)                   echo -Z7 ;;
3134             -fno-math-errno)      ;;
3135             -fno-common)          ;;
3136             -fno-signed-zeros)    ;;
3137             -fPIC)                ;;
3138             -mthumb)              ;;
3139             -march=*)             ;;
3140             -lz)                  echo zlib.lib ;;
3141             -lx264)               echo libx264.lib ;;
3142             -l*)                  echo ${flag#-l}.lib ;;
3143             -L*)                  echo -libpath:${flag#-L} ;;
3144             *)                    echo $flag ;;
3145         esac
3146     done
3147 }
3148
3149 msvc_flags(){
3150     msvc_common_flags "$@"
3151     for flag; do
3152         case $flag in
3153             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3154                                        -wd4554 ;;
3155             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3156                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3157                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3158                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3159         esac
3160     done
3161 }
3162
3163 icl_flags(){
3164     msvc_common_flags "$@"
3165     for flag; do
3166         case $flag in
3167             # Despite what Intel's documentation says -Wall, which is supported
3168             # on Windows, does enable remarks so disable them here.
3169             -Wall)                echo $flag -Qdiag-disable:remark ;;
3170             -std=c99)             echo -Qstd=c99 ;;
3171         esac
3172     done
3173 }
3174
3175 pgi_flags(){
3176     for flag; do
3177         case $flag in
3178             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3179             -fomit-frame-pointer) echo -Mnoframe ;;
3180             -g)                   echo -gopt ;;
3181             *)                    echo $flag ;;
3182         esac
3183     done
3184 }
3185
3186 suncc_flags(){
3187     for flag; do
3188         case $flag in
3189             -march=*|-mcpu=*)
3190                 case "${flag#*=}" in
3191                     native)                   echo -xtarget=native       ;;
3192                     v9|niagara)               echo -xarch=sparc          ;;
3193                     ultrasparc)               echo -xarch=sparcvis       ;;
3194                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3195                     i586|pentium)             echo -xchip=pentium        ;;
3196                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3197                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3198                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3199                     pentium4*)          echo -xtarget=pentium4           ;;
3200                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3201                     *-sse3)             echo -xarch=sse3                 ;;
3202                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3203                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3204                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3205                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3206                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3207                     k8|opteron|athlon64|athlon-fx)
3208                                                echo -xarch=sse2a         ;;
3209                     athlon*)                   echo -xarch=pentium_proa  ;;
3210                 esac
3211                 ;;
3212             -std=c99)             echo -xc99              ;;
3213             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3214             -fPIC)                echo -KPIC -xcode=pic32 ;;
3215             -W*,*)                echo $flag              ;;
3216             -f*-*|-W*|-mimpure-text)                      ;;
3217             -shared)              echo -G                 ;;
3218             *)                    echo $flag              ;;
3219         esac
3220     done
3221 }
3222
3223 tms470_flags(){
3224     for flag; do
3225         case $flag in
3226             -march=*|-mcpu=*)
3227                 case "${flag#*=}" in
3228                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3229                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3230                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3231                     armv6*|arm11*)          echo -mv=6   ;;
3232                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3233                                             echo -mv=5e  ;;
3234                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3235                 esac
3236                 ;;
3237             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3238             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3239             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3240             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3241             -msoft-float)   echo --float_support=vfplib       ;;
3242             -O[0-3]|-mf=*)  echo $flag                        ;;
3243             -g)             echo -g -mn                       ;;
3244             -pds=*)         echo $flag                        ;;
3245             -D*|-I*)        echo $flag                        ;;
3246             --gcc|--abi=*)  echo $flag                        ;;
3247             -me)            echo $flag                        ;;
3248         esac
3249     done
3250 }
3251
3252 probe_cc(){
3253     pfx=$1
3254     _cc=$2
3255
3256     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3257     unset _ld_o _ldflags _ld_lib _ld_path
3258     unset _depflags _DEPCMD _DEPFLAGS
3259     _flags_filter=echo
3260
3261     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3262         _type=llvm_gcc
3263         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3264         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3265         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3266         _cflags_speed='-O3'
3267         _cflags_size='-Os'
3268     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3269         _type=gcc
3270         gcc_version=$($_cc --version | head -n1)
3271         gcc_basever=$($_cc -dumpversion)
3272         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3273         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3274         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3275         if ! $_cc -dumpversion | grep -q '^2\.'; then
3276             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3277         fi
3278         _cflags_speed='-O3'
3279         _cflags_size='-Os'
3280     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3281         _type=icc
3282         _ident=$($_cc --version | head -n1)
3283         _depflags='-MMD'
3284         _cflags_speed='-O3'
3285         _cflags_size='-Os'
3286         _cflags_noopt='-O1'
3287     elif $_cc -v 2>&1 | grep -q xlc; then
3288         _type=xlc
3289         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3290         _cflags_speed='-O5'
3291         _cflags_size='-O5 -qcompact'
3292     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3293         _type=ccc
3294         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3295         _DEPFLAGS='-M'
3296         _cflags_speed='-fast'
3297         _cflags_size='-O1'
3298         _flags_filter=ccc_flags
3299     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3300         test -d "$sysroot" || die "No valid sysroot specified."
3301         _type=armcc
3302         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3303         armcc_conf="$PWD/armcc.conf"
3304         $_cc --arm_linux_configure                 \
3305              --arm_linux_config_file="$armcc_conf" \
3306              --configure_sysroot="$sysroot"        \
3307              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3308              die "Error creating armcc configuration file."
3309         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3310         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3311         as_default="${cross_prefix}gcc"
3312         _depflags='-MMD'
3313         _cflags_speed='-O3'
3314         _cflags_size='-Os'
3315     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3316         _type=tms470
3317         _ident=$($_cc -version | head -n1 | tr -s ' ')
3318         _flags='--gcc --abi=eabi -me'
3319         _cc_e='-ppl -fe=$@'
3320         _cc_o='-fe=$@'
3321         _depflags='-ppa -ppd=$(@:.o=.d)'
3322         _cflags_speed='-O3 -mf=5'
3323         _cflags_size='-O3 -mf=2'
3324         _flags_filter=tms470_flags
3325     elif $_cc -v 2>&1 | grep -q clang; then
3326         _type=clang
3327         _ident=$($_cc --version 2>/dev/null | head -n1)
3328         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3329         _cflags_speed='-O3'
3330         _cflags_size='-Os'
3331     elif $_cc -V 2>&1 | grep -q Sun; then
3332         _type=suncc
3333         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3334         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3335         _DEPFLAGS='-xM1 -xc99'
3336         _ldflags='-std=c99'
3337         _cflags_speed='-O5'
3338         _cflags_size='-O5 -xspace'
3339         _flags_filter=suncc_flags
3340     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3341         _type=pathscale
3342         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3343         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3344         _cflags_speed='-O2'
3345         _cflags_size='-Os'
3346         _flags_filter='filter_out -Wdisabled-optimization'
3347     elif $_cc -v 2>&1 | grep -q Open64; then
3348         _type=open64
3349         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3350         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3351         _cflags_speed='-O2'
3352         _cflags_size='-Os'
3353         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3354     elif $_cc -V 2>&1 | grep -q Portland; then
3355         _type=pgi
3356         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3357         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3358         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3359         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3360         _cflags_noopt="-O1"
3361         _flags_filter=pgi_flags
3362     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3363         _type=armasm
3364         _ident=$($_cc | head -n1)
3365         # 4509: "This form of conditional instruction is deprecated"
3366         _flags="-nologo -ignore 4509"
3367         _flags_filter=armasm_flags
3368     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3369         _type=msvc
3370         _ident=$($_cc 2>&1 | head -n1)
3371         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3372         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3373         _cflags_speed="-O2"
3374         _cflags_size="-O1"
3375         _cflags_noopt="-O1"
3376         if $_cc -nologo- 2>&1 | grep -q Linker; then
3377             _ld_o='-out:$@'
3378         else
3379             _ld_o='-Fe$@'
3380         fi
3381         _cc_o='-Fo$@'
3382         _cc_e='-P -Fi$@'
3383         _flags_filter=msvc_flags
3384         _ld_lib='lib%.a'
3385         _ld_path='-libpath:'
3386         _flags='-nologo'
3387     elif $_cc 2>&1 | grep -q Intel; then
3388         _type=icl
3389         _ident=$($_cc 2>&1 | head -n1)
3390         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3391         # Not only is O3 broken on 13.x+ but it is slower on all previous
3392         # versions (tested) as well.
3393         _cflags_speed="-O2"
3394         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3395         if $_cc 2>&1 | grep -q Linker; then
3396             _ld_o='-out:$@'
3397         else
3398             _ld_o='-Fe$@'
3399         fi
3400         _cc_o='-Fo$@'
3401         _cc_e='-P'
3402         _flags_filter=icl_flags
3403         _ld_lib='lib%.a'
3404         _ld_path='-libpath:'
3405         # -Qdiag-error to make icl error when seeing certain unknown arguments
3406         _flags='-nologo -Qdiag-error:4044,10157'
3407         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3408         # with MSVC which enables it by default.
3409         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3410     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3411         # lld can emulate multiple different linkers; in ms link.exe mode,
3412         # the -? parameter gives the help output which contains an identifyable
3413         # string, while it gives an error in other modes.
3414         _type=lld-link
3415         # The link.exe mode doesn't have a switch for getting the version,
3416         # but we can force it back to gnu mode and get the version from there.
3417         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3418         _ld_o='-out:$@'
3419         _flags_filter=msvc_flags
3420         _ld_lib='lib%.a'
3421         _ld_path='-libpath:'
3422     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3423         _type=cparser
3424         _ident=$($_cc --version | head -n1)
3425         _depflags='-MMD'
3426         _cflags_speed='-O4'
3427         _cflags_size='-O2'
3428         _flags_filter=cparser_flags
3429     fi
3430
3431     eval ${pfx}_type=\$_type
3432     eval ${pfx}_ident=\$_ident
3433 }
3434
3435 set_ccvars(){
3436     eval ${1}_C=\${_cc_c-\${${1}_C}}
3437     eval ${1}_E=\${_cc_e-\${${1}_E}}
3438     eval ${1}_O=\${_cc_o-\${${1}_O}}
3439
3440     if [ -n "$_depflags" ]; then
3441         eval ${1}_DEPFLAGS=\$_depflags
3442     else
3443         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3444         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3445         eval DEP${1}FLAGS=\$_flags
3446     fi
3447 }
3448
3449 probe_cc cc "$cc"
3450 cflags_filter=$_flags_filter
3451 cflags_speed=$_cflags_speed
3452 cflags_size=$_cflags_size
3453 cflags_noopt=$_cflags_noopt
3454 add_cflags $_flags $_cflags
3455 cc_ldflags=$_ldflags
3456 set_ccvars CC
3457
3458 probe_cc hostcc "$host_cc"
3459 host_cflags_filter=$_flags_filter
3460 host_cflags_speed=$_cflags_speed
3461 add_host_cflags  $_flags $_cflags
3462 set_ccvars HOSTCC
3463
3464 test -n "$cc_type" && enable $cc_type ||
3465     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3466
3467 : ${as_default:=$cc}
3468 : ${objcc_default:=$cc}
3469 : ${dep_cc_default:=$cc}
3470 : ${ld_default:=$cc}
3471 : ${host_ld_default:=$host_cc}
3472 set_default ar as objcc dep_cc ld host_ld
3473
3474 probe_cc as "$as"
3475 asflags_filter=$_flags_filter
3476 add_asflags $_flags $_cflags
3477 set_ccvars AS
3478
3479 probe_cc objcc "$objcc"
3480 objcflags_filter=$_flags_filter
3481 add_objcflags $_flags $_cflags
3482 set_ccvars OBJC
3483
3484 probe_cc ld "$ld"
3485 ldflags_filter=$_flags_filter
3486 add_ldflags $_flags $_ldflags
3487 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3488 LD_O=${_ld_o-$LD_O}
3489 LD_LIB=${_ld_lib-$LD_LIB}
3490 LD_PATH=${_ld_path-$LD_PATH}
3491
3492 probe_cc hostld "$host_ld"
3493 host_ldflags_filter=$_flags_filter
3494 add_host_ldflags $_flags $_ldflags
3495 HOSTLD_O=${_ld_o-$HOSTLD_O}
3496
3497 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3498     probe_cc depcc "$dep_cc"
3499     CCDEP=${_DEPCMD:-$DEPCMD}
3500     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3501     DEPCCFLAGS=$_flags
3502 fi
3503
3504 if $ar 2>&1 | grep -q Microsoft; then
3505     arflags="-nologo"
3506     ar_o='-out:$@'
3507 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3508     arflags="rq"
3509     ar_o='$@'
3510 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3511     arflags='-Xany -r -c'
3512     ar_o='$@'
3513 else
3514     arflags="rc"
3515     ar_o='$@'
3516 fi
3517
3518 add_cflags $extra_cflags
3519 add_objcflags $extra_objcflags
3520 add_asflags $extra_cflags
3521
3522 if test -n "$sysroot"; then
3523     case "$cc_type" in
3524         gcc|llvm_gcc|clang)
3525             add_cppflags --sysroot="$sysroot"
3526             add_ldflags --sysroot="$sysroot"
3527         ;;
3528         tms470)
3529             add_cppflags -I"$sysinclude"
3530             add_ldflags  --sysroot="$sysroot"
3531         ;;
3532     esac
3533 fi
3534
3535 if test "$cpu" = host; then
3536     enabled cross_compile &&
3537         die "--cpu=host makes no sense when cross-compiling."
3538
3539     case "$cc_type" in
3540         gcc|llvm_gcc)
3541             check_native(){
3542                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3543                 sed -n "/cc1.*$1=/{
3544                             s/.*$1=\\([^ ]*\\).*/\\1/
3545                             p
3546                             q
3547                         }" $TMPE
3548             }
3549             cpu=$(check_native -march || check_native -mcpu)
3550         ;;
3551     esac
3552
3553     test "${cpu:-host}" = host &&
3554         die "--cpu=host not supported with compiler $cc"
3555 fi
3556
3557 # Deal with common $arch aliases
3558 case "$arch" in
3559     aarch64|arm64)
3560         arch="aarch64"
3561     ;;
3562     arm*)
3563         arch="arm"
3564     ;;
3565     mips*|IP*)
3566         case "$arch" in
3567         *el)
3568             add_cppflags -EL
3569             add_ldflags -EL
3570         ;;
3571         *eb)
3572             add_cppflags -EB
3573             add_ldflags -EB
3574         ;;
3575         esac
3576         arch="mips"
3577     ;;
3578     parisc*|hppa*)
3579         arch="parisc"
3580     ;;
3581     "Power Macintosh"|ppc*|powerpc*)
3582         arch="ppc"
3583     ;;
3584     s390|s390x)
3585         arch="s390"
3586     ;;
3587     sh4|sh)
3588         arch="sh4"
3589     ;;
3590     sun4u|sparc*)
3591         arch="sparc"
3592     ;;
3593     tilegx|tile-gx)
3594         arch="tilegx"
3595     ;;
3596     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3597         arch="x86"
3598     ;;
3599 esac
3600
3601 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3602 enable $arch
3603
3604 # Add processor-specific flags
3605 if enabled aarch64; then
3606
3607     case $cpu in
3608         armv*)
3609             cpuflags="-march=$cpu"
3610         ;;
3611         *)
3612             cpuflags="-mcpu=$cpu"
3613         ;;
3614     esac
3615
3616 elif enabled alpha; then
3617
3618     cpuflags="-mcpu=$cpu"
3619
3620 elif enabled arm; then
3621
3622     check_arm_arch() {
3623         check_cpp_condition stddef.h \
3624             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3625             $cpuflags
3626     }
3627
3628     probe_arm_arch() {
3629         if   check_arm_arch 4;        then echo armv4
3630         elif check_arm_arch 4T;       then echo armv4t
3631         elif check_arm_arch 5;        then echo armv5
3632         elif check_arm_arch 5E;       then echo armv5e
3633         elif check_arm_arch 5T;       then echo armv5t
3634         elif check_arm_arch 5TE;      then echo armv5te
3635         elif check_arm_arch 5TEJ;     then echo armv5te
3636         elif check_arm_arch 6;        then echo armv6
3637         elif check_arm_arch 6J;       then echo armv6j
3638         elif check_arm_arch 6K;       then echo armv6k
3639         elif check_arm_arch 6Z;       then echo armv6z
3640         elif check_arm_arch 6ZK;      then echo armv6zk
3641         elif check_arm_arch 6T2;      then echo armv6t2
3642         elif check_arm_arch 7;        then echo armv7
3643         elif check_arm_arch 7A  7_A;  then echo armv7-a
3644         elif check_arm_arch 7S;       then echo armv7-a
3645         elif check_arm_arch 7R  7_R;  then echo armv7-r
3646         elif check_arm_arch 7M  7_M;  then echo armv7-m
3647         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3648         elif check_arm_arch 8A  8_A;  then echo armv8-a
3649         fi
3650     }
3651
3652     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3653
3654     case $cpu in
3655         armv*)
3656             cpuflags="-march=$cpu"
3657             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3658         ;;
3659         *)
3660             cpuflags="-mcpu=$cpu"
3661             case $cpu in
3662                 cortex-a*)                               subarch=armv7a  ;;
3663                 cortex-r*)                               subarch=armv7r  ;;
3664                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3665                 arm11*)                                  subarch=armv6   ;;
3666                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3667                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3668                 *)                             subarch=$(probe_arm_arch) ;;
3669             esac
3670         ;;
3671     esac
3672
3673     case "$subarch" in
3674         armv5t*)    enable fast_clz                ;;
3675         armv[6-8]*) enable fast_clz fast_unaligned ;;
3676     esac
3677
3678 elif enabled avr32; then
3679
3680     case $cpu in
3681         ap7[02]0[0-2])
3682             subarch="avr32_ap"
3683             cpuflags="-mpart=$cpu"
3684         ;;
3685         ap)
3686             subarch="avr32_ap"
3687             cpuflags="-march=$cpu"
3688         ;;
3689         uc3[ab]*)
3690             subarch="avr32_uc"
3691             cpuflags="-mcpu=$cpu"
3692         ;;
3693         uc)
3694             subarch="avr32_uc"
3695             cpuflags="-march=$cpu"
3696         ;;
3697     esac
3698
3699 elif enabled bfin; then
3700
3701     cpuflags="-mcpu=$cpu"
3702
3703 elif enabled mips; then
3704
3705     cpuflags="-march=$cpu"
3706
3707 elif enabled ppc; then
3708
3709     disable ldbrx
3710
3711     case $(tolower $cpu) in
3712         601|ppc601|powerpc601)
3713             cpuflags="-mcpu=601"
3714             disable altivec
3715         ;;
3716         603*|ppc603*|powerpc603*)
3717             cpuflags="-mcpu=603"
3718             disable altivec
3719         ;;
3720         604*|ppc604*|powerpc604*)
3721             cpuflags="-mcpu=604"
3722             disable altivec
3723         ;;
3724         g3|75*|ppc75*|powerpc75*)
3725             cpuflags="-mcpu=750"
3726             disable altivec
3727         ;;
3728         g4|745*|ppc745*|powerpc745*)
3729             cpuflags="-mcpu=7450"
3730             disable vsx
3731         ;;
3732         74*|ppc74*|powerpc74*)
3733             cpuflags="-mcpu=7400"
3734             disable vsx
3735         ;;
3736         g5|970|ppc970|powerpc970)
3737             cpuflags="-mcpu=970"
3738             disable vsx
3739         ;;
3740         power[3-6]*)
3741             cpuflags="-mcpu=$cpu"
3742             disable vsx
3743         ;;
3744         power[7-8]*)
3745             cpuflags="-mcpu=$cpu"
3746             enable ldbrx
3747         ;;
3748         cell)
3749             cpuflags="-mcpu=cell"
3750             enable ldbrx
3751             disable vsx
3752         ;;
3753         e500mc)
3754             cpuflags="-mcpu=e500mc"
3755             disable altivec
3756         ;;
3757         e500v2)
3758             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3759             disable altivec
3760             disable dcbzl
3761         ;;
3762         e500)
3763             cpuflags="-mcpu=8540 -mhard-float"
3764             disable altivec
3765             disable dcbzl
3766         ;;
3767     esac
3768
3769 elif enabled sparc; then
3770
3771     case $cpu in
3772         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3773             cpuflags="-mcpu=$cpu"
3774         ;;
3775         ultrasparc*|niagara[234])
3776             cpuflags="-mcpu=$cpu"
3777         ;;
3778     esac
3779
3780 elif enabled x86; then
3781
3782     case $cpu in
3783         i[345]86|pentium)
3784             cpuflags="-march=$cpu"
3785             disable i686
3786             disable mmx
3787         ;;
3788         # targets that do NOT support nopl and conditional mov (cmov)
3789         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3790             cpuflags="-march=$cpu"
3791             disable i686
3792         ;;
3793         # targets that do support nopl and conditional mov (cmov)
3794         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3795             cpuflags="-march=$cpu"
3796             enable i686
3797             enable fast_cmov
3798         ;;
3799         # targets that do support conditional mov but on which it's slow
3800         pentium4|pentium4m|prescott|nocona)
3801             cpuflags="-march=$cpu"
3802             enable i686
3803             disable fast_cmov
3804         ;;
3805     esac
3806
3807 fi
3808
3809 if [ "$cpu" != generic ]; then
3810     add_cflags  $cpuflags
3811     add_asflags $cpuflags
3812     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3813 fi
3814
3815 # compiler sanity check
3816 check_exec <<EOF
3817 int main(void){ return 0; }
3818 EOF
3819 if test "$?" != 0; then
3820     echo "$cc is unable to create an executable file."
3821     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3822         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3823         echo "Only do this if you know what cross compiling means."
3824     fi
3825     die "C compiler test failed."
3826 fi
3827
3828 add_cppflags -D_ISOC99_SOURCE
3829
3830 # some compilers silently accept -std=c11, so we also need to check that the
3831 # version macro is defined properly
3832 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3833     add_cflags -std=c11 ||
3834     check_cflags -std=c99
3835
3836 check_cppflags -D_FILE_OFFSET_BITS=64
3837 check_cppflags -D_LARGEFILE_SOURCE
3838
3839 add_host_cppflags -D_ISOC99_SOURCE
3840 check_host_cflags -std=c99
3841 check_host_cflags -Wall
3842 check_host_cflags $host_cflags_speed
3843
3844 check_64bit(){
3845     arch32=$1
3846     arch64=$2
3847     expr=$3
3848     check_code cc "" "int test[2*($expr) - 1]" &&
3849         subarch=$arch64 || subarch=$arch32
3850 }
3851
3852 case "$arch" in
3853     aarch64|alpha|ia64)
3854         spic=$shared
3855     ;;
3856     mips)
3857         check_64bit mips mips64 '_MIPS_SIM > 1'
3858         spic=$shared
3859     ;;
3860     parisc)
3861         check_64bit parisc parisc64 'sizeof(void *) > 4'
3862         spic=$shared
3863     ;;
3864     ppc)
3865         check_64bit ppc ppc64 'sizeof(void *) > 4'
3866         spic=$shared
3867     ;;
3868     s390)
3869         check_64bit s390 s390x 'sizeof(void *) > 4'
3870         spic=$shared
3871     ;;
3872     sparc)
3873         check_64bit sparc sparc64 'sizeof(void *) > 4'
3874         spic=$shared
3875     ;;
3876     x86)
3877         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3878         if test "$subarch" = "x86_64"; then
3879             spic=$shared
3880         fi
3881     ;;
3882 esac
3883
3884 enable $subarch
3885 enabled spic && enable_weak pic
3886
3887 enabled x86_64 && objformat=elf64 || objformat="elf32"
3888
3889 # OS specific
3890 case $target_os in
3891     aix)
3892         SHFLAGS=-shared
3893         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3894         enabled shared && add_ldflags -Wl,-brtl
3895         ;;
3896     android)
3897         disable symver
3898         enable section_data_rel_ro
3899         SLIB_INSTALL_NAME='$(SLIBNAME)'
3900         SLIB_INSTALL_LINKS=
3901         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3902         ;;
3903     haiku)
3904         prefix_default="/boot/common"
3905         network_extralibs="-lnetwork"
3906         host_extralibs=
3907         ;;
3908     sunos)
3909         SHFLAGS='-shared -Wl,-h,$$(@F)'
3910         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3911         network_extralibs="-lsocket -lnsl"
3912         # When using suncc to build, the Solaris linker will mark
3913         # an executable with each instruction set encountered by
3914         # the Solaris assembler.  As our libraries contain their own
3915         # guards for processor-specific code, instead suppress
3916         # generation of the HWCAPS ELF section on Solaris x86 only.
3917         enabled_all suncc x86 &&
3918             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3919             add_ldflags -Wl,-M,mapfile
3920         nm_default='nm -P -g'
3921         version_script='-M'
3922         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3923         ;;
3924     netbsd)
3925         disable symver
3926         oss_indev_extralibs="-lossaudio"
3927         oss_outdev_extralibs="-lossaudio"
3928         ;;
3929     openbsd|bitrig)
3930         disable symver
3931         SHFLAGS='-shared'
3932         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3933         SLIB_INSTALL_LINKS=
3934         oss_indev_extralibs="-lossaudio"
3935         oss_outdev_extralibs="-lossaudio"
3936         ;;
3937     dragonfly)
3938         disable symver
3939         ;;
3940     freebsd)
3941         ;;
3942     bsd/os)
3943         add_extralibs -lpoll -lgnugetopt
3944         ;;
3945     darwin)
3946         enabled ppc && add_asflags -force_cpusubtype_ALL
3947         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3948         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3949         add_ldflags -Wl,-dynamic,-search_paths_first
3950         check_cflags -Werror=partial-availability
3951         SLIBSUF=".dylib"
3952         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3953         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3954         enabled x86_64 && objformat="macho64" || objformat="macho32"
3955         enabled_any pic shared ||
3956             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3957         check_header dispatch/dispatch.h &&
3958             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3959         ;;
3960     msys*)
3961         die "Native MSYS builds are discouraged, please use the MINGW environment."
3962         ;;
3963     mingw32*|mingw64*)
3964         if test $target_os = "mingw32ce"; then
3965             disable network
3966         else
3967             target_os=mingw32
3968         fi
3969         LIBTARGET=i386
3970         if enabled x86_64; then
3971             LIBTARGET="i386:x86-64"
3972         elif enabled arm; then
3973             LIBTARGET=arm-wince
3974         fi
3975         check_ldflags -Wl,--nxcompat
3976         check_ldflags -Wl,--dynamicbase
3977         shlibdir_default="$bindir_default"
3978         SLIBPREF=""
3979         SLIBSUF=".dll"
3980         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3981         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3982         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3983         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3984         SLIB_INSTALL_LINKS=
3985         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3986         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3987         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3988         enabled x86_64 && objformat="win64" || objformat="win32"
3989         dlltool="${cross_prefix}dlltool"
3990         ranlib=:
3991         enable dos_paths
3992         ;;
3993     win32|win64)
3994         disable symver
3995         if enabled shared; then
3996             # Link to the import library instead of the normal static library
3997             # for shared libs.
3998             LD_LIB='%.lib'
3999             # Cannot build both shared and static libs with MSVC or icl.
4000             disable static
4001         fi
4002         shlibdir_default="$bindir_default"
4003         SLIBPREF=""
4004         SLIBSUF=".dll"
4005         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4006         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4007         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4008         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4009         SLIB_INSTALL_LINKS=
4010         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4011         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4012         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4013         enabled x86_64 && objformat="win64" || objformat="win32"
4014         ranlib=:
4015         enable dos_paths
4016         ;;
4017     cygwin*)
4018         target_os=cygwin
4019         shlibdir_default="$bindir_default"
4020         SLIBPREF="cyg"
4021         SLIBSUF=".dll"
4022         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4023         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4024         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4025         SLIB_INSTALL_LINKS=
4026         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4027         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4028         enabled x86_64 && objformat="win64" || objformat="win32"
4029         enable dos_paths
4030         ;;
4031     *-dos|freedos|opendos)
4032         network_extralibs="-lsocket"
4033         objformat="coff"
4034         enable dos_paths
4035         add_cppflags -U__STRICT_ANSI__
4036         ;;
4037     linux)
4038         enable dv1394
4039         enable section_data_rel_ro
4040         ;;
4041     irix*)
4042         target_os=irix
4043         ranlib="echo ignoring ranlib"
4044         ;;
4045     os/2*)
4046         ln_s="cp -f"
4047         objformat="aout"
4048         add_cppflags -D_GNU_SOURCE
4049         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4050         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4051         LIBSUF="_s.a"
4052         SLIBPREF=""
4053         SLIBSUF=".dll"
4054         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4055         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4056         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4057             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4058             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4059             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4060             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4061         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4062             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4063         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4064         enable dos_paths
4065         ;;
4066     gnu/kfreebsd)
4067         add_cppflags -D_BSD_SOURCE
4068         ;;
4069     gnu)
4070         ;;
4071     qnx)
4072         add_cppflags -D_QNX_SOURCE
4073         network_extralibs="-lsocket"
4074         ;;
4075     symbian)
4076         SLIBSUF=".dll"
4077         enable dos_paths
4078         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4079         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4080         add_ldflags -Wl,--target1-abs,--no-undefined \
4081                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4082                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4083         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4084                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4085                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4086         ;;
4087     osf1)
4088         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4089         ;;
4090     minix)
4091         ;;
4092     none)
4093         ;;
4094     *)
4095         die "Unknown OS '$target_os'."
4096         ;;
4097 esac
4098
4099 # determine libc flavour
4100
4101 probe_libc(){
4102     pfx=$1
4103     pfx_no_=${pfx%_}
4104     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4105     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4106         eval ${pfx}libc_type=uclibc
4107         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4108     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4109         eval ${pfx}libc_type=glibc
4110         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4111     # MinGW headers can be installed on Cygwin, so check for newlib first.
4112     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4113         eval ${pfx}libc_type=newlib
4114         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4115     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4116     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4117         eval ${pfx}libc_type=mingw64
4118         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4119         eval test \$${pfx_no_}cc_type = "gcc" &&
4120             add_${pfx}cppflags -D__printf__=__gnu_printf__
4121     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4122          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4123         eval ${pfx}libc_type=mingw32
4124         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4125             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4126             die "ERROR: MinGW32 runtime version must be >= 3.15."
4127         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4128         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4129             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4130         eval test \$${pfx_no_}cc_type = "gcc" &&
4131             add_${pfx}cppflags -D__printf__=__gnu_printf__
4132     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4133         eval ${pfx}libc_type=msvcrt
4134         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4135             if [ "$pfx" = host_ ]; then
4136                 add_host_cppflags -Dsnprintf=_snprintf
4137             else
4138                 add_compat strtod.o strtod=avpriv_strtod
4139                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4140                                              _snprintf=avpriv_snprintf  \
4141                                              vsnprintf=avpriv_vsnprintf
4142             fi
4143         fi
4144         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4145         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4146         # 0x601 by default unless something else is set by the user.
4147         # This can easily lead to us detecting functions only present
4148         # in such new versions and producing binaries requiring windows 7.0.
4149         # Therefore explicitly set the default to XP unless the user has
4150         # set something else on the command line.
4151         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4152         # family. For these cases, configure is free to use any functions
4153         # found in the SDK headers by default. (Alternatively, we could force
4154         # _WIN32_WINNT to 0x0602 in that case.)
4155         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4156             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4157 #ifdef WINAPI_FAMILY
4158 #include <winapifamily.h>
4159 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4160 #error not desktop
4161 #endif
4162 #endif
4163 EOF
4164         if [ "$pfx" = "" ]; then
4165             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4166         fi
4167     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4168         eval ${pfx}libc_type=klibc
4169     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4170         eval ${pfx}libc_type=bionic
4171     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4172         eval ${pfx}libc_type=solaris
4173         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4174     else
4175         eval ${pfx}libc_type=default
4176         add_${pfx}cppflags -D_DEFAULT_SOURCE
4177     fi
4178 }
4179
4180 probe_libc
4181 test -n "$libc_type" && enable libc_$libc_type
4182 probe_libc host_
4183 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4184
4185 # hacks for compiler/libc/os combinations
4186
4187 case $libc_type in
4188     bionic)
4189         add_compat strtod.o strtod=avpriv_strtod
4190         ;;
4191     glibc)
4192         if enabled tms470; then
4193             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4194             add_cppflags -D__USER_LABEL_PREFIX__=
4195             add_cppflags -D__builtin_memset=memset
4196             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4197             add_cflags   -pds=48    # incompatible redefinition of macro
4198         elif enabled ccc; then
4199             add_ldflags -Wl,-z,now  # calls to libots crash without this
4200         fi
4201         ;;
4202 esac
4203
4204 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4205     add_cppflags '-I\$(SRC_PATH)/compat/float'
4206
4207 esc(){
4208     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4209 }
4210
4211 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4212
4213 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4214
4215 set_default $PATHS_LIST
4216 set_default nm
4217
4218 # we need to build at least one lib type
4219 if ! enabled_any static shared; then
4220     cat <<EOF
4221 At least one library type must be built.
4222 Specify --enable-static to build the static libraries or --enable-shared to
4223 build the shared libraries as well. To only build the shared libraries specify
4224 --disable-static in addition to --enable-shared.
4225 EOF
4226     exit 1
4227 fi
4228
4229 disabled optimizations || check_cflags -fomit-frame-pointer
4230
4231 enable_weak_pic() {
4232     disabled pic && return
4233     enable pic
4234     add_cppflags -DPIC
4235     case "$target_os" in
4236     mingw*|cygwin*)
4237         ;;
4238     *)
4239         add_cflags -fPIC
4240         ;;
4241     esac
4242     add_asflags  -fPIC
4243 }
4244
4245 enabled pic && enable_weak_pic
4246
4247 check_cc <<EOF || die "Symbol mangling check failed."
4248 int ff_extern;
4249 EOF
4250 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4251 extern_prefix=${sym%%ff_extern*}
4252
4253 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4254
4255 _restrict=
4256 for restrict_keyword in restrict __restrict__ __restrict; do
4257     check_cc <<EOF && _restrict=$restrict_keyword && break
4258 void foo(char * $restrict_keyword p);
4259 EOF
4260 done
4261
4262 check_cc <<EOF && enable pragma_deprecated
4263 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4264 EOF
4265
4266 check_cc <<EOF && enable attribute_packed
4267 struct { int x; } __attribute__((packed)) x;
4268 EOF
4269
4270 check_cc <<EOF && enable attribute_may_alias
4271 union { int x; } __attribute__((may_alias)) x;
4272 EOF
4273
4274 check_cc <<EOF || die "endian test failed"
4275 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4276 EOF
4277 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4278
4279 check_gas() {
4280     log "check_gas using '$as' as AS"
4281     # :vararg is used on aarch64, arm and ppc altivec
4282     check_as <<EOF || return 1
4283 .macro m n, y:vararg=0
4284 \n: .int \y
4285 .endm
4286 m x
4287 EOF
4288     # .altmacro is only used in arm asm
4289     ! enabled arm || check_as <<EOF || return 1
4290 .altmacro
4291 EOF
4292     enable gnu_as
4293     return 0
4294 }
4295
4296 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4297     nogas=:
4298     enabled_any arm aarch64 && nogas=die
4299     enabled_all ppc altivec && nogas=warn
4300     as_noop=-v
4301
4302     case $as_type in
4303         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4304         gcc)  gaspp_as_type=gas ;;
4305         *)    gaspp_as_type=$as_type ;;
4306     esac
4307
4308     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4309
4310     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4311         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4312
4313     if ! check_gas ; then
4314         as=${gas:=$as}
4315         check_gas || \
4316             $nogas "GNU assembler not found, install/update gas-preprocessor"
4317     fi
4318
4319     check_as <<EOF && enable as_func
4320 .func test
4321 .endfunc
4322 EOF
4323 fi
4324
4325 check_inline_asm inline_asm_labels '"1:\n"'
4326
4327 if enabled aarch64; then
4328     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4329     # internal assembler in clang 3.3 does not support this instruction
4330     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4331     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4332
4333     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4334
4335 elif enabled alpha; then
4336
4337     check_cflags -mieee
4338
4339 elif enabled arm; then
4340
4341     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4342     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4343     enabled thumb && check_cflags -mthumb || check_cflags -marm
4344
4345     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4346         enable vfp_args
4347     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4348         enable vfp_args
4349     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4350         case "${cross_prefix:-$cc}" in
4351             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4352             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4353 __asm__ (".eabi_attribute 28, 1");
4354 int main(void) { return 0; }
4355 EOF
4356         esac
4357         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4358     fi
4359
4360     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4361     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4362     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4363     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4364     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4365     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4366
4367     [ $target_os = linux ] || [ $target_os = android ] ||
4368         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4369             $ARCH_EXT_LIST_ARM
4370
4371     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4372
4373     check_as <<EOF && enable as_dn_directive
4374 ra .dn d0.i16
4375 .unreq ra
4376 EOF
4377     check_as <<EOF && enable as_fpu_directive
4378 .fpu neon
4379 EOF
4380
4381     # llvm's integrated assembler supports .object_arch from llvm 3.5
4382     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4383         check_as <<EOF && enable as_object_arch
4384 .object_arch armv4
4385 EOF
4386
4387     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4388
4389 elif enabled mips; then
4390
4391     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4392
4393     # make sure that only an instruction set is enabled
4394     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4395
4396     if enabled mips64; then
4397         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4398             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4399                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4400     else
4401         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4402             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4403                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4404     fi
4405
4406 elif enabled parisc; then
4407
4408     if enabled gcc; then
4409         case $($cc -dumpversion) in
4410             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4411         esac
4412     fi
4413
4414 elif enabled ppc; then
4415
4416     enable local_aligned_8 local_aligned_16 local_aligned_32
4417
4418     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4419     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4420     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4421     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4422
4423     # AltiVec flags: The FSF version of GCC differs from the Apple version
4424     if enabled altivec; then
4425         check_cflags -maltivec -mabi=altivec &&
4426         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4427         check_cflags -faltivec
4428
4429         # check if our compiler supports Motorola AltiVec C API
4430         check_cc <<EOF || disable altivec
4431 $inc_altivec_h
4432 int main(void) {
4433     vector signed int v1 = (vector signed int) { 0 };
4434     vector signed int v2 = (vector signed int) { 1 };
4435     v1 = vec_add(v1, v2);
4436     return 0;
4437 }
4438 EOF
4439
4440         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4441     fi
4442
4443     if enabled vsx; then
4444         check_cflags -mvsx &&
4445         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4446     fi
4447
4448     if enabled power8; then
4449         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4450     fi
4451
4452 elif enabled x86; then
4453
4454     check_builtin rdtsc    intrin.h   "__rdtsc()"
4455     check_builtin mm_empty mmintrin.h "_mm_empty()"
4456
4457     enable local_aligned_8 local_aligned_16 local_aligned_32
4458
4459     # check whether EBP is available on x86
4460     # As 'i' is stored on the stack, this program will crash
4461     # if the base pointer is used to access it because the
4462     # base pointer is cleared in the inline assembly code.
4463     check_exec_crash <<EOF && enable ebp_available
4464 volatile int i=0;
4465 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4466 return i;
4467 EOF
4468
4469     # check whether EBX is available on x86
4470     check_inline_asm ebx_available '""::"b"(0)' &&
4471         check_inline_asm ebx_available '"":::"%ebx"'
4472
4473     # check whether xmm clobbers are supported
4474     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4475
4476     # check whether binutils is new enough to compile SSSE3/MMXEXT
4477     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4478     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4479
4480     probe_x86asm(){
4481         x86asmexe_probe=$1
4482         if check_cmd $x86asmexe_probe -v; then
4483             x86asmexe=$x86asmexe_probe
4484             x86asm_type=nasm
4485             x86asm_debug="-g -F dwarf"
4486             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4487         elif check_cmd $x86asmexe_probe --version; then
4488             x86asmexe=$x86asmexe_probe
4489             x86asm_type=yasm
4490             x86asm_debug="-g dwarf2"
4491             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4492         fi
4493     }
4494
4495     if ! disabled_any asm mmx x86asm; then
4496         for program in $x86asmexe nasm yasm; do
4497             probe_x86asm $program
4498             test -n "$x86asm_type" && break
4499         done
4500         X86ASMFLAGS="-f $objformat"
4501         enabled pic               && append X86ASMFLAGS "-DPIC"
4502         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4503         case "$objformat" in
4504             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4505         esac
4506
4507         check_x86asm "movbe ecx, [5]" && enable x86asm ||
4508             die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4509         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4510         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4511         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4512         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4513         check_x86asm "CPU amdnop"                      || disable cpunop
4514     fi
4515
4516     case "$cpu" in
4517         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4518             disable fast_clz
4519         ;;
4520     esac
4521
4522 fi
4523
4524 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4525
4526 check_ldflags -Wl,--as-needed
4527
4528 if ! disabled network; then
4529     check_func getaddrinfo $network_extralibs
4530     check_func inet_aton $network_extralibs
4531
4532     check_type netdb.h "struct addrinfo"
4533     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4534     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4535     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4536     check_type poll.h "struct pollfd"
4537     check_type netinet/sctp.h "struct sctp_event_subscribe"
4538     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4539     check_type netinet/in.h "struct sockaddr_in6"
4540     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4541     check_type "sys/types.h sys/socket.h" socklen_t
4542
4543     # Prefer arpa/inet.h over winsock2
4544     if check_header arpa/inet.h ; then
4545         check_func closesocket
4546     elif check_header winsock2.h ; then
4547         check_func_headers winsock2.h closesocket -lws2 &&
4548             network_extralibs="-lws2" ||
4549         { check_func_headers winsock2.h closesocket -lws2_32 &&
4550             network_extralibs="-lws2_32"; } || disable winsock2_h network
4551         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4552
4553         check_type ws2tcpip.h socklen_t
4554         check_type ws2tcpip.h "struct addrinfo"
4555         check_type ws2tcpip.h "struct group_source_req"
4556         check_type ws2tcpip.h "struct ip_mreq_source"
4557         check_type ws2tcpip.h "struct ipv6_mreq"
4558         check_type winsock2.h "struct pollfd"
4559         check_struct winsock2.h "struct sockaddr" sa_len
4560         check_type ws2tcpip.h "struct sockaddr_in6"
4561         check_type ws2tcpip.h "struct sockaddr_storage"
4562     else
4563         disable network
4564     fi
4565 fi
4566
4567 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4568 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4569 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4570 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4571
4572 case "$custom_allocator" in
4573     jemalloc)
4574         # jemalloc by default does not use a prefix
4575         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4576     ;;
4577     tcmalloc)
4578         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4579         malloc_prefix=tc_
4580     ;;
4581 esac
4582
4583 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4584 check_func  ${malloc_prefix}memalign            && enable memalign
4585 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4586
4587 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4588     { check_lib clock_gettime time.h clock_gettime ||
4589       check_lib clock_gettime time.h clock_gettime -lrt; }
4590
4591 check_func  fcntl
4592 check_func  fork
4593 check_func  gethrtime
4594 check_func  getopt
4595 check_func  getrusage
4596 check_func  gettimeofday
4597 check_func  gmtime_r
4598 check_func  isatty
4599 check_func  localtime_r
4600 check_func  mach_absolute_time
4601 check_func  mkstemp
4602 check_func  mmap
4603 check_func  mprotect
4604 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4605 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4606 check_func  sched_getaffinity
4607 check_func  setrlimit
4608 check_func  strerror_r
4609 check_func  sysconf
4610 check_func  sysctl
4611 check_func  usleep
4612
4613 check_func_headers io.h setmode
4614 check_func_headers stdlib.h getenv
4615
4616 check_func_headers windows.h GetProcessAffinityMask
4617 check_func_headers windows.h GetProcessTimes
4618 check_func_headers windows.h GetSystemTimeAsFileTime
4619 check_func_headers windows.h LoadLibrary
4620 check_func_headers windows.h MapViewOfFile
4621 check_func_headers windows.h SetConsoleTextAttribute
4622 check_func_headers windows.h Sleep
4623 check_func_headers windows.h VirtualAlloc
4624 check_struct windows.h "CONDITION_VARIABLE" Ptr
4625
4626 check_header d3d11.h
4627 check_header direct.h
4628 check_header dlfcn.h
4629 check_header dxva.h
4630 check_header dxva2api.h
4631 check_header io.h
4632 check_header mach/mach_time.h
4633 check_header malloc.h
4634 check_header poll.h
4635 check_header sys/mman.h
4636 check_header sys/param.h
4637 check_header sys/resource.h
4638 check_header sys/select.h
4639 check_header sys/time.h
4640 check_header sys/un.h
4641 check_header unistd.h
4642 check_header valgrind/valgrind.h
4643 check_header VideoDecodeAcceleration/VDADecoder.h
4644 check_header windows.h
4645
4646 # it seems there are versions of clang in some distros that try to use the
4647 # gcc headers, which explodes for stdatomic
4648 # so we also check that atomics actually work here
4649 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4650
4651 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4652 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4653 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4654
4655 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4656
4657 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4658 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4659 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4660
4661 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4662 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4663 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4664 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4665 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4666 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4667 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4668 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4669
4670 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4671
4672 if ! disabled w32threads && ! enabled pthreads; then
4673     check_lib w32threads "windows.h process.h" _beginthreadex
4674 fi
4675
4676 # check for some common methods of building with pthread support
4677 # do this before the optional library checks as some of them require pthreads
4678 if ! disabled pthreads && ! enabled w32threads; then
4679     if check_lib pthreads pthread.h pthread_join -pthread; then
4680         add_cflags -pthread
4681     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4682         add_cflags -pthreads
4683     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4684         :
4685     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4686         :
4687     elif check_func pthread_join; then
4688         enable pthreads
4689     fi
4690 fi
4691
4692 enabled pthreads &&
4693     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4694
4695 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4696 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4697
4698 # On some systems dynamic loading requires no extra linker flags
4699 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4700
4701 check_lib libm math.h sin -lm
4702
4703 atan2f_args=2
4704 ldexpf_args=2
4705 powf_args=2
4706
4707 for func in $MATH_FUNCS; do
4708     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4709 done
4710
4711 # these are off by default, so fail if requested and not available
4712 enabled avisynth          && require_header avisynth/avisynth_c.h
4713 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4714 enabled cuda              && require cuda cuda.h cuInit -lcuda
4715 enabled frei0r            && require_header frei0r.h
4716 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4717 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4718 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4719 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4720 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4721 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4722 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4723 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4724 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4725                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4726                                done || die "ERROR: libgsm not found"; }
4727 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4728 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4729 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4730 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4731 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4732 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4733 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4734 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4735 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4736 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4737 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4738                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4739 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4740 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4741 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4742 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4743 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4744 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4745 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4746 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4747 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4748 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4749 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4750 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4751                              { enabled libvpx_vp8_decoder &&
4752                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4753                                enabled libvpx_vp8_encoder &&
4754                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4755                                enabled libvpx_vp9_decoder &&
4756                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4757                                enabled libvpx_vp9_encoder &&
4758                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4759                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4760                                    die "libvpx enabled but no supported decoders/encoders found"
4761                              }
4762 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4763 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4764 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4765                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4766                              { check_cpp_condition x264.h "X264_MPEG2" &&
4767                                enable libx262; }
4768 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4769                              require_cpp_condition x265.h "X265_BUILD >= 57"
4770 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4771 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4772 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4773                                { ! enabled cross_compile &&
4774                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4775                                  add_ldflags -L/opt/vc/lib/ &&
4776                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4777                                die "ERROR: mmal not found" &&
4778                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4779 enabled omx               && require_header OMX_Core.h
4780 enabled omx_rpi           && { check_header OMX_Core.h ||
4781                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4782                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4783 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4784                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4785                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4786                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4787                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4788                                die "ERROR: openssl not found"; }
4789
4790 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4791
4792 if enabled nvenc; then
4793     require_header nvEncodeAPI.h
4794     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4795 fi
4796
4797 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4798 if enabled avplay; then
4799     CFLAGS_SAVE=$CFLAGS
4800     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4801     sdl_cflags=$pkg_cflags
4802     CFLAGS=$CFLAGS_SAVE
4803 fi
4804
4805 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4806 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4807
4808 check_header linux/fb.h
4809 check_header linux/videodev2.h
4810 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4811
4812 check_header AVFoundation/AVFoundation.h
4813
4814 check_header sys/videoio.h
4815
4816 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4817 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4818 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4819 # w32api 3.12 had it defined wrong
4820 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4821
4822 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4823 { check_header dev/bktr/ioctl_meteor.h &&
4824   check_header dev/bktr/ioctl_bt848.h; } ||
4825 { check_header machine/ioctl_meteor.h &&
4826   check_header machine/ioctl_bt848.h; } ||
4827 { check_header dev/video/meteor/ioctl_meteor.h &&
4828   check_header dev/video/bktr/ioctl_bt848.h; } ||
4829 check_header dev/ic/bt8xx.h
4830
4831 check_header sys/soundcard.h
4832 check_header&nb