arm: Check for the .arch directive in configure
[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_sanitized(){
481     var=$1
482     shift
483     eval $(sanitize_var_name "$var")='$*'
484 }
485
486 get_sanitized(){
487     eval echo \$$(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_sanitized(){
526     for var; do
527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 disable_sanitized(){
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_sanitized $header
941     check_cpp "$@" <<EOF && enable_sanitized $header
942 #include <$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_sanitized $headers
986 }
987
988 check_cpp_condition(){
989     log check_cpp_condition "$@"
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=$2
1082     shift 2
1083     disable_sanitized "$type"
1084     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1085 }
1086
1087 check_struct(){
1088     log check_struct "$@"
1089     headers=$1
1090     struct=$2
1091     member=$3
1092     shift 3
1093     disable_sanitized "${struct}_${member}"
1094     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1095         enable_sanitized "${struct}_${member}"
1096 }
1097
1098 check_builtin(){
1099     log check_builtin "$@"
1100     name=$1
1101     headers=$2
1102     builtin=$3
1103     shift 3
1104     disable "$name"
1105     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1106 }
1107
1108 check_compile_assert(){
1109     log check_compile_assert "$@"
1110     name=$1
1111     headers=$2
1112     condition=$3
1113     shift 3
1114     disable "$name"
1115     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1116 }
1117
1118 require(){
1119     log require "$@"
1120     name_version="$1"
1121     name="${1%% *}"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1126 }
1127
1128 require_header(){
1129     log require "$@"
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_arch_directive
1665     as_dn_directive
1666     as_fpu_directive
1667     as_func
1668     as_object_arch
1669     asm_mod_q
1670     attribute_may_alias
1671     attribute_packed
1672     blocks_extension
1673     ebp_available
1674     ebx_available
1675     gnu_as
1676     ibm_asm
1677     inline_asm_labels
1678     pragma_deprecated
1679     symver_asm_label
1680     symver_gnu_asm
1681     vfp_args
1682     xform_asm
1683     xmm_clobbers
1684 "
1685
1686 TYPES_LIST="
1687     CONDITION_VARIABLE_Ptr
1688     socklen_t
1689     struct_addrinfo
1690     struct_group_source_req
1691     struct_ip_mreq_source
1692     struct_ipv6_mreq
1693     struct_pollfd
1694     struct_rusage_ru_maxrss
1695     struct_sockaddr_in6
1696     struct_sockaddr_sa_len
1697     struct_sockaddr_storage
1698     struct_v4l2_frmivalenum_discrete
1699 "
1700
1701 HAVE_LIST="
1702     $ARCH_EXT_LIST
1703     $(add_suffix _external $ARCH_EXT_LIST)
1704     $(add_suffix _inline   $ARCH_EXT_LIST)
1705     $ARCH_FEATURES
1706     $BUILTIN_LIST
1707     $HAVE_LIST_CMDLINE
1708     $HAVE_LIST_PUB
1709     $HEADERS_LIST
1710     $INTRINSICS_LIST
1711     $MATH_FUNCS
1712     $SYSTEM_FUNCS
1713     $THREADS_LIST
1714     $TOOLCHAIN_FEATURES
1715     $TYPES_LIST
1716     dos_paths
1717     dxva2_lib
1718     libc_msvcrt
1719     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1720     sdl
1721     section_data_rel_ro
1722     threads
1723     vaapi_drm
1724     vaapi_x11
1725     vdpau_x11
1726 "
1727
1728 # options emitted with CONFIG_ prefix but not available on the command line
1729 CONFIG_EXTRA="
1730     aandcttables
1731     ac3dsp
1732     adts_header
1733     audio_frame_queue
1734     audiodsp
1735     blockdsp
1736     bswapdsp
1737     cabac
1738     dirac_parse
1739     dvprofile
1740     faandct
1741     faanidct
1742     fdctdsp
1743     flacdsp
1744     fmtconvert
1745     g722dsp
1746     gmp
1747     golomb
1748     gplv3
1749     h263dsp
1750     h264chroma
1751     h264dsp
1752     h264parse
1753     h264pred
1754     h264qpel
1755     hevc_ps
1756     hpeldsp
1757     huffman
1758     huffyuvdsp
1759     huffyuvencdsp
1760     idctdsp
1761     iirfilter
1762     imdct15
1763     intrax8
1764     iso_media
1765     ividsp
1766     jpegtables
1767     lgplv3
1768     libx262
1769     libxcb_shape
1770     lpc
1771     lzf
1772     me_cmp
1773     mpeg_er
1774     mpegaudio
1775     mpegaudiodsp
1776     mpegaudioheader
1777     mpegvideo
1778     mpegvideoenc
1779     mss34dsp
1780     pixblockdsp
1781     qpeldsp
1782     qsv
1783     qsvdec
1784     qsvenc
1785     rangecoder
1786     riffdec
1787     riffenc
1788     rtpdec
1789     rtpenc_chain
1790     rv34dsp
1791     sinewin
1792     snappy
1793     srtp
1794     startcode
1795     texturedsp
1796     texturedspenc
1797     tpeldsp
1798     vaapi_encode
1799     vc1dsp
1800     videodsp
1801     vp3dsp
1802     vp56dsp
1803     vp8dsp
1804     wma_freqs
1805     wmv2dsp
1806 "
1807
1808 CMDLINE_SELECT="
1809     $ARCH_EXT_LIST
1810     $CONFIG_LIST
1811     $HAVE_LIST_CMDLINE
1812     $THREADS_LIST
1813     asm
1814     cross_compile
1815     debug
1816     extra_warnings
1817     logging
1818     lto
1819     optimizations
1820     rpath
1821 "
1822
1823 PATHS_LIST="
1824     bindir
1825     datadir
1826     docdir
1827     incdir
1828     libdir
1829     mandir
1830     prefix
1831     shlibdir
1832 "
1833
1834 CMDLINE_SET="
1835     $PATHS_LIST
1836     ar
1837     arch
1838     as
1839     cc
1840     objcc
1841     cpu
1842     cross_prefix
1843     custom_allocator
1844     dep_cc
1845     env
1846     extra_version
1847     host_cc
1848     host_cflags
1849     host_extralibs
1850     host_ld
1851     host_ldflags
1852     host_os
1853     ignore_tests
1854     ld
1855     logfile
1856     malloc_prefix
1857     nm
1858     optflags
1859     pkg_config
1860     pkg_config_flags
1861     random_seed
1862     samples
1863     sysinclude
1864     sysroot
1865     target_exec
1866     target_os
1867     target_path
1868     target_samples
1869     toolchain
1870     x86asmexe
1871 "
1872
1873 CMDLINE_APPEND="
1874     extra_cflags
1875     extra_objcflags
1876     host_cppflags
1877 "
1878
1879 # code dependency declarations
1880
1881 # architecture extensions
1882
1883 armv5te_deps="arm"
1884 armv6_deps="arm"
1885 armv6t2_deps="arm"
1886 armv8_deps="aarch64"
1887 neon_deps_any="aarch64 arm"
1888 intrinsics_neon_deps="neon"
1889 vfp_deps_any="aarch64 arm"
1890 vfpv3_deps="vfp"
1891
1892 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1893
1894 altivec_deps="ppc"
1895 ppc4xx_deps="ppc"
1896 vsx_deps="altivec"
1897 power8_deps="vsx"
1898
1899 cpunop_deps="i686"
1900 x86_64_select="i686"
1901 x86_64_suggest="fast_cmov"
1902
1903 amd3dnow_deps="mmx"
1904 amd3dnowext_deps="amd3dnow"
1905 i686_deps="x86"
1906 mmx_deps="x86"
1907 mmxext_deps="mmx"
1908 sse_deps="mmxext"
1909 sse2_deps="sse"
1910 sse3_deps="sse2"
1911 ssse3_deps="sse3"
1912 sse4_deps="ssse3"
1913 sse42_deps="sse4"
1914 avx_deps="sse42"
1915 xop_deps="avx"
1916 fma3_deps="avx"
1917 fma4_deps="avx"
1918 avx2_deps="avx"
1919
1920 mmx_external_deps="x86asm"
1921 mmx_inline_deps="inline_asm"
1922 mmx_suggest="mmx_external mmx_inline"
1923
1924 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1925     eval dep=\$${ext}_deps
1926     eval ${ext}_external_deps='"${dep}_external"'
1927     eval ${ext}_inline_deps='"${dep}_inline"'
1928     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1929 done
1930
1931 aligned_stack_if_any="aarch64 ppc x86"
1932 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1933 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1934 fast_unaligned_if_any="aarch64 ppc x86"
1935 simd_align_16_if_any="altivec neon sse"
1936 simd_align_32_if_any="avx"
1937
1938 # system capabilities
1939 symver_if_any="symver_asm_label symver_gnu_asm"
1940 valgrind_backtrace_conflict="optimizations"
1941 valgrind_backtrace_deps="valgrind_valgrind_h"
1942
1943 # threading support
1944 atomics_gcc_if="sync_val_compare_and_swap"
1945 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1946 atomics_win32_if="MemoryBarrier"
1947 atomics_native_if_any="$ATOMICS_LIST"
1948 w32threads_deps="atomics_native"
1949 threads_if_any="$THREADS_LIST"
1950
1951 # subsystems
1952 dct_select="rdft"
1953 dirac_parse_select="golomb"
1954 error_resilience_select="me_cmp"
1955 faandct_deps="faan fdctdsp"
1956 faanidct_deps="faan idctdsp"
1957 h264dsp_select="startcode"
1958 hevc_ps_select="golomb"
1959 intrax8_select="blockdsp idctdsp"
1960 mdct_select="fft"
1961 rdft_select="fft"
1962 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1963 mpeg_er_select="error_resilience"
1964 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1965 mpegaudiodsp_select="dct"
1966 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1967 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1968 vc1dsp_select="h264chroma qpeldsp startcode"
1969
1970 # decoders / encoders
1971 aac_decoder_select="adts_header imdct15 mdct sinewin"
1972 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1973 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1974 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1975 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1976 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1977 adpcm_g722_decoder_select="g722dsp"
1978 adpcm_g722_encoder_select="g722dsp"
1979 aic_decoder_select="golomb idctdsp"
1980 alac_encoder_select="lpc"
1981 als_decoder_select="bswapdsp"
1982 amrnb_decoder_select="lsp"
1983 amrwb_decoder_select="lsp"
1984 amv_decoder_select="sp5x_decoder"
1985 ape_decoder_select="bswapdsp"
1986 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1987 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1988 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1989 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1990 atrac1_decoder_select="mdct sinewin"
1991 atrac3_decoder_select="mdct"
1992 atrac3p_decoder_select="mdct sinewin"
1993 bink_decoder_select="blockdsp hpeldsp"
1994 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1995 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1996 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1997 cllc_decoder_select="bswapdsp"
1998 comfortnoise_encoder_select="lpc"
1999 cook_decoder_select="audiodsp mdct sinewin"
2000 cscd_decoder_select="lzo"
2001 cscd_decoder_suggest="zlib"
2002 dca_decoder_select="fmtconvert mdct"
2003 dds_decoder_select="texturedsp"
2004 dnxhd_decoder_select="blockdsp idctdsp"
2005 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2006 dvvideo_decoder_select="dvprofile idctdsp"
2007 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2008 dxa_decoder_deps="zlib"
2009 dxv_decoder_select="lzf texturedsp"
2010 eac3_decoder_select="ac3_decoder"
2011 eac3_encoder_select="ac3_encoder"
2012 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2013 eatgq_decoder_select="aandcttables idctdsp"
2014 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2015 exr_decoder_deps="zlib"
2016 ffv1_decoder_select="rangecoder"
2017 ffv1_encoder_select="rangecoder"
2018 ffvhuff_decoder_select="huffyuv_decoder"
2019 ffvhuff_encoder_select="huffyuv_encoder"
2020 fic_decoder_select="golomb"
2021 flac_decoder_select="flacdsp"
2022 flac_encoder_select="bswapdsp flacdsp lpc"
2023 flashsv_decoder_deps="zlib"
2024 flashsv_encoder_deps="zlib"
2025 flashsv2_decoder_deps="zlib"
2026 flv_decoder_select="h263_decoder"
2027 flv_encoder_select="h263_encoder"
2028 fourxm_decoder_select="blockdsp bswapdsp"
2029 fraps_decoder_select="bswapdsp huffman"
2030 g2m_decoder_deps="zlib"
2031 g2m_decoder_select="blockdsp idctdsp jpegtables"
2032 h261_decoder_select="mpeg_er mpegvideo"
2033 h261_encoder_select="aandcttables mpegvideoenc"
2034 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2035 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2036 h263i_decoder_select="h263_decoder"
2037 h263p_encoder_select="h263_encoder"
2038 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2039 h264_decoder_suggest="error_resilience"
2040 hap_decoder_select="snappy texturedsp"
2041 hap_encoder_deps="libsnappy"
2042 hap_encoder_select="texturedspenc"
2043 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2044 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2045 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2046 iac_decoder_select="imc_decoder"
2047 imc_decoder_select="bswapdsp fft mdct sinewin"
2048 indeo3_decoder_select="hpeldsp"
2049 indeo4_decoder_select="ividsp"
2050 indeo5_decoder_select="ividsp"
2051 interplay_video_decoder_select="hpeldsp"
2052 jpegls_decoder_select="mjpeg_decoder"
2053 jv_decoder_select="blockdsp"
2054 lagarith_decoder_select="huffyuvdsp"
2055 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2056 magicyuv_decoder_select="huffyuvdsp"
2057 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2058 metasound_decoder_select="lsp mdct sinewin"
2059 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2060 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2061 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2062 mjpegb_decoder_select="mjpeg_decoder"
2063 mlp_decoder_select="mlp_parser"
2064 motionpixels_decoder_select="bswapdsp"
2065 mp1_decoder_select="mpegaudio"
2066 mp1float_decoder_select="mpegaudio"
2067 mp2_decoder_select="mpegaudio"
2068 mp2float_decoder_select="mpegaudio"
2069 mp3_decoder_select="mpegaudio"
2070 mp3adu_decoder_select="mpegaudio"
2071 mp3adufloat_decoder_select="mpegaudio"
2072 mp3float_decoder_select="mpegaudio"
2073 mp3on4_decoder_select="mpegaudio"
2074 mp3on4float_decoder_select="mpegaudio"
2075 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2076 mpc8_decoder_select="mpegaudiodsp"
2077 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2078 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2079 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2080 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2081 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2082 mpeg4_encoder_select="h263_encoder"
2083 msa1_decoder_select="mss34dsp"
2084 msmpeg4v1_decoder_select="h263_decoder"
2085 msmpeg4v2_decoder_select="h263_decoder"
2086 msmpeg4v2_encoder_select="h263_encoder"
2087 msmpeg4v3_decoder_select="h263_decoder"
2088 msmpeg4v3_encoder_select="h263_encoder"
2089 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2090 mts2_decoder_select="mss34dsp"
2091 mxpeg_decoder_select="mjpeg_decoder"
2092 nellymoser_decoder_select="mdct sinewin"
2093 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2094 nuv_decoder_select="idctdsp lzo"
2095 on2avc_decoder_select="mdct"
2096 opus_decoder_deps="avresample"
2097 opus_decoder_select="imdct15"
2098 png_decoder_deps="zlib"
2099 png_encoder_deps="zlib"
2100 png_encoder_select="huffyuvencdsp"
2101 prores_decoder_select="idctdsp"
2102 prores_encoder_select="fdctdsp"
2103 qcelp_decoder_select="lsp"
2104 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2105 ra_144_encoder_select="audio_frame_queue lpc"
2106 ralf_decoder_select="golomb"
2107 rscc_decoder_deps="zlib"
2108 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2109 rv10_encoder_select="h263_encoder"
2110 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2111 rv20_encoder_select="h263_encoder"
2112 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2113 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2114 screenpresso_decoder_deps="zlib"
2115 sipr_decoder_select="lsp"
2116 sp5x_decoder_select="mjpeg_decoder"
2117 svq1_decoder_select="hpeldsp"
2118 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2119 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2120 svq3_decoder_suggest="zlib"
2121 tak_decoder_select="audiodsp"
2122 tdsc_decoder_deps="zlib"
2123 tdsc_decoder_select="mjpeg_decoder"
2124 theora_decoder_select="vp3_decoder"
2125 thp_decoder_select="mjpeg_decoder"
2126 tiff_decoder_suggest="zlib"
2127 tiff_encoder_suggest="zlib"
2128 truehd_decoder_select="mlp_decoder"
2129 truemotion2_decoder_select="bswapdsp"
2130 truespeech_decoder_select="bswapdsp"
2131 tscc_decoder_deps="zlib"
2132 txd_decoder_select="texturedsp"
2133 twinvq_decoder_select="mdct lsp sinewin"
2134 utvideo_decoder_select="bswapdsp huffyuvdsp"
2135 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2136 vble_decoder_select="huffyuvdsp"
2137 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2138 vc1image_decoder_select="vc1_decoder"
2139 vorbis_decoder_select="mdct"
2140 vorbis_encoder_select="mdct"
2141 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2142 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2143 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2144 vp6a_decoder_select="vp6_decoder"
2145 vp6f_decoder_select="vp6_decoder"
2146 vp7_decoder_select="h264pred videodsp vp8dsp"
2147 vp8_decoder_select="h264pred videodsp vp8dsp"
2148 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2149 webp_decoder_select="vp8_decoder"
2150 wmapro_decoder_select="mdct sinewin wma_freqs"
2151 wmav1_decoder_select="mdct sinewin wma_freqs"
2152 wmav1_encoder_select="mdct sinewin wma_freqs"
2153 wmav2_decoder_select="mdct sinewin wma_freqs"
2154 wmav2_encoder_select="mdct sinewin wma_freqs"
2155 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2156 wmv1_decoder_select="h263_decoder"
2157 wmv1_encoder_select="h263_encoder"
2158 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2159 wmv2_encoder_select="h263_encoder wmv2dsp"
2160 wmv3_decoder_select="vc1_decoder"
2161 wmv3image_decoder_select="wmv3_decoder"
2162 zerocodec_decoder_deps="zlib"
2163 zlib_decoder_deps="zlib"
2164 zlib_encoder_deps="zlib"
2165 zmbv_decoder_deps="zlib"
2166 zmbv_encoder_deps="zlib"
2167
2168 # hardware accelerators
2169 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2170 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2171 dxva2_lib_deps="dxva2"
2172 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2173 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2174
2175 h263_vaapi_hwaccel_deps="vaapi"
2176 h263_vaapi_hwaccel_select="h263_decoder"
2177 h264_d3d11va_hwaccel_deps="d3d11va"
2178 h264_d3d11va_hwaccel_select="h264_decoder"
2179 h264_dxva2_hwaccel_deps="dxva2"
2180 h264_dxva2_hwaccel_select="h264_decoder"
2181 h264_mmal_hwaccel_deps="mmal"
2182 h264_qsv_hwaccel_deps="libmfx"
2183 h264_vaapi_hwaccel_deps="vaapi"
2184 h264_vaapi_hwaccel_select="h264_decoder"
2185 h264_vda_hwaccel_deps="vda"
2186 h264_vda_hwaccel_select="h264_decoder"
2187 h264_vda_old_hwaccel_deps="vda"
2188 h264_vda_old_hwaccel_select="h264_decoder"
2189 h264_vdpau_hwaccel_deps="vdpau"
2190 h264_vdpau_hwaccel_select="h264_decoder"
2191 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2192 hevc_d3d11va_hwaccel_select="hevc_decoder"
2193 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2194 hevc_dxva2_hwaccel_select="hevc_decoder"
2195 hevc_qsv_hwaccel_deps="libmfx"
2196 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2197 hevc_vaapi_hwaccel_select="hevc_decoder"
2198 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2199 hevc_vdpau_hwaccel_select="hevc_decoder"
2200 mpeg1_vdpau_hwaccel_deps="vdpau"
2201 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2202 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2203 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2204 mpeg2_dxva2_hwaccel_deps="dxva2"
2205 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2206 mpeg2_mmal_hwaccel_deps="mmal"
2207 mpeg2_qsv_hwaccel_deps="libmfx"
2208 mpeg2_vaapi_hwaccel_deps="vaapi"
2209 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2210 mpeg2_vdpau_hwaccel_deps="vdpau"
2211 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2212 mpeg4_vaapi_hwaccel_deps="vaapi"
2213 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2214 mpeg4_vdpau_hwaccel_deps="vdpau"
2215 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2216 vc1_d3d11va_hwaccel_deps="d3d11va"
2217 vc1_d3d11va_hwaccel_select="vc1_decoder"
2218 vc1_dxva2_hwaccel_deps="dxva2"
2219 vc1_dxva2_hwaccel_select="vc1_decoder"
2220 vc1_mmal_hwaccel_deps="mmal"
2221 vc1_qsv_hwaccel_deps="libmfx"
2222 vc1_vaapi_hwaccel_deps="vaapi"
2223 vc1_vaapi_hwaccel_select="vc1_decoder"
2224 vc1_vdpau_hwaccel_deps="vdpau"
2225 vc1_vdpau_hwaccel_select="vc1_decoder"
2226 vp8_qsv_hwaccel_deps="libmfx"
2227 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2228 vp8_vaapi_hwaccel_select="vp8_decoder"
2229 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2230 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2231 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2232 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2233
2234 # hardware-accelerated codecs
2235 nvenc_deps_any="libdl LoadLibrary"
2236 omx_deps="libdl pthreads"
2237 omx_rpi_select="omx"
2238 qsvdec_select="qsv"
2239 qsvenc_select="qsv"
2240 vaapi_encode_deps="vaapi"
2241
2242 hwupload_cuda_filter_deps="cuda"
2243 scale_npp_filter_deps="cuda libnpp"
2244
2245 h264_mmal_decoder_deps="mmal"
2246 h264_nvenc_encoder_deps="nvenc"
2247 h264_omx_encoder_deps="omx"
2248 h264_qsv_decoder_deps="libmfx"
2249 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2250 h264_qsv_encoder_deps="libmfx"
2251 h264_qsv_encoder_select="qsvenc"
2252 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2253 h264_vaapi_encoder_select="vaapi_encode golomb"
2254 hevc_nvenc_encoder_deps="nvenc"
2255 hevc_qsv_decoder_deps="libmfx"
2256 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2257 hevc_qsv_encoder_deps="libmfx"
2258 hevc_qsv_encoder_select="hevc_ps qsvenc"
2259 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2260 hevc_vaapi_encoder_select="vaapi_encode golomb"
2261 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2262 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2263 mpeg2_mmal_decoder_deps="mmal"
2264 mpeg2_qsv_decoder_deps="libmfx"
2265 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2266 mpeg2_qsv_encoder_deps="libmfx"
2267 mpeg2_qsv_encoder_select="qsvenc"
2268 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2269 mpeg2_vaapi_encoder_select="vaapi_encode"
2270 mpeg4_omx_encoder_deps="omx"
2271 vc1_mmal_decoder_deps="mmal"
2272 vc1_qsv_decoder_deps="libmfx"
2273 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2274 vp8_qsv_decoder_deps="libmfx"
2275 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2276 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2277 vp8_vaapi_encoder_select="vaapi_encode"
2278 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2279 vp9_vaapi_encoder_select="vaapi_encode"
2280
2281 nvenc_h264_encoder_select="h264_nvenc_encoder"
2282 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2283
2284 # parsers
2285 aac_parser_select="adts_header"
2286 h264_parser_select="golomb h264dsp h264parse"
2287 hevc_parser_select="hevc_ps"
2288 mpegaudio_parser_select="mpegaudioheader"
2289 mpegvideo_parser_select="mpegvideo"
2290 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2291 vc1_parser_select="vc1dsp"
2292
2293 # bitstream_filters
2294 aac_adtstoasc_bsf_select="adts_header"
2295 mjpeg2jpeg_bsf_select="jpegtables"
2296
2297 # external libraries
2298 avisynth_deps="LoadLibrary"
2299 avxsynth_deps="libdl"
2300 avisynth_demuxer_deps_any="avisynth avxsynth"
2301 avisynth_demuxer_select="riffdec"
2302 libdcadec_decoder_deps="libdcadec"
2303 libfaac_encoder_deps="libfaac"
2304 libfaac_encoder_select="audio_frame_queue"
2305 libfdk_aac_decoder_deps="libfdk_aac"
2306 libfdk_aac_encoder_deps="libfdk_aac"
2307 libfdk_aac_encoder_select="audio_frame_queue"
2308 libgsm_decoder_deps="libgsm"
2309 libgsm_encoder_deps="libgsm"
2310 libgsm_ms_decoder_deps="libgsm"
2311 libgsm_ms_encoder_deps="libgsm"
2312 libilbc_decoder_deps="libilbc"
2313 libilbc_encoder_deps="libilbc"
2314 libkvazaar_encoder_deps="libkvazaar"
2315 libmp3lame_encoder_deps="libmp3lame"
2316 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2317 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2318 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2319 libopencore_amrnb_encoder_select="audio_frame_queue"
2320 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2321 libopenh264_decoder_deps="libopenh264"
2322 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2323 libopenh264_encoder_deps="libopenh264"
2324 libopenjpeg_decoder_deps="libopenjpeg"
2325 libopenjpeg_encoder_deps="libopenjpeg"
2326 libopus_decoder_deps="libopus"
2327 libopus_encoder_deps="libopus"
2328 libopus_encoder_select="audio_frame_queue"
2329 libschroedinger_decoder_deps="libschroedinger"
2330 libschroedinger_encoder_deps="libschroedinger"
2331 libspeex_decoder_deps="libspeex"
2332 libspeex_encoder_deps="libspeex"
2333 libspeex_encoder_select="audio_frame_queue"
2334 libtheora_encoder_deps="libtheora"
2335 libtwolame_encoder_deps="libtwolame"
2336 libvo_aacenc_encoder_deps="libvo_aacenc"
2337 libvo_aacenc_encoder_select="audio_frame_queue"
2338 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2339 libvorbis_encoder_deps="libvorbis"
2340 libvorbis_encoder_select="audio_frame_queue"
2341 libvpx_vp8_decoder_deps="libvpx"
2342 libvpx_vp8_encoder_deps="libvpx"
2343 libvpx_vp9_decoder_deps="libvpx"
2344 libvpx_vp9_encoder_deps="libvpx"
2345 libwavpack_encoder_deps="libwavpack"
2346 libwavpack_encoder_select="audio_frame_queue"
2347 libwebp_encoder_deps="libwebp"
2348 libx262_encoder_deps="libx262"
2349 libx264_encoder_deps="libx264"
2350 libx265_encoder_deps="libx265"
2351 libxavs_encoder_deps="libxavs"
2352 libxvid_encoder_deps="libxvid mkstemp"
2353
2354 # demuxers / muxers
2355 ac3_demuxer_select="ac3_parser"
2356 asf_demuxer_select="riffdec"
2357 asf_muxer_select="riffenc"
2358 asf_stream_muxer_select="asf_muxer"
2359 avi_demuxer_select="iso_media riffdec"
2360 avi_muxer_select="riffenc"
2361 caf_demuxer_select="iso_media riffdec"
2362 dash_muxer_select="mp4_muxer"
2363 dirac_demuxer_select="dirac_parser"
2364 dv_demuxer_select="dvprofile"
2365 dv_muxer_select="dvprofile"
2366 dxa_demuxer_select="riffdec"
2367 eac3_demuxer_select="ac3_parser"
2368 f4v_muxer_select="mov_muxer"
2369 flac_demuxer_select="flac_parser"
2370 hds_muxer_select="flv_muxer"
2371 hls_muxer_select="mpegts_muxer"
2372 ipod_muxer_select="mov_muxer"
2373 ismv_muxer_select="mov_muxer"
2374 matroska_audio_muxer_select="matroska_muxer"
2375 matroska_demuxer_select="iso_media riffdec"
2376 matroska_demuxer_suggest="bzlib lzo zlib"
2377 matroska_muxer_select="iso_media riffenc"
2378 mmf_muxer_select="riffenc"
2379 mov_demuxer_select="iso_media riffdec"
2380 mov_demuxer_suggest="zlib"
2381 mov_muxer_select="iso_media riffenc rtpenc_chain"
2382 mp3_demuxer_select="mpegaudio_parser"
2383 mp3_muxer_select="mpegaudioheader"
2384 mp4_muxer_select="mov_muxer"
2385 mpegts_demuxer_select="iso_media"
2386 mpegts_muxer_select="adts_muxer latm_muxer"
2387 mpegtsraw_demuxer_select="mpegts_demuxer"
2388 mxf_d10_muxer_select="mxf_muxer"
2389 nut_muxer_select="riffenc"
2390 nuv_demuxer_select="riffdec"
2391 oga_muxer_select="ogg_muxer"
2392 ogg_demuxer_select="dirac_parse"
2393 opus_muxer_select="ogg_muxer"
2394 psp_muxer_select="mov_muxer"
2395 rtp_demuxer_select="sdp_demuxer"
2396 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2397 rtsp_demuxer_select="http_protocol rtpdec"
2398 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2399 sap_demuxer_select="sdp_demuxer"
2400 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2401 sdp_demuxer_select="rtpdec"
2402 smoothstreaming_muxer_select="ismv_muxer"
2403 spdif_demuxer_select="adts_header"
2404 spdif_muxer_select="adts_header"
2405 spx_muxer_select="ogg_muxer"
2406 swf_demuxer_suggest="zlib"
2407 tak_demuxer_select="tak_parser"
2408 tg2_muxer_select="mov_muxer"
2409 tgp_muxer_select="mov_muxer"
2410 w64_demuxer_select="wav_demuxer"
2411 wav_demuxer_select="riffdec"
2412 wav_muxer_select="riffenc"
2413 webm_muxer_select="iso_media riffenc"
2414 wtv_demuxer_select="mpegts_demuxer riffdec"
2415 xmv_demuxer_select="riffdec"
2416 xwma_demuxer_select="riffdec"
2417
2418 # indevs / outdevs
2419 alsa_indev_deps="alsa"
2420 alsa_outdev_deps="alsa"
2421 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2422 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2423 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2424 dv1394_indev_deps="dv1394"
2425 dv1394_indev_select="dv_demuxer"
2426 fbdev_indev_deps="linux_fb_h"
2427 jack_indev_deps="libjack"
2428 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2429 libcdio_indev_deps="libcdio"
2430 libdc1394_indev_deps="libdc1394"
2431 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2432 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2433 pulse_indev_deps="libpulse"
2434 sndio_indev_deps="sndio"
2435 sndio_outdev_deps="sndio"
2436 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2437 vfwcap_indev_deps="vfw32 vfwcap_defines"
2438 xcbgrab_indev_deps="libxcb libxcb_shape"
2439 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2440
2441 # protocols
2442 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2443 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2444 ffrtmpcrypt_protocol_select="tcp_protocol"
2445 ffrtmphttp_protocol_conflict="librtmp_protocol"
2446 ffrtmphttp_protocol_select="http_protocol"
2447 gopher_protocol_select="network"
2448 http_protocol_select="tcp_protocol"
2449 httpproxy_protocol_select="tcp_protocol"
2450 https_protocol_select="tls_protocol"
2451 icecast_protocol_select="http_protocol"
2452 librtmp_protocol_deps="librtmp"
2453 librtmpe_protocol_deps="librtmp"
2454 librtmps_protocol_deps="librtmp"
2455 librtmpt_protocol_deps="librtmp"
2456 librtmpte_protocol_deps="librtmp"
2457 mmsh_protocol_select="http_protocol"
2458 mmst_protocol_select="network"
2459 rtmp_protocol_conflict="librtmp_protocol"
2460 rtmp_protocol_select="tcp_protocol"
2461 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2462 rtmps_protocol_conflict="librtmp_protocol"
2463 rtmps_protocol_select="tls_protocol"
2464 rtmpt_protocol_select="ffrtmphttp_protocol"
2465 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2466 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2467 rtp_protocol_select="udp_protocol"
2468 sctp_protocol_deps="struct_sctp_event_subscribe"
2469 sctp_protocol_select="network"
2470 srtp_protocol_select="rtp_protocol srtp"
2471 tcp_protocol_select="network"
2472 tls_gnutls_protocol_deps="gnutls"
2473 tls_gnutls_protocol_select="tcp_protocol"
2474 tls_openssl_protocol_conflict="tls_gnutls_protocol"
2475 tls_openssl_protocol_deps="openssl"
2476 tls_openssl_protocol_select="tcp_protocol"
2477 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2478 udp_protocol_select="network"
2479 unix_protocol_deps="sys_un_h"
2480 unix_protocol_select="network"
2481
2482 # filters
2483 asyncts_filter_deps="avresample"
2484 blackframe_filter_deps="gpl"
2485 boxblur_filter_deps="gpl"
2486 bs2b_filter_deps="libbs2b"
2487 cropdetect_filter_deps="gpl"
2488 deinterlace_qsv_filter_deps="libmfx"
2489 deinterlace_vaapi_filter_deps="vaapi"
2490 delogo_filter_deps="gpl"
2491 drawtext_filter_deps="libfreetype"
2492 drawtext_filter_suggest="libfontconfig"
2493 frei0r_filter_deps="frei0r libdl"
2494 frei0r_src_filter_deps="frei0r libdl"
2495 hdcd_filter_deps="libhdcd"
2496 hqdn3d_filter_deps="gpl"
2497 interlace_filter_deps="gpl"
2498 movie_filter_deps="avcodec avformat"
2499 ocv_filter_deps="libopencv"
2500 resample_filter_deps="avresample"
2501 scale_filter_deps="swscale"
2502 scale_qsv_filter_deps="libmfx"
2503 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2504
2505 # examples
2506 decode_audio_example_deps="avcodec avutil"
2507 decode_video_example_deps="avcodec avutil"
2508 encode_audio_example_deps="avcodec avutil"
2509 encode_video_example_deps="avcodec avutil"
2510 filter_audio_example_deps="avfilter avutil"
2511 metadata_example_deps="avformat avutil"
2512 output_example_deps="avcodec avformat avresample avutil swscale"
2513 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2514 transcode_aac_example_deps="avcodec avformat avresample"
2515
2516 # EXTRALIBS_LIST
2517 cpu_init_extralibs="pthreads_extralibs"
2518 cws2fws_extralibs="zlib_extralibs"
2519
2520 # libraries, in linking order
2521 avcodec_deps="avutil"
2522 avcodec_select="null_bsf"
2523 avdevice_deps="avformat avcodec avutil"
2524 avfilter_deps="avutil"
2525 avformat_deps="avcodec avutil"
2526 avformat_suggest="network"
2527 avresample_deps="avutil"
2528 swscale_deps="avutil"
2529
2530 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2531 avdevice_extralibs="libm_extralibs"
2532 avformat_extralibs="libm_extralibs"
2533 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2534 avresample_extralibs="libm_extralibs"
2535 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"
2536 swscale_extralibs="libm_extralibs"
2537
2538 # programs
2539 avconv_deps="avcodec avfilter avformat avresample swscale"
2540 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2541                fps_filter null_filter resample_filter scale_filter
2542                trim_filter"
2543 avconv_suggest="dxva2_lib ole32 psapi shell32"
2544 avplay_deps="avcodec avfilter avformat avresample sdl"
2545 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2546 avplay_suggest="shell32"
2547 avprobe_deps="avcodec avformat"
2548 avprobe_suggest="shell32"
2549
2550 # documentation
2551 pod2man_deps="doc"
2552 texi2html_deps="doc"
2553
2554 # default parameters
2555
2556 logfile="avbuild/config.log"
2557
2558 # installation paths
2559 prefix_default="/usr/local"
2560 bindir_default='${prefix}/bin'
2561 datadir_default='${prefix}/share/avconv'
2562 docdir_default='${prefix}/share/doc/libav'
2563 incdir_default='${prefix}/include'
2564 libdir_default='${prefix}/lib'
2565 mandir_default='${prefix}/share/man'
2566 shlibdir_default="$libdir_default"
2567
2568 # toolchain
2569 ar_default="ar"
2570 cc_default="gcc"
2571 host_cc_default="gcc"
2572 x86asmexe_default="nasm"
2573 ln_s="ln -s -f"
2574 nm_default="nm -g"
2575 pkg_config_default=pkg-config
2576 ranlib="ranlib"
2577 strip="strip"
2578 version_script='--version-script'
2579
2580 # machine
2581 arch_default=$(uname -m)
2582 cpu="generic"
2583 intrinsics="none"
2584
2585 # OS
2586 target_os_default=$(tolower $(uname -s))
2587 host_os=$target_os_default
2588
2589 # configurable options
2590 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2591
2592 enable asm
2593 enable debug
2594 enable doc
2595 enable faan faandct faanidct
2596 enable optimizations
2597 enable safe_bitstream_reader
2598 enable static
2599 enable swscale_alpha
2600 enable valgrind_backtrace
2601
2602 # By default, enable only those hwaccels that have no external dependencies.
2603 enable d3d11va dxva2 vda vdpau
2604
2605 # internal components are enabled by default
2606 enable $EXTRALIBS_LIST
2607
2608 # Avoid external, non-system, libraries getting enabled by dependency resolution
2609 disable $EXTERNAL_LIBRARY_LIST
2610
2611 # build settings
2612 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2613 LIBPREF="lib"
2614 LIBSUF=".a"
2615 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2616 SLIBPREF="lib"
2617 SLIBSUF=".so"
2618 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2619 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2620 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2621 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2622 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2623 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2624 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2625
2626 asflags_filter=echo
2627 cflags_filter=echo
2628 ldflags_filter=echo
2629
2630 AS_C='-c'
2631 AS_O='-o $@'
2632 CC_C='-c'
2633 CC_E='-E -o $@'
2634 CC_O='-o $@'
2635 OBJCC_C='-c'
2636 OBJCC_E='-E -o $@'
2637 OBJCC_O='-o $@'
2638 X86ASM_O='-o $@'
2639 LD_O='-o $@'
2640 LD_LIB='-l%'
2641 LD_PATH='-L'
2642 HOSTCC_C='-c'
2643 HOSTCC_E='-E -o $@'
2644 HOSTCC_O='-o $@'
2645 HOSTLD_O='-o $@'
2646
2647 host_extralibs='-lm'
2648 host_cflags_filter=echo
2649 host_ldflags_filter=echo
2650
2651 target_path='$(CURDIR)'
2652
2653 # since the object filename is not given with the -MM flag, the compiler
2654 # is only able to print the basename, and we must add the path ourselves
2655 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2656 DEPFLAGS='-MM'
2657
2658 mkdir -p avbuild
2659
2660 # find source path
2661 if test -f configure; then
2662     source_path=.
2663 else
2664     source_path=$(cd $(dirname "$0"); pwd)
2665     echo "$source_path" | grep -q '[[:blank:]]' &&
2666         die "Out of tree builds are impossible with whitespace in source path."
2667     test -e "$source_path/config.h" &&
2668         die "Out of tree builds are impossible with config.h in source dir."
2669 fi
2670
2671 for v in "$@"; do
2672     r=${v#*=}
2673     l=${v%"$r"}
2674     r=$(sh_quote "$r")
2675     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2676 done
2677
2678 find_things(){
2679     thing=$1
2680     pattern=$2
2681     file=$source_path/$3
2682     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2683 }
2684
2685 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2686 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2687 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2688 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2689 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2690 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2691 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2692 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2693 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2694
2695 find_things_extern(){
2696     thing=$1
2697     pattern=$2
2698     file=$source_path/$3
2699     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2700 }
2701
2702 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2703 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2704
2705 AVCODEC_COMPONENTS_LIST="
2706     $BSF_LIST
2707     $DECODER_LIST
2708     $ENCODER_LIST
2709     $HWACCEL_LIST
2710     $PARSER_LIST
2711 "
2712
2713 AVDEVICE_COMPONENTS_LIST="
2714     $INDEV_LIST
2715     $OUTDEV_LIST
2716 "
2717
2718 AVFILTER_COMPONENTS_LIST="
2719     $FILTER_LIST
2720 "
2721
2722 AVFORMAT_COMPONENTS_LIST="
2723     $DEMUXER_LIST
2724     $MUXER_LIST
2725     $PROTOCOL_LIST
2726 "
2727
2728 ALL_COMPONENTS="
2729     $AVCODEC_COMPONENTS_LIST
2730     $AVDEVICE_COMPONENTS_LIST
2731     $AVFILTER_COMPONENTS_LIST
2732     $AVFORMAT_COMPONENTS_LIST
2733 "
2734
2735 for n in $COMPONENT_LIST; do
2736     v=$(toupper ${n%s})_LIST
2737     eval enable \$$v
2738     eval ${n}_if_any="\$$v"
2739 done
2740
2741 enable $ARCH_EXT_LIST
2742
2743 die_unknown(){
2744     echo "Unknown option \"$1\"."
2745     echo "See $0 --help for available options."
2746     exit 1
2747 }
2748
2749 print_3_columns() {
2750     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2751 }
2752
2753 show_list() {
2754     suffix=_$1
2755     shift
2756     echo $* | sed s/$suffix//g | print_3_columns
2757     exit 0
2758 }
2759
2760 rand_list(){
2761     IFS=', '
2762     set -- $*
2763     unset IFS
2764     for thing; do
2765         comp=${thing%:*}
2766         prob=${thing#$comp}
2767         prob=${prob#:}
2768         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2769         echo "prob ${prob:-0.5}"
2770         printf '%s\n' $comp
2771     done
2772 }
2773
2774 do_random(){
2775     action=$1
2776     shift
2777     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2778     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2779 }
2780
2781 for opt do
2782     optval="${opt#*=}"
2783     case "$opt" in
2784         --extra-ldflags=*)
2785             add_ldflags $optval
2786         ;;
2787         --extra-ldexeflags=*)
2788             add_ldexeflags $optval
2789         ;;
2790         --extra-libs=*)
2791             add_extralibs $optval
2792         ;;
2793         --disable-devices)
2794             disable $INDEV_LIST $OUTDEV_LIST
2795         ;;
2796         --enable-debug=*)
2797             debuglevel="$optval"
2798         ;;
2799         --disable-programs)
2800             disable $PROGRAM_LIST
2801         ;;
2802         --disable-everything)
2803             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2804         ;;
2805         --disable-all)
2806             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2807             disable $LIBRARY_LIST $PROGRAM_LIST doc
2808         ;;
2809         --enable-random|--disable-random)
2810             action=${opt%%-random}
2811             do_random ${action#--} $COMPONENT_LIST
2812         ;;
2813         --enable-random=*|--disable-random=*)
2814             action=${opt%%-random=*}
2815             do_random ${action#--} $optval
2816         ;;
2817         --enable-*=*|--disable-*=*)
2818             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2819             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2820             eval list=\$$(toupper $thing)_LIST
2821             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2822             $action $(filter "$name" $list)
2823         ;;
2824         --enable-avserver|--disable-avserver*)
2825             warn "avserver has been removed, the ${opt} option is only"\
2826                  "provided for compatibility and will be removed in the future"
2827         ;;
2828         --enable-yasm|--disable-yasm)
2829             warn "The ${opt} option is only provided for compatibility and will be\n"\
2830                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2831             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2832         ;;
2833         --enable-?*|--disable-?*)
2834             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2835             if is_in $option $COMPONENT_LIST; then
2836                 test $action = disable && action=unset
2837                 eval $action \$$(toupper ${option%s})_LIST
2838             elif is_in $option $CMDLINE_SELECT; then
2839                 $action $option
2840             else
2841                 die_unknown $opt
2842             fi
2843         ;;
2844         --list-*)
2845             NAME="${opt#--list-}"
2846             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2847             NAME=${NAME%s}
2848             eval show_list $NAME \$$(toupper $NAME)_LIST
2849         ;;
2850         --help|-h) show_help
2851         ;;
2852         --quiet|-q) quiet=yes
2853         ;;
2854         *)
2855             optname="${opt%%=*}"
2856             optname="${optname#--}"
2857             optname=$(echo "$optname" | sed 's/-/_/g')
2858             if is_in $optname $CMDLINE_SET; then
2859                 eval $optname='$optval'
2860             elif is_in $optname $CMDLINE_APPEND; then
2861                 append $optname "$optval"
2862             else
2863                 die_unknown $opt
2864             fi
2865         ;;
2866     esac
2867 done
2868
2869 for e in $env; do
2870     eval "export $e"
2871 done
2872
2873 disabled logging && logfile=/dev/null
2874
2875 # Die early if licensing-related configure options are incompatible.
2876 die_license_disabled() {
2877     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2878 }
2879
2880 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2881 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2882 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2883
2884 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2885
2886 # Disable all the library-specific components if the library itself
2887 # is disabled, see AVCODEC_LIST and following _LIST variables.
2888
2889 disable_components(){
2890     disabled ${1} && disable $(
2891         eval components="\$$(toupper ${1})_COMPONENTS"
2892         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2893     )
2894 }
2895
2896 map 'disable_components $v' $LIBRARY_LIST
2897
2898 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2899 set >> $logfile
2900
2901 case "$toolchain" in
2902     *-asan)
2903         cc_default="${toolchain%-asan}"
2904         add_cflags  -fsanitize=address
2905         add_ldflags -fsanitize=address
2906     ;;
2907     *-msan)
2908         cc_default="${toolchain%-msan}"
2909         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2910         add_ldflags -fsanitize=memory
2911     ;;
2912     *-tsan)
2913         cc_default="${toolchain%-tsan}"
2914         add_cflags  -fsanitize=thread -fPIE
2915         add_ldflags -fsanitize=thread -pie
2916         case "$toolchain" in
2917             gcc-tsan)
2918                 add_cflags  -fPIC
2919                 add_ldflags -fPIC
2920                 ;;
2921         esac
2922     ;;
2923     *-usan)
2924         cc_default="${toolchain%-usan}"
2925         add_cflags  -fsanitize=undefined
2926         add_ldflags -fsanitize=undefined
2927         case "$toolchain" in
2928             clang-usan)
2929                 add_cflags -O1
2930                 ;;
2931         esac
2932     ;;
2933     valgrind-*)
2934         target_exec_default="valgrind"
2935         case "$toolchain" in
2936             valgrind-massif)
2937                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2938                 ;;
2939             valgrind-memcheck)
2940                 target_exec_args="--track-origins=yes --leak-check=full"
2941                 ;;
2942         esac
2943     ;;
2944     msvc)
2945         # Check whether the current MSVC version needs the C99 converter.
2946         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2947         # support enough of C99 to build libav. Default to the new
2948         # behaviour if the regexp was unable to match anything, since this
2949         # successfully parses the version number of existing supported
2950         # versions that require the converter (MSVC 2010 and 2012).
2951         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2952         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2953             cc_default="cl"
2954         else
2955             cc_default="c99wrap cl"
2956         fi
2957         ld_default="$source_path/compat/windows/mslink"
2958         nm_default="dumpbin -symbols"
2959         ar_default="lib"
2960         case "$arch" in
2961         arm*)
2962             as_default="armasm"
2963             ;;
2964         esac
2965         target_os_default="win32"
2966         # Use a relative path for TMPDIR. This makes sure all the
2967         # ffconf temp files are written with a relative path, avoiding
2968         # issues with msys/win32 path conversion for MSVC parameters
2969         # such as -Fo<file> or -out:<file>.
2970         TMPDIR=.
2971     ;;
2972     icl)
2973         cc_default="icl"
2974         ld_default="xilink"
2975         nm_default="dumpbin -symbols"
2976         ar_default="xilib"
2977         target_os_default="win32"
2978         TMPDIR=.
2979     ;;
2980     gcov)
2981         add_cflags  -fprofile-arcs -ftest-coverage
2982         add_ldflags -fprofile-arcs -ftest-coverage
2983     ;;
2984     llvm-cov)
2985         add_cflags -fprofile-arcs -ftest-coverage
2986         add_ldflags --coverage
2987     ;;
2988     hardened)
2989         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2990         add_cflags   -fno-strict-overflow -fstack-protector-all
2991         add_ldflags  -Wl,-z,relro -Wl,-z,now
2992     ;;
2993     ?*)
2994         die "Unknown toolchain $toolchain"
2995     ;;
2996 esac
2997
2998 test -n "$cross_prefix" && enable cross_compile
2999
3000 if enabled cross_compile; then
3001     test -n "$arch" && test -n "$target_os" ||
3002         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3003 fi
3004
3005 ar_default="${cross_prefix}${ar_default}"
3006 cc_default="${cross_prefix}${cc_default}"
3007 objcc_default="${cross_prefix}${objcc_default}"
3008 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3009 nm_default="${cross_prefix}${nm_default}"
3010 pkg_config_default="${cross_prefix}${pkg_config_default}"
3011 ranlib="${cross_prefix}${ranlib}"
3012 strip="${cross_prefix}${strip}"
3013
3014 sysinclude_default="${sysroot}/usr/include"
3015
3016 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3017 enabled cross_compile || host_cc_default=$cc
3018 set_default host_cc
3019
3020 if ! $pkg_config --version >/dev/null 2>&1; then
3021     warn "$pkg_config not found, library detection may fail."
3022     pkg_config=false
3023 fi
3024
3025 exesuf() {
3026     case $1 in
3027         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3028     esac
3029 }
3030
3031 EXESUF=$(exesuf $target_os)
3032 HOSTEXESUF=$(exesuf $host_os)
3033
3034 # set temporary file name
3035 : ${TMPDIR:=$TEMPDIR}
3036 : ${TMPDIR:=$TMP}
3037 : ${TMPDIR:=/tmp}
3038
3039 if ! check_cmd mktemp -u XXXXXX; then
3040     # simple replacement for missing mktemp
3041     # NOT SAFE FOR GENERAL USE
3042     mktemp(){
3043         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3044         echo "$tmpname"
3045         mkdir "$tmpname"
3046     }
3047 fi
3048
3049 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3050     die "Unable to create temporary directory in $TMPDIR."
3051
3052 tmpfile(){
3053     tmp="${AVTMPDIR}/test"$2
3054     (set -C; exec > $tmp) 2> /dev/null ||
3055         die "Unable to create temporary file in $AVTMPDIR."
3056     eval $1=$tmp
3057 }
3058
3059 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3060 trap 'exit 2' INT
3061
3062 tmpfile TMPASM .asm
3063 tmpfile TMPC   .c
3064 tmpfile TMPE   $EXESUF
3065 tmpfile TMPH   .h
3066 tmpfile TMPO   .o
3067 tmpfile TMPS   .S
3068 tmpfile TMPSH  .sh
3069 tmpfile TMPV   .ver
3070
3071 unset -f mktemp
3072
3073 chmod +x $TMPE
3074
3075 # make sure we can execute files in $TMPDIR
3076 cat > $TMPSH 2>> $logfile <<EOF
3077 #! /bin/sh
3078 EOF
3079 chmod +x $TMPSH >> $logfile 2>&1
3080 if ! $TMPSH >> $logfile 2>&1; then
3081     cat <<EOF
3082 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3083 variable to another directory and make sure that it is not mounted noexec.
3084 EOF
3085     die "Sanity test failed."
3086 fi
3087
3088 armasm_flags(){
3089     for flag; do
3090         case $flag in
3091             # Filter out MSVC cl.exe options from cflags that shouldn't
3092             # be passed to gas-preprocessor
3093             -M[TD]*)                                            ;;
3094             *)                  echo $flag                      ;;
3095         esac
3096    done
3097 }
3098
3099 ccc_flags(){
3100     for flag; do
3101         case $flag in
3102             -std=c99)           echo -c99                       ;;
3103             -mcpu=*)            echo -arch ${flag#*=}           ;;
3104             -mieee)             echo -ieee                      ;;
3105             -O*|-fast)          echo $flag                      ;;
3106             -fno-math-errno)    echo -assume nomath_errno       ;;
3107             -g)                 echo -g3                        ;;
3108             -Wall)              echo -msg_enable level2         ;;
3109             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3110             -Wl,*)              echo $flag                      ;;
3111             -f*|-W*)                                            ;;
3112             *)                  echo $flag                      ;;
3113         esac
3114    done
3115 }
3116
3117 cparser_flags(){
3118     for flag; do
3119         case $flag in
3120             -Wno-switch)             echo -Wno-switch-enum ;;
3121             -Wno-format-zero-length) ;;
3122             -Wdisabled-optimization) ;;
3123             -Wno-pointer-sign)       echo -Wno-other ;;
3124             *)                       echo $flag ;;
3125         esac
3126     done
3127 }
3128
3129 msvc_common_flags(){
3130     for flag; do
3131         case $flag in
3132             # In addition to specifying certain flags under the compiler
3133             # specific filters, they must be specified here as well or else the
3134             # generic catch all at the bottom will print the original flag.
3135             -Wall)                ;;
3136             -Wextra)              ;;
3137             -std=c99)             ;;
3138             # Common flags
3139             -fomit-frame-pointer) ;;
3140             -g)                   echo -Z7 ;;
3141             -fno-math-errno)      ;;
3142             -fno-common)          ;;
3143             -fno-signed-zeros)    ;;
3144             -fPIC)                ;;
3145             -mthumb)              ;;
3146             -march=*)             ;;
3147             -lz)                  echo zlib.lib ;;
3148             -lx264)               echo libx264.lib ;;
3149             -l*)                  echo ${flag#-l}.lib ;;
3150             -L*)                  echo -libpath:${flag#-L} ;;
3151             *)                    echo $flag ;;
3152         esac
3153     done
3154 }
3155
3156 msvc_flags(){
3157     msvc_common_flags "$@"
3158     for flag; do
3159         case $flag in
3160             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3161                                        -wd4554 ;;
3162             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3163                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3164                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3165                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3166         esac
3167     done
3168 }
3169
3170 icl_flags(){
3171     msvc_common_flags "$@"
3172     for flag; do
3173         case $flag in
3174             # Despite what Intel's documentation says -Wall, which is supported
3175             # on Windows, does enable remarks so disable them here.
3176             -Wall)                echo $flag -Qdiag-disable:remark ;;
3177             -std=c99)             echo -Qstd=c99 ;;
3178         esac
3179     done
3180 }
3181
3182 pgi_flags(){
3183     for flag; do
3184         case $flag in
3185             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3186             -fomit-frame-pointer) echo -Mnoframe ;;
3187             -g)                   echo -gopt ;;
3188             *)                    echo $flag ;;
3189         esac
3190     done
3191 }
3192
3193 suncc_flags(){
3194     for flag; do
3195         case $flag in
3196             -march=*|-mcpu=*)
3197                 case "${flag#*=}" in
3198                     native)                   echo -xtarget=native       ;;
3199                     v9|niagara)               echo -xarch=sparc          ;;
3200                     ultrasparc)               echo -xarch=sparcvis       ;;
3201                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3202                     i586|pentium)             echo -xchip=pentium        ;;
3203                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3204                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3205                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3206                     pentium4*)          echo -xtarget=pentium4           ;;
3207                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3208                     *-sse3)             echo -xarch=sse3                 ;;
3209                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3210                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3211                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3212                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3213                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3214                     k8|opteron|athlon64|athlon-fx)
3215                                                echo -xarch=sse2a         ;;
3216                     athlon*)                   echo -xarch=pentium_proa  ;;
3217                 esac
3218                 ;;
3219             -std=c99)             echo -xc99              ;;
3220             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3221             -fPIC)                echo -KPIC -xcode=pic32 ;;
3222             -W*,*)                echo $flag              ;;
3223             -f*-*|-W*|-mimpure-text)                      ;;
3224             -shared)              echo -G                 ;;
3225             *)                    echo $flag              ;;
3226         esac
3227     done
3228 }
3229
3230 tms470_flags(){
3231     for flag; do
3232         case $flag in
3233             -march=*|-mcpu=*)
3234                 case "${flag#*=}" in
3235                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3236                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3237                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3238                     armv6*|arm11*)          echo -mv=6   ;;
3239                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3240                                             echo -mv=5e  ;;
3241                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3242                 esac
3243                 ;;
3244             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3245             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3246             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3247             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3248             -msoft-float)   echo --float_support=vfplib       ;;
3249             -O[0-3]|-mf=*)  echo $flag                        ;;
3250             -g)             echo -g -mn                       ;;
3251             -pds=*)         echo $flag                        ;;
3252             -D*|-I*)        echo $flag                        ;;
3253             --gcc|--abi=*)  echo $flag                        ;;
3254             -me)            echo $flag                        ;;
3255         esac
3256     done
3257 }
3258
3259 probe_cc(){
3260     pfx=$1
3261     _cc=$2
3262
3263     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3264     unset _ld_o _ldflags _ld_lib _ld_path
3265     unset _depflags _DEPCMD _DEPFLAGS
3266     _flags_filter=echo
3267
3268     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3269         _type=llvm_gcc
3270         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3271         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3272         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3273         _cflags_speed='-O3'
3274         _cflags_size='-Os'
3275     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3276         _type=gcc
3277         gcc_version=$($_cc --version | head -n1)
3278         gcc_basever=$($_cc -dumpversion)
3279         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3280         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3281         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3282         if ! $_cc -dumpversion | grep -q '^2\.'; then
3283             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3284         fi
3285         _cflags_speed='-O3'
3286         _cflags_size='-Os'
3287     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3288         _type=icc
3289         _ident=$($_cc --version | head -n1)
3290         _depflags='-MMD'
3291         _cflags_speed='-O3'
3292         _cflags_size='-Os'
3293         _cflags_noopt='-O1'
3294     elif $_cc -v 2>&1 | grep -q xlc; then
3295         _type=xlc
3296         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3297         _cflags_speed='-O5'
3298         _cflags_size='-O5 -qcompact'
3299     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3300         _type=ccc
3301         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3302         _DEPFLAGS='-M'
3303         _cflags_speed='-fast'
3304         _cflags_size='-O1'
3305         _flags_filter=ccc_flags
3306     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3307         test -d "$sysroot" || die "No valid sysroot specified."
3308         _type=armcc
3309         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3310         armcc_conf="$PWD/armcc.conf"
3311         $_cc --arm_linux_configure                 \
3312              --arm_linux_config_file="$armcc_conf" \
3313              --configure_sysroot="$sysroot"        \
3314              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3315              die "Error creating armcc configuration file."
3316         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3317         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3318         as_default="${cross_prefix}gcc"
3319         _depflags='-MMD'
3320         _cflags_speed='-O3'
3321         _cflags_size='-Os'
3322     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3323         _type=tms470
3324         _ident=$($_cc -version | head -n1 | tr -s ' ')
3325         _flags='--gcc --abi=eabi -me'
3326         _cc_e='-ppl -fe=$@'
3327         _cc_o='-fe=$@'
3328         _depflags='-ppa -ppd=$(@:.o=.d)'
3329         _cflags_speed='-O3 -mf=5'
3330         _cflags_size='-O3 -mf=2'
3331         _flags_filter=tms470_flags
3332     elif $_cc -v 2>&1 | grep -q clang; then
3333         _type=clang
3334         _ident=$($_cc --version 2>/dev/null | head -n1)
3335         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3336         _cflags_speed='-O3'
3337         _cflags_size='-Os'
3338     elif $_cc -V 2>&1 | grep -q Sun; then
3339         _type=suncc
3340         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3341         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3342         _DEPFLAGS='-xM1 -xc99'
3343         _ldflags='-std=c99'
3344         _cflags_speed='-O5'
3345         _cflags_size='-O5 -xspace'
3346         _flags_filter=suncc_flags
3347     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3348         _type=pathscale
3349         _ident=$($_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'
3354     elif $_cc -v 2>&1 | grep -q Open64; then
3355         _type=open64
3356         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3357         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3358         _cflags_speed='-O2'
3359         _cflags_size='-Os'
3360         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3361     elif $_cc -V 2>&1 | grep -q Portland; then
3362         _type=pgi
3363         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3364         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3365         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3366         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3367         _cflags_noopt="-O1"
3368         _flags_filter=pgi_flags
3369     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3370         _type=armasm
3371         _ident=$($_cc | head -n1)
3372         # 4509: "This form of conditional instruction is deprecated"
3373         _flags="-nologo -ignore 4509"
3374         _flags_filter=armasm_flags
3375     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3376         _type=msvc
3377         _ident=$($_cc 2>&1 | head -n1)
3378         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3379         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3380         _cflags_speed="-O2"
3381         _cflags_size="-O1"
3382         _cflags_noopt="-O1"
3383         if $_cc -nologo- 2>&1 | grep -q Linker; then
3384             _ld_o='-out:$@'
3385         else
3386             _ld_o='-Fe$@'
3387         fi
3388         _cc_o='-Fo$@'
3389         _cc_e='-P -Fi$@'
3390         _flags_filter=msvc_flags
3391         _ld_lib='lib%.a'
3392         _ld_path='-libpath:'
3393         _flags='-nologo'
3394     elif $_cc 2>&1 | grep -q Intel; then
3395         _type=icl
3396         _ident=$($_cc 2>&1 | head -n1)
3397         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3398         # Not only is O3 broken on 13.x+ but it is slower on all previous
3399         # versions (tested) as well.
3400         _cflags_speed="-O2"
3401         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3402         if $_cc 2>&1 | grep -q Linker; then
3403             _ld_o='-out:$@'
3404         else
3405             _ld_o='-Fe$@'
3406         fi
3407         _cc_o='-Fo$@'
3408         _cc_e='-P'
3409         _flags_filter=icl_flags
3410         _ld_lib='lib%.a'
3411         _ld_path='-libpath:'
3412         # -Qdiag-error to make icl error when seeing certain unknown arguments
3413         _flags='-nologo -Qdiag-error:4044,10157'
3414         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3415         # with MSVC which enables it by default.
3416         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3417     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3418         # lld can emulate multiple different linkers; in ms link.exe mode,
3419         # the -? parameter gives the help output which contains an identifyable
3420         # string, while it gives an error in other modes.
3421         _type=lld-link
3422         # The link.exe mode doesn't have a switch for getting the version,
3423         # but we can force it back to gnu mode and get the version from there.
3424         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3425         _ld_o='-out:$@'
3426         _flags_filter=msvc_flags
3427         _ld_lib='lib%.a'
3428         _ld_path='-libpath:'
3429     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3430         _type=cparser
3431         _ident=$($_cc --version | head -n1)
3432         _depflags='-MMD'
3433         _cflags_speed='-O4'
3434         _cflags_size='-O2'
3435         _flags_filter=cparser_flags
3436     fi
3437
3438     eval ${pfx}_type=\$_type
3439     eval ${pfx}_ident=\$_ident
3440 }
3441
3442 set_ccvars(){
3443     eval ${1}_C=\${_cc_c-\${${1}_C}}
3444     eval ${1}_E=\${_cc_e-\${${1}_E}}
3445     eval ${1}_O=\${_cc_o-\${${1}_O}}
3446
3447     if [ -n "$_depflags" ]; then
3448         eval ${1}_DEPFLAGS=\$_depflags
3449     else
3450         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3451         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3452         eval DEP${1}FLAGS=\$_flags
3453     fi
3454 }
3455
3456 probe_cc cc "$cc"
3457 cflags_filter=$_flags_filter
3458 cflags_speed=$_cflags_speed
3459 cflags_size=$_cflags_size
3460 cflags_noopt=$_cflags_noopt
3461 add_cflags $_flags $_cflags
3462 cc_ldflags=$_ldflags
3463 set_ccvars CC
3464
3465 probe_cc hostcc "$host_cc"
3466 host_cflags_filter=$_flags_filter
3467 host_cflags_speed=$_cflags_speed
3468 add_host_cflags  $_flags $_cflags
3469 set_ccvars HOSTCC
3470
3471 test -n "$cc_type" && enable $cc_type ||
3472     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3473
3474 : ${as_default:=$cc}
3475 : ${objcc_default:=$cc}
3476 : ${dep_cc_default:=$cc}
3477 : ${ld_default:=$cc}
3478 : ${host_ld_default:=$host_cc}
3479 set_default ar as objcc dep_cc ld host_ld
3480
3481 probe_cc as "$as"
3482 asflags_filter=$_flags_filter
3483 add_asflags $_flags $_cflags
3484 set_ccvars AS
3485
3486 probe_cc objcc "$objcc"
3487 objcflags_filter=$_flags_filter
3488 add_objcflags $_flags $_cflags
3489 set_ccvars OBJC
3490
3491 probe_cc ld "$ld"
3492 ldflags_filter=$_flags_filter
3493 add_ldflags $_flags $_ldflags
3494 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3495 LD_O=${_ld_o-$LD_O}
3496 LD_LIB=${_ld_lib-$LD_LIB}
3497 LD_PATH=${_ld_path-$LD_PATH}
3498
3499 probe_cc hostld "$host_ld"
3500 host_ldflags_filter=$_flags_filter
3501 add_host_ldflags $_flags $_ldflags
3502 HOSTLD_O=${_ld_o-$HOSTLD_O}
3503
3504 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3505     probe_cc depcc "$dep_cc"
3506     CCDEP=${_DEPCMD:-$DEPCMD}
3507     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3508     DEPCCFLAGS=$_flags
3509 fi
3510
3511 if $ar 2>&1 | grep -q Microsoft; then
3512     arflags="-nologo"
3513     ar_o='-out:$@'
3514 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3515     arflags="rq"
3516     ar_o='$@'
3517 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3518     arflags='-Xany -r -c'
3519     ar_o='$@'
3520 else
3521     arflags="rc"
3522     ar_o='$@'
3523 fi
3524
3525 add_cflags $extra_cflags
3526 add_objcflags $extra_objcflags
3527 add_asflags $extra_cflags
3528
3529 if test -n "$sysroot"; then
3530     case "$cc_type" in
3531         gcc|llvm_gcc|clang)
3532             add_cppflags --sysroot="$sysroot"
3533             add_ldflags --sysroot="$sysroot"
3534         ;;
3535         tms470)
3536             add_cppflags -I"$sysinclude"
3537             add_ldflags  --sysroot="$sysroot"
3538         ;;
3539     esac
3540 fi
3541
3542 if test "$cpu" = host; then
3543     enabled cross_compile &&
3544         die "--cpu=host makes no sense when cross-compiling."
3545
3546     case "$cc_type" in
3547         gcc|llvm_gcc)
3548             check_native(){
3549                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3550                 sed -n "/cc1.*$1=/{
3551                             s/.*$1=\\([^ ]*\\).*/\\1/
3552                             p
3553                             q
3554                         }" $TMPE
3555             }
3556             cpu=$(check_native -march || check_native -mcpu)
3557         ;;
3558     esac
3559
3560     test "${cpu:-host}" = host &&
3561         die "--cpu=host not supported with compiler $cc"
3562 fi
3563
3564 # Deal with common $arch aliases
3565 case "$arch" in
3566     aarch64|arm64)
3567         arch="aarch64"
3568     ;;
3569     arm*)
3570         arch="arm"
3571     ;;
3572     mips*|IP*)
3573         case "$arch" in
3574         *el)
3575             add_cppflags -EL
3576             add_ldflags -EL
3577         ;;
3578         *eb)
3579             add_cppflags -EB
3580             add_ldflags -EB
3581         ;;
3582         esac
3583         arch="mips"
3584     ;;
3585     parisc*|hppa*)
3586         arch="parisc"
3587     ;;
3588     "Power Macintosh"|ppc*|powerpc*)
3589         arch="ppc"
3590     ;;
3591     s390|s390x)
3592         arch="s390"
3593     ;;
3594     sh4|sh)
3595         arch="sh4"
3596     ;;
3597     sun4u|sparc*)
3598         arch="sparc"
3599     ;;
3600     tilegx|tile-gx)
3601         arch="tilegx"
3602     ;;
3603     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3604         arch="x86"
3605     ;;
3606 esac
3607
3608 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3609 enable $arch
3610
3611 # Add processor-specific flags
3612 if enabled aarch64; then
3613
3614     case $cpu in
3615         armv*)
3616             cpuflags="-march=$cpu"
3617         ;;
3618         *)
3619             cpuflags="-mcpu=$cpu"
3620         ;;
3621     esac
3622
3623 elif enabled alpha; then
3624
3625     cpuflags="-mcpu=$cpu"
3626
3627 elif enabled arm; then
3628
3629     check_arm_arch() {
3630         check_cpp_condition stddef.h \
3631             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3632             $cpuflags
3633     }
3634
3635     probe_arm_arch() {
3636         if   check_arm_arch 4;        then echo armv4
3637         elif check_arm_arch 4T;       then echo armv4t
3638         elif check_arm_arch 5;        then echo armv5
3639         elif check_arm_arch 5E;       then echo armv5e
3640         elif check_arm_arch 5T;       then echo armv5t
3641         elif check_arm_arch 5TE;      then echo armv5te
3642         elif check_arm_arch 5TEJ;     then echo armv5te
3643         elif check_arm_arch 6;        then echo armv6
3644         elif check_arm_arch 6J;       then echo armv6j
3645         elif check_arm_arch 6K;       then echo armv6k
3646         elif check_arm_arch 6Z;       then echo armv6z
3647         elif check_arm_arch 6ZK;      then echo armv6zk
3648         elif check_arm_arch 6T2;      then echo armv6t2
3649         elif check_arm_arch 7;        then echo armv7
3650         elif check_arm_arch 7A  7_A;  then echo armv7-a
3651         elif check_arm_arch 7S;       then echo armv7-a
3652         elif check_arm_arch 7R  7_R;  then echo armv7-r
3653         elif check_arm_arch 7M  7_M;  then echo armv7-m
3654         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3655         elif check_arm_arch 8A  8_A;  then echo armv8-a
3656         fi
3657     }
3658
3659     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3660
3661     case $cpu in
3662         armv*)
3663             cpuflags="-march=$cpu"
3664             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3665         ;;
3666         *)
3667             cpuflags="-mcpu=$cpu"
3668             case $cpu in
3669                 cortex-a*)                               subarch=armv7a  ;;
3670                 cortex-r*)                               subarch=armv7r  ;;
3671                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3672                 arm11*)                                  subarch=armv6   ;;
3673                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3674                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3675                 *)                             subarch=$(probe_arm_arch) ;;
3676             esac
3677         ;;
3678     esac
3679
3680     case "$subarch" in
3681         armv5t*)    enable fast_clz                ;;
3682         armv[6-8]*) enable fast_clz fast_unaligned ;;
3683     esac
3684
3685 elif enabled avr32; then
3686
3687     case $cpu in
3688         ap7[02]0[0-2])
3689             subarch="avr32_ap"
3690             cpuflags="-mpart=$cpu"
3691         ;;
3692         ap)
3693             subarch="avr32_ap"
3694             cpuflags="-march=$cpu"
3695         ;;
3696         uc3[ab]*)
3697             subarch="avr32_uc"
3698             cpuflags="-mcpu=$cpu"
3699         ;;
3700         uc)
3701             subarch="avr32_uc"
3702             cpuflags="-march=$cpu"
3703         ;;
3704     esac
3705
3706 elif enabled bfin; then
3707
3708     cpuflags="-mcpu=$cpu"
3709
3710 elif enabled mips; then
3711
3712     cpuflags="-march=$cpu"
3713
3714 elif enabled ppc; then
3715
3716     disable ldbrx
3717
3718     case $(tolower $cpu) in
3719         601|ppc601|powerpc601)
3720             cpuflags="-mcpu=601"
3721             disable altivec
3722         ;;
3723         603*|ppc603*|powerpc603*)
3724             cpuflags="-mcpu=603"
3725             disable altivec
3726         ;;
3727         604*|ppc604*|powerpc604*)
3728             cpuflags="-mcpu=604"
3729             disable altivec
3730         ;;
3731         g3|75*|ppc75*|powerpc75*)
3732             cpuflags="-mcpu=750"
3733             disable altivec
3734         ;;
3735         g4|745*|ppc745*|powerpc745*)
3736             cpuflags="-mcpu=7450"
3737             disable vsx
3738         ;;
3739         74*|ppc74*|powerpc74*)
3740             cpuflags="-mcpu=7400"
3741             disable vsx
3742         ;;
3743         g5|970|ppc970|powerpc970)
3744             cpuflags="-mcpu=970"
3745             disable vsx
3746         ;;
3747         power[3-6]*)
3748             cpuflags="-mcpu=$cpu"
3749             disable vsx
3750         ;;
3751         power[7-8]*)
3752             cpuflags="-mcpu=$cpu"
3753             enable ldbrx
3754         ;;
3755         cell)
3756             cpuflags="-mcpu=cell"
3757             enable ldbrx
3758             disable vsx
3759         ;;
3760         e500mc)
3761             cpuflags="-mcpu=e500mc"
3762             disable altivec
3763         ;;
3764         e500v2)
3765             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3766             disable altivec
3767             disable dcbzl
3768         ;;
3769         e500)
3770             cpuflags="-mcpu=8540 -mhard-float"
3771             disable altivec
3772             disable dcbzl
3773         ;;
3774     esac
3775
3776 elif enabled sparc; then
3777
3778     case $cpu in
3779         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3780             cpuflags="-mcpu=$cpu"
3781         ;;
3782         ultrasparc*|niagara[234])
3783             cpuflags="-mcpu=$cpu"
3784         ;;
3785     esac
3786
3787 elif enabled x86; then
3788
3789     case $cpu in
3790         i[345]86|pentium)
3791             cpuflags="-march=$cpu"
3792             disable i686
3793             disable mmx
3794         ;;
3795         # targets that do NOT support nopl and conditional mov (cmov)
3796         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3797             cpuflags="-march=$cpu"
3798             disable i686
3799         ;;
3800         # targets that do support nopl and conditional mov (cmov)
3801         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3802             cpuflags="-march=$cpu"
3803             enable i686
3804             enable fast_cmov
3805         ;;
3806         # targets that do support conditional mov but on which it's slow
3807         pentium4|pentium4m|prescott|nocona)
3808             cpuflags="-march=$cpu"
3809             enable i686
3810             disable fast_cmov
3811         ;;
3812     esac
3813
3814 fi
3815
3816 if [ "$cpu" != generic ]; then
3817     add_cflags  $cpuflags
3818     add_asflags $cpuflags
3819     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3820 fi
3821
3822 # compiler sanity check
3823 check_exec <<EOF
3824 int main(void){ return 0; }
3825 EOF
3826 if test "$?" != 0; then
3827     echo "$cc is unable to create an executable file."
3828     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3829         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3830         echo "Only do this if you know what cross compiling means."
3831     fi
3832     die "C compiler test failed."
3833 fi
3834
3835 add_cppflags -D_ISOC99_SOURCE
3836
3837 # some compilers silently accept -std=c11, so we also need to check that the
3838 # version macro is defined properly
3839 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3840     add_cflags -std=c11 ||
3841     check_cflags -std=c99
3842
3843 check_cppflags -D_FILE_OFFSET_BITS=64
3844 check_cppflags -D_LARGEFILE_SOURCE
3845
3846 add_host_cppflags -D_ISOC99_SOURCE
3847 check_host_cflags -std=c99
3848 check_host_cflags -Wall
3849 check_host_cflags $host_cflags_speed
3850
3851 check_64bit(){
3852     arch32=$1
3853     arch64=$2
3854     expr=$3
3855     check_code cc "" "int test[2*($expr) - 1]" &&
3856         subarch=$arch64 || subarch=$arch32
3857 }
3858
3859 case "$arch" in
3860     aarch64|alpha|ia64)
3861         spic=$shared
3862     ;;
3863     mips)
3864         check_64bit mips mips64 '_MIPS_SIM > 1'
3865         spic=$shared
3866     ;;
3867     parisc)
3868         check_64bit parisc parisc64 'sizeof(void *) > 4'
3869         spic=$shared
3870     ;;
3871     ppc)
3872         check_64bit ppc ppc64 'sizeof(void *) > 4'
3873         spic=$shared
3874     ;;
3875     s390)
3876         check_64bit s390 s390x 'sizeof(void *) > 4'
3877         spic=$shared
3878     ;;
3879     sparc)
3880         check_64bit sparc sparc64 'sizeof(void *) > 4'
3881         spic=$shared
3882     ;;
3883     x86)
3884         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3885         if test "$subarch" = "x86_64"; then
3886             spic=$shared
3887         fi
3888     ;;
3889 esac
3890
3891 enable $subarch
3892 enabled spic && enable_weak pic
3893
3894 enabled x86_64 && objformat=elf64 || objformat="elf32"
3895
3896 # OS specific
3897 case $target_os in
3898     aix)
3899         SHFLAGS=-shared
3900         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3901         enabled shared && add_ldflags -Wl,-brtl
3902         ;;
3903     android)
3904         disable symver
3905         enable section_data_rel_ro
3906         SLIB_INSTALL_NAME='$(SLIBNAME)'
3907         SLIB_INSTALL_LINKS=
3908         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3909         ;;
3910     haiku)
3911         prefix_default="/boot/common"
3912         network_extralibs="-lnetwork"
3913         host_extralibs=
3914         ;;
3915     sunos)
3916         SHFLAGS='-shared -Wl,-h,$$(@F)'
3917         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3918         network_extralibs="-lsocket -lnsl"
3919         # When using suncc to build, the Solaris linker will mark
3920         # an executable with each instruction set encountered by
3921         # the Solaris assembler.  As our libraries contain their own
3922         # guards for processor-specific code, instead suppress
3923         # generation of the HWCAPS ELF section on Solaris x86 only.
3924         enabled_all suncc x86 &&
3925             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3926             add_ldflags -Wl,-M,mapfile
3927         nm_default='nm -P -g'
3928         version_script='-M'
3929         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3930         ;;
3931     netbsd)
3932         disable symver
3933         oss_indev_extralibs="-lossaudio"
3934         oss_outdev_extralibs="-lossaudio"
3935         ;;
3936     openbsd|bitrig)
3937         disable symver
3938         SHFLAGS='-shared'
3939         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3940         SLIB_INSTALL_LINKS=
3941         oss_indev_extralibs="-lossaudio"
3942         oss_outdev_extralibs="-lossaudio"
3943         ;;
3944     dragonfly)
3945         disable symver
3946         ;;
3947     freebsd)
3948         ;;
3949     bsd/os)
3950         add_extralibs -lpoll -lgnugetopt
3951         ;;
3952     darwin)
3953         enabled ppc && add_asflags -force_cpusubtype_ALL
3954         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3955         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3956         add_ldflags -Wl,-dynamic,-search_paths_first
3957         check_cflags -Werror=partial-availability
3958         SLIBSUF=".dylib"
3959         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3960         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3961         enabled x86_64 && objformat="macho64" || objformat="macho32"
3962         enabled_any pic shared ||
3963             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3964         check_header dispatch/dispatch.h &&
3965             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3966         ;;
3967     msys*)
3968         die "Native MSYS builds are discouraged, please use the MINGW environment."
3969         ;;
3970     mingw32*|mingw64*)
3971         if test $target_os = "mingw32ce"; then
3972             disable network
3973         else
3974             target_os=mingw32
3975         fi
3976         LIBTARGET=i386
3977         if enabled x86_64; then
3978             LIBTARGET="i386:x86-64"
3979         elif enabled arm; then
3980             LIBTARGET=arm-wince
3981         fi
3982         check_ldflags -Wl,--nxcompat
3983         check_ldflags -Wl,--dynamicbase
3984         shlibdir_default="$bindir_default"
3985         SLIBPREF=""
3986         SLIBSUF=".dll"
3987         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3988         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3989         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3990         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3991         SLIB_INSTALL_LINKS=
3992         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3993         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3994         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3995         enabled x86_64 && objformat="win64" || objformat="win32"
3996         dlltool="${cross_prefix}dlltool"
3997         ranlib=:
3998         enable dos_paths
3999         ;;
4000     win32|win64)
4001         disable symver
4002         if enabled shared; then
4003             # Link to the import library instead of the normal static library
4004             # for shared libs.
4005             LD_LIB='%.lib'
4006             # Cannot build both shared and static libs with MSVC or icl.
4007             disable static
4008         fi
4009         shlibdir_default="$bindir_default"
4010         SLIBPREF=""
4011         SLIBSUF=".dll"
4012         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4013         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4014         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4015         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4016         SLIB_INSTALL_LINKS=
4017         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4018         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4019         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4020         enabled x86_64 && objformat="win64" || objformat="win32"
4021         ranlib=:
4022         enable dos_paths
4023         ;;
4024     cygwin*)
4025         target_os=cygwin
4026         shlibdir_default="$bindir_default"
4027         SLIBPREF="cyg"
4028         SLIBSUF=".dll"
4029         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4030         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4031         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4032         SLIB_INSTALL_LINKS=
4033         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4034         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4035         enabled x86_64 && objformat="win64" || objformat="win32"
4036         enable dos_paths
4037         ;;
4038     *-dos|freedos|opendos)
4039         network_extralibs="-lsocket"
4040         objformat="coff"
4041         enable dos_paths
4042         add_cppflags -U__STRICT_ANSI__
4043         ;;
4044     linux)
4045         enable dv1394
4046         enable section_data_rel_ro
4047         ;;
4048     irix*)
4049         target_os=irix
4050         ranlib="echo ignoring ranlib"
4051         ;;
4052     os/2*)
4053         ln_s="cp -f"
4054         objformat="aout"
4055         add_cppflags -D_GNU_SOURCE
4056         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4057         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4058         LIBSUF="_s.a"
4059         SLIBPREF=""
4060         SLIBSUF=".dll"
4061         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4062         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4063         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4064             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4065             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4066             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4067             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4068         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4069             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4070         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4071         enable dos_paths
4072         ;;
4073     gnu/kfreebsd)
4074         add_cppflags -D_BSD_SOURCE
4075         ;;
4076     gnu)
4077         ;;
4078     qnx)
4079         add_cppflags -D_QNX_SOURCE
4080         network_extralibs="-lsocket"
4081         ;;
4082     symbian)
4083         SLIBSUF=".dll"
4084         enable dos_paths
4085         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4086         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4087         add_ldflags -Wl,--target1-abs,--no-undefined \
4088                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4089                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4090         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4091                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4092                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4093         ;;
4094     osf1)
4095         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4096         ;;
4097     minix)
4098         ;;
4099     none)
4100         ;;
4101     *)
4102         die "Unknown OS '$target_os'."
4103         ;;
4104 esac
4105
4106 # determine libc flavour
4107
4108 probe_libc(){
4109     pfx=$1
4110     pfx_no_=${pfx%_}
4111     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4112     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4113         eval ${pfx}libc_type=uclibc
4114         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4115     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4116         eval ${pfx}libc_type=glibc
4117         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4118     # MinGW headers can be installed on Cygwin, so check for newlib first.
4119     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4120         eval ${pfx}libc_type=newlib
4121         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4122     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4123     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4124         eval ${pfx}libc_type=mingw64
4125         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4126         eval test \$${pfx_no_}cc_type = "gcc" &&
4127             add_${pfx}cppflags -D__printf__=__gnu_printf__
4128     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4129          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4130         eval ${pfx}libc_type=mingw32
4131         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4132             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4133             die "ERROR: MinGW32 runtime version must be >= 3.15."
4134         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4135         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4136             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4137         eval test \$${pfx_no_}cc_type = "gcc" &&
4138             add_${pfx}cppflags -D__printf__=__gnu_printf__
4139     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4140         eval ${pfx}libc_type=msvcrt
4141         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4142             if [ "$pfx" = host_ ]; then
4143                 add_host_cppflags -Dsnprintf=_snprintf
4144             else
4145                 add_compat strtod.o strtod=avpriv_strtod
4146                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4147                                              _snprintf=avpriv_snprintf  \
4148                                              vsnprintf=avpriv_vsnprintf
4149             fi
4150         fi
4151         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4152         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4153         # 0x601 by default unless something else is set by the user.
4154         # This can easily lead to us detecting functions only present
4155         # in such new versions and producing binaries requiring windows 7.0.
4156         # Therefore explicitly set the default to XP unless the user has
4157         # set something else on the command line.
4158         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4159         # family. For these cases, configure is free to use any functions
4160         # found in the SDK headers by default. (Alternatively, we could force
4161         # _WIN32_WINNT to 0x0602 in that case.)
4162         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4163             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4164 #ifdef WINAPI_FAMILY
4165 #include <winapifamily.h>
4166 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4167 #error not desktop
4168 #endif
4169 #endif
4170 EOF
4171         if [ "$pfx" = "" ]; then
4172             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4173         fi
4174     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4175         eval ${pfx}libc_type=klibc
4176     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4177         eval ${pfx}libc_type=bionic
4178     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4179         eval ${pfx}libc_type=solaris
4180         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4181     else
4182         eval ${pfx}libc_type=default
4183         add_${pfx}cppflags -D_DEFAULT_SOURCE
4184     fi
4185 }
4186
4187 probe_libc
4188 test -n "$libc_type" && enable libc_$libc_type
4189 probe_libc host_
4190 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4191
4192 # hacks for compiler/libc/os combinations
4193
4194 case $libc_type in
4195     bionic)
4196         add_compat strtod.o strtod=avpriv_strtod
4197         ;;
4198     glibc)
4199         if enabled tms470; then
4200             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4201             add_cppflags -D__USER_LABEL_PREFIX__=
4202             add_cppflags -D__builtin_memset=memset
4203             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4204             add_cflags   -pds=48    # incompatible redefinition of macro
4205         elif enabled ccc; then
4206             add_ldflags -Wl,-z,now  # calls to libots crash without this
4207         fi
4208         ;;
4209 esac
4210
4211 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4212     add_cppflags '-I\$(SRC_PATH)/compat/float'
4213
4214 esc(){
4215     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4216 }
4217
4218 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4219
4220 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4221
4222 set_default $PATHS_LIST
4223 set_default nm
4224
4225 # we need to build at least one lib type
4226 if ! enabled_any static shared; then
4227     cat <<EOF
4228 At least one library type must be built.
4229 Specify --enable-static to build the static libraries or --enable-shared to
4230 build the shared libraries as well. To only build the shared libraries specify
4231 --disable-static in addition to --enable-shared.
4232 EOF
4233     exit 1
4234 fi
4235
4236 disabled optimizations || check_cflags -fomit-frame-pointer
4237
4238 enable_weak_pic() {
4239     disabled pic && return
4240     enable pic
4241     add_cppflags -DPIC
4242     case "$target_os" in
4243     mingw*|cygwin*)
4244         ;;
4245     *)
4246         add_cflags -fPIC
4247         ;;
4248     esac
4249     add_asflags  -fPIC
4250 }
4251
4252 enabled pic && enable_weak_pic
4253
4254 check_cc <<EOF || die "Symbol mangling check failed."
4255 int ff_extern;
4256 EOF
4257 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4258 extern_prefix=${sym%%ff_extern*}
4259
4260 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4261
4262 _restrict=
4263 for restrict_keyword in restrict __restrict__ __restrict; do
4264     check_cc <<EOF && _restrict=$restrict_keyword && break
4265 void foo(char * $restrict_keyword p);
4266 EOF
4267 done
4268
4269 check_cc <<EOF && enable pragma_deprecated
4270 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4271 EOF
4272
4273 check_cc <<EOF && enable attribute_packed
4274 struct { int x; } __attribute__((packed)) x;
4275 EOF
4276
4277 check_cc <<EOF && enable attribute_may_alias
4278 union { int x; } __attribute__((may_alias)) x;
4279 EOF
4280
4281 check_cc <<EOF || die "endian test failed"
4282 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4283 EOF
4284 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4285
4286 check_gas() {
4287     log "check_gas using '$as' as AS"
4288     # :vararg is used on aarch64, arm and ppc altivec
4289     check_as <<EOF || return 1
4290 .macro m n, y:vararg=0
4291 \n: .int \y
4292 .endm
4293 m x
4294 EOF
4295     # .altmacro is only used in arm asm
4296     ! enabled arm || check_as <<EOF || return 1
4297 .altmacro
4298 EOF
4299     enable gnu_as
4300     return 0
4301 }
4302
4303 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4304     nogas=:
4305     enabled_any arm aarch64 && nogas=die
4306     enabled_all ppc altivec && nogas=warn
4307     as_noop=-v
4308
4309     case $as_type in
4310         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4311         gcc)  gaspp_as_type=gas ;;
4312         *)    gaspp_as_type=$as_type ;;
4313     esac
4314
4315     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4316
4317     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4318         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4319
4320     if ! check_gas ; then
4321         as=${gas:=$as}
4322         check_gas || \
4323             $nogas "GNU assembler not found, install/update gas-preprocessor"
4324     fi
4325
4326     check_as <<EOF && enable as_func
4327 .func test
4328 .endfunc
4329 EOF
4330 fi
4331
4332 check_inline_asm inline_asm_labels '"1:\n"'
4333
4334 if enabled aarch64; then
4335     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4336     # internal assembler in clang 3.3 does not support this instruction
4337     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4338     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4339
4340     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4341
4342 elif enabled alpha; then
4343
4344     check_cflags -mieee
4345
4346 elif enabled arm; then
4347
4348     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4349     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4350     enabled thumb && check_cflags -mthumb || check_cflags -marm
4351
4352     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4353         enable vfp_args
4354     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4355         enable vfp_args
4356     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4357         case "${cross_prefix:-$cc}" in
4358             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4359             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4360 __asm__ (".eabi_attribute 28, 1");
4361 int main(void) { return 0; }
4362 EOF
4363         esac
4364         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4365     fi
4366
4367     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4368     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4369     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4370     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4371     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4372     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4373
4374     [ $target_os = linux ] || [ $target_os = android ] ||
4375         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4376             $ARCH_EXT_LIST_ARM
4377
4378     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4379
4380     check_as <<EOF && enable as_arch_directive
4381 .arch armv7-a
4382 EOF
4383     check_as <<EOF && enable as_dn_directive
4384 ra .dn d0.i16
4385 .unreq ra
4386 EOF
4387     check_as <<EOF && enable as_fpu_directive
4388 .fpu neon
4389 EOF
4390
4391     # llvm's integrated assembler supports .object_arch from llvm 3.5
4392     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4393         check_as <<EOF && enable as_object_arch
4394 .object_arch armv4
4395 EOF
4396
4397     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4398
4399 elif enabled mips; then
4400
4401     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4402
4403     # make sure that only an instruction set is enabled
4404     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4405
4406     if enabled mips64; then
4407         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4408             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4409                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4410     else
4411         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4412             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4413                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4414     fi
4415
4416 elif enabled parisc; then
4417
4418     if enabled gcc; then
4419         case $($cc -dumpversion) in
4420             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4421         esac
4422     fi
4423
4424 elif enabled ppc; then
4425
4426     enable local_aligned_8 local_aligned_16 local_aligned_32
4427
4428     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4429     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4430     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4431     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4432
4433     # AltiVec flags: The FSF version of GCC differs from the Apple version
4434     if enabled altivec; then
4435         check_cflags -maltivec -mabi=altivec &&
4436         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4437         check_cflags -faltivec
4438
4439         # check if our compiler supports Motorola AltiVec C API
4440         check_cc <<EOF || disable altivec
4441 $inc_altivec_h
4442 int main(void) {
4443     vector signed int v1 = (vector signed int) { 0 };
4444     vector signed int v2 = (vector signed int) { 1 };
4445     v1 = vec_add(v1, v2);
4446     return 0;
4447 }
4448 EOF
4449
4450         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4451     fi
4452
4453     if enabled vsx; then
4454         check_cflags -mvsx &&
4455         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4456     fi
4457
4458     if enabled power8; then
4459         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4460     fi
4461
4462 elif enabled x86; then
4463
4464     check_builtin rdtsc    intrin.h   "__rdtsc()"
4465     check_builtin mm_empty mmintrin.h "_mm_empty()"
4466
4467     enable local_aligned_8 local_aligned_16 local_aligned_32
4468
4469     # check whether EBP is available on x86
4470     # As 'i' is stored on the stack, this program will crash
4471     # if the base pointer is used to access it because the
4472     # base pointer is cleared in the inline assembly code.
4473     check_exec_crash <<EOF && enable ebp_available
4474 volatile int i=0;
4475 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4476 return i;
4477 EOF
4478
4479     # check whether EBX is available on x86
4480     check_inline_asm ebx_available '""::"b"(0)' &&
4481         check_inline_asm ebx_available '"":::"%ebx"'
4482
4483     # check whether xmm clobbers are supported
4484     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4485
4486     # check whether binutils is new enough to compile SSSE3/MMXEXT
4487     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4488     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4489
4490     probe_x86asm(){
4491         x86asmexe_probe=$1
4492         if check_cmd $x86asmexe_probe -v; then
4493             x86asmexe=$x86asmexe_probe
4494             x86asm_type=nasm
4495             x86asm_debug="-g -F dwarf"
4496             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4497         elif check_cmd $x86asmexe_probe --version; then
4498             x86asmexe=$x86asmexe_probe
4499             x86asm_type=yasm
4500             x86asm_debug="-g dwarf2"
4501             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4502         fi
4503     }
4504
4505     if ! disabled_any asm mmx x86asm; then
4506         for program in $x86asmexe nasm yasm; do
4507             probe_x86asm $program
4508             test -n "$x86asm_type" && break
4509         done
4510         X86ASMFLAGS="-f $objformat"
4511         enabled pic               && append X86ASMFLAGS "-DPIC"
4512         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4513         case "$objformat" in
4514             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4515         esac
4516
4517         check_x86asm "movbe ecx, [5]" && enable x86asm ||
4518             die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4519         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4520         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4521         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4522         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4523         check_x86asm "CPU amdnop"                      || disable cpunop
4524     fi
4525
4526     case "$cpu" in
4527         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4528             disable fast_clz
4529         ;;
4530     esac
4531
4532 fi
4533
4534 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4535
4536 check_ldflags -Wl,--as-needed
4537
4538 if ! disabled network; then
4539     check_func getaddrinfo $network_extralibs
4540     check_func inet_aton $network_extralibs
4541
4542     check_type netdb.h "struct addrinfo"
4543     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4544     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4545     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4546     check_type poll.h "struct pollfd"
4547     check_type netinet/sctp.h "struct sctp_event_subscribe"
4548     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4549     check_type netinet/in.h "struct sockaddr_in6"
4550     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4551     check_type "sys/types.h sys/socket.h" socklen_t
4552
4553     # Prefer arpa/inet.h over winsock2
4554     if check_header arpa/inet.h ; then
4555         check_func closesocket
4556     elif check_header winsock2.h ; then
4557         check_func_headers winsock2.h closesocket -lws2 &&
4558             network_extralibs="-lws2" ||
4559         { check_func_headers winsock2.h closesocket -lws2_32 &&
4560             network_extralibs="-lws2_32"; } || disable winsock2_h network
4561         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4562
4563         check_type ws2tcpip.h socklen_t
4564         check_type ws2tcpip.h "struct addrinfo"
4565         check_type ws2tcpip.h "struct group_source_req"
4566         check_type ws2tcpip.h "struct ip_mreq_source"
4567         check_type ws2tcpip.h "struct ipv6_mreq"
4568         check_type winsock2.h "struct pollfd"
4569         check_struct winsock2.h "struct sockaddr" sa_len
4570         check_type ws2tcpip.h "struct sockaddr_in6"
4571         check_type ws2tcpip.h "struct sockaddr_storage"
4572     else
4573         disable network
4574     fi
4575 fi
4576
4577 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4578 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4579 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4580 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4581
4582 case "$custom_allocator" in
4583     jemalloc)
4584         # jemalloc by default does not use a prefix
4585         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4586     ;;
4587     tcmalloc)
4588         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4589         malloc_prefix=tc_
4590     ;;
4591 esac
4592
4593 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4594 check_func  ${malloc_prefix}memalign            && enable memalign
4595 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4596
4597 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4598     { check_lib clock_gettime time.h clock_gettime ||
4599       check_lib clock_gettime time.h clock_gettime -lrt; }
4600
4601 check_func  fcntl
4602 check_func  fork
4603 check_func  gethrtime
4604 check_func  getopt
4605 check_func  getrusage
4606 check_func  gettimeofday
4607 check_func  gmtime_r
4608 check_func  isatty
4609 check_func  localtime_r
4610 check_func  mach_absolute_time
4611 check_func  mkstemp
4612 check_func  mmap
4613 check_func  mprotect
4614 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4615 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4616 check_func  sched_getaffinity
4617 check_func  setrlimit
4618 check_func  strerror_r
4619 check_func  sysconf
4620 check_func  sysctl
4621 check_func  usleep
4622
4623 check_func_headers io.h setmode
4624 check_func_headers stdlib.h getenv
4625
4626 check_func_headers windows.h GetProcessAffinityMask
4627 check_func_headers windows.h GetProcessTimes
4628 check_func_headers windows.h GetSystemTimeAsFileTime
4629 check_func_headers windows.h LoadLibrary
4630 check_func_headers windows.h MapViewOfFile
4631 check_func_headers windows.h SetConsoleTextAttribute
4632 check_func_headers windows.h Sleep
4633 check_func_headers windows.h VirtualAlloc
4634 check_struct windows.h "CONDITION_VARIABLE" Ptr
4635
4636 check_header d3d11.h
4637 check_header direct.h
4638 check_header dlfcn.h
4639 check_header dxva.h
4640 check_header dxva2api.h
4641 check_header io.h
4642 check_header mach/mach_time.h
4643 check_header malloc.h
4644 check_header poll.h
4645 check_header sys/mman.h
4646 check_header sys/param.h
4647 check_header sys/resource.h
4648 check_header sys/select.h
4649 check_header sys/time.h
4650 check_header sys/un.h
4651 check_header unistd.h
4652 check_header valgrind/valgrind.h
4653 check_header VideoDecodeAcceleration/VDADecoder.h
4654 check_header windows.h
4655
4656 # it seems there are versions of clang in some distros that try to use the
4657 # gcc headers, which explodes for stdatomic
4658 # so we also check that atomics actually work here
4659 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4660
4661 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4662 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4663 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4664
4665 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4666
4667 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4668 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4669 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4670
4671 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4672 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4673 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4674 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4675 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4676 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4677 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4678 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4679 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4680
4681 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4682
4683 if ! disabled w32threads && ! enabled pthreads; then
4684     check_lib w32threads "windows.h process.h" _beginthreadex
4685 fi
4686
4687 # check for some common methods of building with pthread support
4688 # do this before the optional library checks as some of them require pthreads
4689 if ! disabled pthreads && ! enabled w32threads; then
4690     if check_lib pthreads pthread.h pthread_join -pthread; then
4691         add_cflags -pthread
4692     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4693         add_cflags -pthreads
4694     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4695         :
4696     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4697         :
4698     elif check_func pthread_join; then
4699         enable pthreads
4700     fi
4701 fi
4702
4703 enabled pthreads &&
4704     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4705
4706 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4707 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4708
4709 # On some systems dynamic loading requires no extra linker flags
4710 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4711
4712 check_lib libm math.h sin -lm
4713
4714 atan2f_args=2
4715 ldexpf_args=2
4716 powf_args=2
4717
4718 for func in $MATH_FUNCS; do
4719     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4720 done
4721
4722 # these are off by default, so fail if requested and not available
4723 enabled avisynth          && require_header avisynth/avisynth_c.h
4724 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4725 enabled cuda              && require cuda cuda.h cuInit -lcuda
4726 enabled frei0r            && require_header frei0r.h
4727 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4728 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4729 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4730 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4731 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4732 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4733 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4734 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4735 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4736                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4737                                done || die "ERROR: libgsm not found"; }
4738 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4739 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4740 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4741 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4742 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4743 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4744 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4745 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4746 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4747 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4748 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4749                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4750 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4751 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4752 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4753 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4754 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4755 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4756 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4757 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4758 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4759 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4760 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4761 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4762                              { enabled libvpx_vp8_decoder &&
4763                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4764                                enabled libvpx_vp8_encoder &&
4765                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4766                                enabled libvpx_vp9_decoder &&
4767                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4768                                enabled libvpx_vp9_encoder &&
4769                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4770                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4771                                    die "libvpx enabled but no supported decoders/encoders found"
4772                              }
4773 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4774 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4775 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4776                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4777                              { check_cpp_condition x264.h "X264_MPEG2" &&
4778                                enable libx262; }
4779 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4780                              require_cpp_condition x265.h "X265_BUILD >= 57"
4781 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4782 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4783 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4784                                { ! enabled cross_compile &&
4785                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4786                                  add_ldflags -L/opt/vc/lib/ &&
4787                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4788                                die "ERROR: mmal not found" &&
4789                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4790 enabled omx               && require_header OMX_Core.h
4791 enabled omx_rpi           && { check_header OMX_Core.h ||
4792                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4793                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4794 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4795                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4796                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4797                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4798                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4799                                die "ERROR: openssl not found"; }
4800
4801 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4802
4803 if enabled nvenc; then
4804     require_header nvEncodeAPI.h
4805     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4806 fi
4807
4808 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4809 if enabled avplay; then
4810     CFLAGS_SAVE=$CFLAGS
4811     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4812     sdl_cflags=$pkg_cflags
4813     CFLAGS=$CFLAGS_SAVE
4814 fi
4815
4816 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4817 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4818
4819 check_header linux/fb.h
4820 check_header linux/videodev2.h
4821 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4822
4823 check_header AVFoundation/AVFoundation.h
4824
4825 check_header sys/videoio.h
4826
4827 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4828 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4829 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4830 # w32api 3.12 had it defined wrong
4831 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines