configure: Move x86 assembler sanity check into assembler probe function
[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_fpu_directive
1666     as_func
1667     as_object_arch
1668     asm_mod_q
1669     attribute_may_alias
1670     attribute_packed
1671     blocks_extension
1672     ebp_available
1673     ebx_available
1674     gnu_as
1675     ibm_asm
1676     inline_asm_labels
1677     pragma_deprecated
1678     symver_asm_label
1679     symver_gnu_asm
1680     vfp_args
1681     xform_asm
1682     xmm_clobbers
1683 "
1684
1685 TYPES_LIST="
1686     CONDITION_VARIABLE_Ptr
1687     socklen_t
1688     struct_addrinfo
1689     struct_group_source_req
1690     struct_ip_mreq_source
1691     struct_ipv6_mreq
1692     struct_pollfd
1693     struct_rusage_ru_maxrss
1694     struct_sockaddr_in6
1695     struct_sockaddr_sa_len
1696     struct_sockaddr_storage
1697     struct_v4l2_frmivalenum_discrete
1698 "
1699
1700 HAVE_LIST="
1701     $ARCH_EXT_LIST
1702     $(add_suffix _external $ARCH_EXT_LIST)
1703     $(add_suffix _inline   $ARCH_EXT_LIST)
1704     $ARCH_FEATURES
1705     $BUILTIN_LIST
1706     $HAVE_LIST_CMDLINE
1707     $HAVE_LIST_PUB
1708     $HEADERS_LIST
1709     $INTRINSICS_LIST
1710     $MATH_FUNCS
1711     $SYSTEM_FUNCS
1712     $THREADS_LIST
1713     $TOOLCHAIN_FEATURES
1714     $TYPES_LIST
1715     dos_paths
1716     dxva2_lib
1717     libc_msvcrt
1718     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1719     sdl
1720     section_data_rel_ro
1721     threads
1722     vaapi_drm
1723     vaapi_x11
1724     vdpau_x11
1725 "
1726
1727 # options emitted with CONFIG_ prefix but not available on the command line
1728 CONFIG_EXTRA="
1729     aandcttables
1730     ac3dsp
1731     adts_header
1732     audio_frame_queue
1733     audiodsp
1734     blockdsp
1735     bswapdsp
1736     cabac
1737     dirac_parse
1738     dvprofile
1739     faandct
1740     faanidct
1741     fdctdsp
1742     flacdsp
1743     fmtconvert
1744     g722dsp
1745     gmp
1746     golomb
1747     gplv3
1748     h263dsp
1749     h264chroma
1750     h264dsp
1751     h264parse
1752     h264pred
1753     h264qpel
1754     hevc_ps
1755     hpeldsp
1756     huffman
1757     huffyuvdsp
1758     huffyuvencdsp
1759     idctdsp
1760     iirfilter
1761     imdct15
1762     intrax8
1763     iso_media
1764     ividsp
1765     jpegtables
1766     lgplv3
1767     libx262
1768     libxcb_shape
1769     lpc
1770     lzf
1771     me_cmp
1772     mpeg_er
1773     mpegaudio
1774     mpegaudiodsp
1775     mpegaudioheader
1776     mpegvideo
1777     mpegvideoenc
1778     mss34dsp
1779     pixblockdsp
1780     qpeldsp
1781     qsv
1782     qsvdec
1783     qsvenc
1784     rangecoder
1785     riffdec
1786     riffenc
1787     rtpdec
1788     rtpenc_chain
1789     rv34dsp
1790     sinewin
1791     snappy
1792     srtp
1793     startcode
1794     texturedsp
1795     texturedspenc
1796     tpeldsp
1797     vaapi_encode
1798     vc1dsp
1799     videodsp
1800     vp3dsp
1801     vp56dsp
1802     vp8dsp
1803     wma_freqs
1804     wmv2dsp
1805 "
1806
1807 CMDLINE_SELECT="
1808     $ARCH_EXT_LIST
1809     $CONFIG_LIST
1810     $HAVE_LIST_CMDLINE
1811     $THREADS_LIST
1812     asm
1813     cross_compile
1814     debug
1815     extra_warnings
1816     logging
1817     lto
1818     optimizations
1819     rpath
1820 "
1821
1822 PATHS_LIST="
1823     bindir
1824     datadir
1825     docdir
1826     incdir
1827     libdir
1828     mandir
1829     prefix
1830     shlibdir
1831 "
1832
1833 CMDLINE_SET="
1834     $PATHS_LIST
1835     ar
1836     arch
1837     as
1838     cc
1839     objcc
1840     cpu
1841     cross_prefix
1842     custom_allocator
1843     dep_cc
1844     env
1845     extra_version
1846     host_cc
1847     host_cflags
1848     host_extralibs
1849     host_ld
1850     host_ldflags
1851     host_os
1852     ignore_tests
1853     ld
1854     logfile
1855     malloc_prefix
1856     nm
1857     optflags
1858     pkg_config
1859     pkg_config_flags
1860     random_seed
1861     samples
1862     sysinclude
1863     sysroot
1864     target_exec
1865     target_os
1866     target_path
1867     target_samples
1868     toolchain
1869     x86asmexe
1870 "
1871
1872 CMDLINE_APPEND="
1873     extra_cflags
1874     extra_objcflags
1875     host_cppflags
1876 "
1877
1878 # code dependency declarations
1879
1880 # architecture extensions
1881
1882 armv5te_deps="arm"
1883 armv6_deps="arm"
1884 armv6t2_deps="arm"
1885 armv8_deps="aarch64"
1886 neon_deps_any="aarch64 arm"
1887 intrinsics_neon_deps="neon"
1888 vfp_deps_any="aarch64 arm"
1889 vfpv3_deps="vfp"
1890
1891 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1892
1893 altivec_deps="ppc"
1894 ppc4xx_deps="ppc"
1895 vsx_deps="altivec"
1896 power8_deps="vsx"
1897
1898 cpunop_deps="i686"
1899 x86_64_select="i686"
1900 x86_64_suggest="fast_cmov"
1901
1902 amd3dnow_deps="mmx"
1903 amd3dnowext_deps="amd3dnow"
1904 i686_deps="x86"
1905 mmx_deps="x86"
1906 mmxext_deps="mmx"
1907 sse_deps="mmxext"
1908 sse2_deps="sse"
1909 sse3_deps="sse2"
1910 ssse3_deps="sse3"
1911 sse4_deps="ssse3"
1912 sse42_deps="sse4"
1913 avx_deps="sse42"
1914 xop_deps="avx"
1915 fma3_deps="avx"
1916 fma4_deps="avx"
1917 avx2_deps="avx"
1918
1919 mmx_external_deps="x86asm"
1920 mmx_inline_deps="inline_asm"
1921 mmx_suggest="mmx_external mmx_inline"
1922
1923 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1924     eval dep=\$${ext}_deps
1925     eval ${ext}_external_deps='"${dep}_external"'
1926     eval ${ext}_inline_deps='"${dep}_inline"'
1927     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1928 done
1929
1930 aligned_stack_if_any="aarch64 ppc x86"
1931 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1932 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1933 fast_unaligned_if_any="aarch64 ppc x86"
1934 simd_align_16_if_any="altivec neon sse"
1935 simd_align_32_if_any="avx"
1936
1937 # system capabilities
1938 symver_if_any="symver_asm_label symver_gnu_asm"
1939 valgrind_backtrace_conflict="optimizations"
1940 valgrind_backtrace_deps="valgrind_valgrind_h"
1941
1942 # threading support
1943 atomics_gcc_if="sync_val_compare_and_swap"
1944 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1945 atomics_win32_if="MemoryBarrier"
1946 atomics_native_if_any="$ATOMICS_LIST"
1947 w32threads_deps="atomics_native"
1948 threads_if_any="$THREADS_LIST"
1949
1950 # subsystems
1951 dct_select="rdft"
1952 dirac_parse_select="golomb"
1953 error_resilience_select="me_cmp"
1954 faandct_deps="faan fdctdsp"
1955 faanidct_deps="faan idctdsp"
1956 h264dsp_select="startcode"
1957 hevc_ps_select="golomb"
1958 intrax8_select="blockdsp idctdsp"
1959 mdct_select="fft"
1960 rdft_select="fft"
1961 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1962 mpeg_er_select="error_resilience"
1963 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1964 mpegaudiodsp_select="dct"
1965 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1966 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1967 vc1dsp_select="h264chroma qpeldsp startcode"
1968
1969 # decoders / encoders
1970 aac_decoder_select="adts_header imdct15 mdct sinewin"
1971 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1972 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1973 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1974 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1975 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1976 adpcm_g722_decoder_select="g722dsp"
1977 adpcm_g722_encoder_select="g722dsp"
1978 aic_decoder_select="golomb idctdsp"
1979 alac_encoder_select="lpc"
1980 als_decoder_select="bswapdsp"
1981 amrnb_decoder_select="lsp"
1982 amrwb_decoder_select="lsp"
1983 amv_decoder_select="sp5x_decoder"
1984 ape_decoder_select="bswapdsp"
1985 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1986 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1987 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1988 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1989 atrac1_decoder_select="mdct sinewin"
1990 atrac3_decoder_select="mdct"
1991 atrac3p_decoder_select="mdct sinewin"
1992 bink_decoder_select="blockdsp hpeldsp"
1993 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1994 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1995 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1996 cllc_decoder_select="bswapdsp"
1997 comfortnoise_encoder_select="lpc"
1998 cook_decoder_select="audiodsp mdct sinewin"
1999 cscd_decoder_select="lzo"
2000 cscd_decoder_suggest="zlib"
2001 dca_decoder_select="fmtconvert mdct"
2002 dds_decoder_select="texturedsp"
2003 dnxhd_decoder_select="blockdsp idctdsp"
2004 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2005 dvvideo_decoder_select="dvprofile idctdsp"
2006 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2007 dxa_decoder_deps="zlib"
2008 dxv_decoder_select="lzf texturedsp"
2009 eac3_decoder_select="ac3_decoder"
2010 eac3_encoder_select="ac3_encoder"
2011 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2012 eatgq_decoder_select="aandcttables idctdsp"
2013 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2014 exr_decoder_deps="zlib"
2015 ffv1_decoder_select="rangecoder"
2016 ffv1_encoder_select="rangecoder"
2017 ffvhuff_decoder_select="huffyuv_decoder"
2018 ffvhuff_encoder_select="huffyuv_encoder"
2019 fic_decoder_select="golomb"
2020 flac_decoder_select="flacdsp"
2021 flac_encoder_select="bswapdsp flacdsp lpc"
2022 flashsv_decoder_deps="zlib"
2023 flashsv_encoder_deps="zlib"
2024 flashsv2_decoder_deps="zlib"
2025 flv_decoder_select="h263_decoder"
2026 flv_encoder_select="h263_encoder"
2027 fourxm_decoder_select="blockdsp bswapdsp"
2028 fraps_decoder_select="bswapdsp huffman"
2029 g2m_decoder_deps="zlib"
2030 g2m_decoder_select="blockdsp idctdsp jpegtables"
2031 h261_decoder_select="mpeg_er mpegvideo"
2032 h261_encoder_select="aandcttables mpegvideoenc"
2033 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2034 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2035 h263i_decoder_select="h263_decoder"
2036 h263p_encoder_select="h263_encoder"
2037 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2038 h264_decoder_suggest="error_resilience"
2039 hap_decoder_select="snappy texturedsp"
2040 hap_encoder_deps="libsnappy"
2041 hap_encoder_select="texturedspenc"
2042 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2043 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2044 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2045 iac_decoder_select="imc_decoder"
2046 imc_decoder_select="bswapdsp fft mdct sinewin"
2047 indeo3_decoder_select="hpeldsp"
2048 indeo4_decoder_select="ividsp"
2049 indeo5_decoder_select="ividsp"
2050 interplay_video_decoder_select="hpeldsp"
2051 jpegls_decoder_select="mjpeg_decoder"
2052 jv_decoder_select="blockdsp"
2053 lagarith_decoder_select="huffyuvdsp"
2054 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2055 magicyuv_decoder_select="huffyuvdsp"
2056 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2057 metasound_decoder_select="lsp mdct sinewin"
2058 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2059 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2060 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2061 mjpegb_decoder_select="mjpeg_decoder"
2062 mlp_decoder_select="mlp_parser"
2063 motionpixels_decoder_select="bswapdsp"
2064 mp1_decoder_select="mpegaudio"
2065 mp1float_decoder_select="mpegaudio"
2066 mp2_decoder_select="mpegaudio"
2067 mp2float_decoder_select="mpegaudio"
2068 mp3_decoder_select="mpegaudio"
2069 mp3adu_decoder_select="mpegaudio"
2070 mp3adufloat_decoder_select="mpegaudio"
2071 mp3float_decoder_select="mpegaudio"
2072 mp3on4_decoder_select="mpegaudio"
2073 mp3on4float_decoder_select="mpegaudio"
2074 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2075 mpc8_decoder_select="mpegaudiodsp"
2076 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2077 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2078 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2079 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2080 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2081 mpeg4_encoder_select="h263_encoder"
2082 msa1_decoder_select="mss34dsp"
2083 msmpeg4v1_decoder_select="h263_decoder"
2084 msmpeg4v2_decoder_select="h263_decoder"
2085 msmpeg4v2_encoder_select="h263_encoder"
2086 msmpeg4v3_decoder_select="h263_decoder"
2087 msmpeg4v3_encoder_select="h263_encoder"
2088 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2089 mts2_decoder_select="mss34dsp"
2090 mxpeg_decoder_select="mjpeg_decoder"
2091 nellymoser_decoder_select="mdct sinewin"
2092 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2093 nuv_decoder_select="idctdsp lzo"
2094 on2avc_decoder_select="mdct"
2095 opus_decoder_deps="avresample"
2096 opus_decoder_select="imdct15"
2097 png_decoder_deps="zlib"
2098 png_encoder_deps="zlib"
2099 png_encoder_select="huffyuvencdsp"
2100 prores_decoder_select="idctdsp"
2101 prores_encoder_select="fdctdsp"
2102 qcelp_decoder_select="lsp"
2103 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2104 ra_144_encoder_select="audio_frame_queue lpc"
2105 ralf_decoder_select="golomb"
2106 rscc_decoder_deps="zlib"
2107 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2108 rv10_encoder_select="h263_encoder"
2109 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2110 rv20_encoder_select="h263_encoder"
2111 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2112 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2113 screenpresso_decoder_deps="zlib"
2114 sipr_decoder_select="lsp"
2115 sp5x_decoder_select="mjpeg_decoder"
2116 svq1_decoder_select="hpeldsp"
2117 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2118 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2119 svq3_decoder_suggest="zlib"
2120 tak_decoder_select="audiodsp"
2121 tdsc_decoder_deps="zlib"
2122 tdsc_decoder_select="mjpeg_decoder"
2123 theora_decoder_select="vp3_decoder"
2124 thp_decoder_select="mjpeg_decoder"
2125 tiff_decoder_suggest="zlib"
2126 tiff_encoder_suggest="zlib"
2127 truehd_decoder_select="mlp_decoder"
2128 truemotion2_decoder_select="bswapdsp"
2129 truespeech_decoder_select="bswapdsp"
2130 tscc_decoder_deps="zlib"
2131 txd_decoder_select="texturedsp"
2132 twinvq_decoder_select="mdct lsp sinewin"
2133 utvideo_decoder_select="bswapdsp huffyuvdsp"
2134 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2135 vble_decoder_select="huffyuvdsp"
2136 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2137 vc1image_decoder_select="vc1_decoder"
2138 vorbis_decoder_select="mdct"
2139 vorbis_encoder_select="mdct"
2140 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2141 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2142 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2143 vp6a_decoder_select="vp6_decoder"
2144 vp6f_decoder_select="vp6_decoder"
2145 vp7_decoder_select="h264pred videodsp vp8dsp"
2146 vp8_decoder_select="h264pred videodsp vp8dsp"
2147 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2148 webp_decoder_select="vp8_decoder"
2149 wmapro_decoder_select="mdct sinewin wma_freqs"
2150 wmav1_decoder_select="mdct sinewin wma_freqs"
2151 wmav1_encoder_select="mdct sinewin wma_freqs"
2152 wmav2_decoder_select="mdct sinewin wma_freqs"
2153 wmav2_encoder_select="mdct sinewin wma_freqs"
2154 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2155 wmv1_decoder_select="h263_decoder"
2156 wmv1_encoder_select="h263_encoder"
2157 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2158 wmv2_encoder_select="h263_encoder wmv2dsp"
2159 wmv3_decoder_select="vc1_decoder"
2160 wmv3image_decoder_select="wmv3_decoder"
2161 zerocodec_decoder_deps="zlib"
2162 zlib_decoder_deps="zlib"
2163 zlib_encoder_deps="zlib"
2164 zmbv_decoder_deps="zlib"
2165 zmbv_encoder_deps="zlib"
2166
2167 # hardware accelerators
2168 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2169 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2170 dxva2_lib_deps="dxva2"
2171 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2172 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2173
2174 h263_vaapi_hwaccel_deps="vaapi"
2175 h263_vaapi_hwaccel_select="h263_decoder"
2176 h264_d3d11va_hwaccel_deps="d3d11va"
2177 h264_d3d11va_hwaccel_select="h264_decoder"
2178 h264_dxva2_hwaccel_deps="dxva2"
2179 h264_dxva2_hwaccel_select="h264_decoder"
2180 h264_mmal_hwaccel_deps="mmal"
2181 h264_qsv_hwaccel_deps="libmfx"
2182 h264_vaapi_hwaccel_deps="vaapi"
2183 h264_vaapi_hwaccel_select="h264_decoder"
2184 h264_vda_hwaccel_deps="vda"
2185 h264_vda_hwaccel_select="h264_decoder"
2186 h264_vda_old_hwaccel_deps="vda"
2187 h264_vda_old_hwaccel_select="h264_decoder"
2188 h264_vdpau_hwaccel_deps="vdpau"
2189 h264_vdpau_hwaccel_select="h264_decoder"
2190 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2191 hevc_d3d11va_hwaccel_select="hevc_decoder"
2192 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2193 hevc_dxva2_hwaccel_select="hevc_decoder"
2194 hevc_qsv_hwaccel_deps="libmfx"
2195 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2196 hevc_vaapi_hwaccel_select="hevc_decoder"
2197 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2198 hevc_vdpau_hwaccel_select="hevc_decoder"
2199 mpeg1_vdpau_hwaccel_deps="vdpau"
2200 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2201 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2202 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2203 mpeg2_dxva2_hwaccel_deps="dxva2"
2204 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2205 mpeg2_mmal_hwaccel_deps="mmal"
2206 mpeg2_qsv_hwaccel_deps="libmfx"
2207 mpeg2_vaapi_hwaccel_deps="vaapi"
2208 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2209 mpeg2_vdpau_hwaccel_deps="vdpau"
2210 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2211 mpeg4_vaapi_hwaccel_deps="vaapi"
2212 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2213 mpeg4_vdpau_hwaccel_deps="vdpau"
2214 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2215 vc1_d3d11va_hwaccel_deps="d3d11va"
2216 vc1_d3d11va_hwaccel_select="vc1_decoder"
2217 vc1_dxva2_hwaccel_deps="dxva2"
2218 vc1_dxva2_hwaccel_select="vc1_decoder"
2219 vc1_mmal_hwaccel_deps="mmal"
2220 vc1_qsv_hwaccel_deps="libmfx"
2221 vc1_vaapi_hwaccel_deps="vaapi"
2222 vc1_vaapi_hwaccel_select="vc1_decoder"
2223 vc1_vdpau_hwaccel_deps="vdpau"
2224 vc1_vdpau_hwaccel_select="vc1_decoder"
2225 vp8_qsv_hwaccel_deps="libmfx"
2226 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2227 vp8_vaapi_hwaccel_select="vp8_decoder"
2228 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2229 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2230 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2231 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2232
2233 # hardware-accelerated codecs
2234 nvenc_deps_any="libdl LoadLibrary"
2235 omx_deps="libdl pthreads"
2236 omx_rpi_select="omx"
2237 qsvdec_select="qsv"
2238 qsvenc_select="qsv"
2239 vaapi_encode_deps="vaapi"
2240
2241 hwupload_cuda_filter_deps="cuda"
2242 scale_npp_filter_deps="cuda libnpp"
2243
2244 h264_mmal_decoder_deps="mmal"
2245 h264_nvenc_encoder_deps="nvenc"
2246 h264_omx_encoder_deps="omx"
2247 h264_qsv_decoder_deps="libmfx"
2248 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2249 h264_qsv_encoder_deps="libmfx"
2250 h264_qsv_encoder_select="qsvenc"
2251 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2252 h264_vaapi_encoder_select="vaapi_encode golomb"
2253 hevc_nvenc_encoder_deps="nvenc"
2254 hevc_qsv_decoder_deps="libmfx"
2255 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2256 hevc_qsv_encoder_deps="libmfx"
2257 hevc_qsv_encoder_select="hevc_ps qsvenc"
2258 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2259 hevc_vaapi_encoder_select="vaapi_encode golomb"
2260 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2261 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2262 mpeg2_mmal_decoder_deps="mmal"
2263 mpeg2_qsv_decoder_deps="libmfx"
2264 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2265 mpeg2_qsv_encoder_deps="libmfx"
2266 mpeg2_qsv_encoder_select="qsvenc"
2267 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2268 mpeg2_vaapi_encoder_select="vaapi_encode"
2269 mpeg4_omx_encoder_deps="omx"
2270 vc1_mmal_decoder_deps="mmal"
2271 vc1_qsv_decoder_deps="libmfx"
2272 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2273 vp8_qsv_decoder_deps="libmfx"
2274 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2275 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2276 vp8_vaapi_encoder_select="vaapi_encode"
2277 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2278 vp9_vaapi_encoder_select="vaapi_encode"
2279
2280 nvenc_h264_encoder_select="h264_nvenc_encoder"
2281 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2282
2283 # parsers
2284 aac_parser_select="adts_header"
2285 h264_parser_select="golomb h264dsp h264parse"
2286 hevc_parser_select="hevc_ps"
2287 mpegaudio_parser_select="mpegaudioheader"
2288 mpegvideo_parser_select="mpegvideo"
2289 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2290 vc1_parser_select="vc1dsp"
2291
2292 # bitstream_filters
2293 aac_adtstoasc_bsf_select="adts_header"
2294 mjpeg2jpeg_bsf_select="jpegtables"
2295
2296 # external libraries
2297 avisynth_deps="LoadLibrary"
2298 avxsynth_deps="libdl"
2299 avisynth_demuxer_deps_any="avisynth avxsynth"
2300 avisynth_demuxer_select="riffdec"
2301 libdcadec_decoder_deps="libdcadec"
2302 libfaac_encoder_deps="libfaac"
2303 libfaac_encoder_select="audio_frame_queue"
2304 libfdk_aac_decoder_deps="libfdk_aac"
2305 libfdk_aac_encoder_deps="libfdk_aac"
2306 libfdk_aac_encoder_select="audio_frame_queue"
2307 libgsm_decoder_deps="libgsm"
2308 libgsm_encoder_deps="libgsm"
2309 libgsm_ms_decoder_deps="libgsm"
2310 libgsm_ms_encoder_deps="libgsm"
2311 libilbc_decoder_deps="libilbc"
2312 libilbc_encoder_deps="libilbc"
2313 libkvazaar_encoder_deps="libkvazaar"
2314 libmp3lame_encoder_deps="libmp3lame"
2315 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2316 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2317 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2318 libopencore_amrnb_encoder_select="audio_frame_queue"
2319 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2320 libopenh264_decoder_deps="libopenh264"
2321 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2322 libopenh264_encoder_deps="libopenh264"
2323 libopenjpeg_decoder_deps="libopenjpeg"
2324 libopenjpeg_encoder_deps="libopenjpeg"
2325 libopus_decoder_deps="libopus"
2326 libopus_encoder_deps="libopus"
2327 libopus_encoder_select="audio_frame_queue"
2328 libschroedinger_decoder_deps="libschroedinger"
2329 libschroedinger_encoder_deps="libschroedinger"
2330 libspeex_decoder_deps="libspeex"
2331 libspeex_encoder_deps="libspeex"
2332 libspeex_encoder_select="audio_frame_queue"
2333 libtheora_encoder_deps="libtheora"
2334 libtwolame_encoder_deps="libtwolame"
2335 libvo_aacenc_encoder_deps="libvo_aacenc"
2336 libvo_aacenc_encoder_select="audio_frame_queue"
2337 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2338 libvorbis_encoder_deps="libvorbis"
2339 libvorbis_encoder_select="audio_frame_queue"
2340 libvpx_vp8_decoder_deps="libvpx"
2341 libvpx_vp8_encoder_deps="libvpx"
2342 libvpx_vp9_decoder_deps="libvpx"
2343 libvpx_vp9_encoder_deps="libvpx"
2344 libwavpack_encoder_deps="libwavpack"
2345 libwavpack_encoder_select="audio_frame_queue"
2346 libwebp_encoder_deps="libwebp"
2347 libx262_encoder_deps="libx262"
2348 libx264_encoder_deps="libx264"
2349 libx265_encoder_deps="libx265"
2350 libxavs_encoder_deps="libxavs"
2351 libxvid_encoder_deps="libxvid mkstemp"
2352
2353 # demuxers / muxers
2354 ac3_demuxer_select="ac3_parser"
2355 asf_demuxer_select="riffdec"
2356 asf_muxer_select="riffenc"
2357 asf_stream_muxer_select="asf_muxer"
2358 avi_demuxer_select="iso_media riffdec"
2359 avi_muxer_select="riffenc"
2360 caf_demuxer_select="iso_media riffdec"
2361 dash_muxer_select="mp4_muxer"
2362 dirac_demuxer_select="dirac_parser"
2363 dv_demuxer_select="dvprofile"
2364 dv_muxer_select="dvprofile"
2365 dxa_demuxer_select="riffdec"
2366 eac3_demuxer_select="ac3_parser"
2367 f4v_muxer_select="mov_muxer"
2368 flac_demuxer_select="flac_parser"
2369 hds_muxer_select="flv_muxer"
2370 hls_muxer_select="mpegts_muxer"
2371 ipod_muxer_select="mov_muxer"
2372 ismv_muxer_select="mov_muxer"
2373 matroska_audio_muxer_select="matroska_muxer"
2374 matroska_demuxer_select="iso_media riffdec"
2375 matroska_demuxer_suggest="bzlib lzo zlib"
2376 matroska_muxer_select="iso_media riffenc"
2377 mmf_muxer_select="riffenc"
2378 mov_demuxer_select="iso_media riffdec"
2379 mov_demuxer_suggest="zlib"
2380 mov_muxer_select="iso_media riffenc rtpenc_chain"
2381 mp3_demuxer_select="mpegaudio_parser"
2382 mp3_muxer_select="mpegaudioheader"
2383 mp4_muxer_select="mov_muxer"
2384 mpegts_demuxer_select="iso_media"
2385 mpegts_muxer_select="adts_muxer latm_muxer"
2386 mpegtsraw_demuxer_select="mpegts_demuxer"
2387 mxf_d10_muxer_select="mxf_muxer"
2388 nut_muxer_select="riffenc"
2389 nuv_demuxer_select="riffdec"
2390 oga_muxer_select="ogg_muxer"
2391 ogg_demuxer_select="dirac_parse"
2392 opus_muxer_select="ogg_muxer"
2393 psp_muxer_select="mov_muxer"
2394 rtp_demuxer_select="sdp_demuxer"
2395 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2396 rtsp_demuxer_select="http_protocol rtpdec"
2397 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2398 sap_demuxer_select="sdp_demuxer"
2399 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2400 sdp_demuxer_select="rtpdec"
2401 smoothstreaming_muxer_select="ismv_muxer"
2402 spdif_demuxer_select="adts_header"
2403 spdif_muxer_select="adts_header"
2404 spx_muxer_select="ogg_muxer"
2405 swf_demuxer_suggest="zlib"
2406 tak_demuxer_select="tak_parser"
2407 tg2_muxer_select="mov_muxer"
2408 tgp_muxer_select="mov_muxer"
2409 w64_demuxer_select="wav_demuxer"
2410 wav_demuxer_select="riffdec"
2411 wav_muxer_select="riffenc"
2412 webm_muxer_select="iso_media riffenc"
2413 wtv_demuxer_select="mpegts_demuxer riffdec"
2414 xmv_demuxer_select="riffdec"
2415 xwma_demuxer_select="riffdec"
2416
2417 # indevs / outdevs
2418 alsa_indev_deps="alsa"
2419 alsa_outdev_deps="alsa"
2420 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2421 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2422 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2423 dv1394_indev_deps="dv1394"
2424 dv1394_indev_select="dv_demuxer"
2425 fbdev_indev_deps="linux_fb_h"
2426 jack_indev_deps="libjack"
2427 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2428 libcdio_indev_deps="libcdio"
2429 libdc1394_indev_deps="libdc1394"
2430 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2431 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2432 pulse_indev_deps="libpulse"
2433 sndio_indev_deps="sndio"
2434 sndio_outdev_deps="sndio"
2435 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2436 vfwcap_indev_deps="vfw32 vfwcap_defines"
2437 xcbgrab_indev_deps="libxcb libxcb_shape"
2438 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2439
2440 # protocols
2441 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2442 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2443 ffrtmpcrypt_protocol_select="tcp_protocol"
2444 ffrtmphttp_protocol_conflict="librtmp_protocol"
2445 ffrtmphttp_protocol_select="http_protocol"
2446 gopher_protocol_select="network"
2447 http_protocol_select="tcp_protocol"
2448 http_protocol_suggest="zlib"
2449 httpproxy_protocol_select="tcp_protocol"
2450 httpproxy_protocol_suggest="zlib"
2451 https_protocol_select="tls_protocol"
2452 https_protocol_suggest="zlib"
2453 icecast_protocol_select="http_protocol"
2454 librtmp_protocol_deps="librtmp"
2455 librtmpe_protocol_deps="librtmp"
2456 librtmps_protocol_deps="librtmp"
2457 librtmpt_protocol_deps="librtmp"
2458 librtmpte_protocol_deps="librtmp"
2459 mmsh_protocol_select="http_protocol"
2460 mmst_protocol_select="network"
2461 rtmp_protocol_conflict="librtmp_protocol"
2462 rtmp_protocol_select="tcp_protocol"
2463 rtmp_protocol_suggest="zlib"
2464 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2465 rtmpe_protocol_suggest="zlib"
2466 rtmps_protocol_conflict="librtmp_protocol"
2467 rtmps_protocol_select="tls_protocol"
2468 rtmps_protocol_suggest="zlib"
2469 rtmpt_protocol_select="ffrtmphttp_protocol"
2470 rtmpt_protocol_suggest="zlib"
2471 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2472 rtmpte_protocol_suggest="zlib"
2473 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2474 rtmpts_protocol_suggest="zlib"
2475 rtp_protocol_select="udp_protocol"
2476 sctp_protocol_deps="struct_sctp_event_subscribe"
2477 sctp_protocol_select="network"
2478 srtp_protocol_select="rtp_protocol srtp"
2479 tcp_protocol_select="network"
2480 tls_protocol_deps_any="gnutls openssl"
2481 tls_protocol_select="tcp_protocol"
2482 udp_protocol_select="network"
2483 unix_protocol_deps="sys_un_h"
2484 unix_protocol_select="network"
2485
2486 # filters
2487 asyncts_filter_deps="avresample"
2488 blackframe_filter_deps="gpl"
2489 boxblur_filter_deps="gpl"
2490 bs2b_filter_deps="libbs2b"
2491 cropdetect_filter_deps="gpl"
2492 deinterlace_qsv_filter_deps="libmfx"
2493 deinterlace_vaapi_filter_deps="vaapi"
2494 delogo_filter_deps="gpl"
2495 drawtext_filter_deps="libfreetype"
2496 drawtext_filter_suggest="libfontconfig"
2497 frei0r_filter_deps="frei0r libdl"
2498 frei0r_src_filter_deps="frei0r libdl"
2499 hdcd_filter_deps="libhdcd"
2500 hqdn3d_filter_deps="gpl"
2501 interlace_filter_deps="gpl"
2502 movie_filter_deps="avcodec avformat"
2503 ocv_filter_deps="libopencv"
2504 resample_filter_deps="avresample"
2505 scale_filter_deps="swscale"
2506 scale_qsv_filter_deps="libmfx"
2507 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2508
2509 # examples
2510 decode_audio_example_deps="avcodec avutil"
2511 decode_video_example_deps="avcodec avutil"
2512 encode_audio_example_deps="avcodec avutil"
2513 encode_video_example_deps="avcodec avutil"
2514 filter_audio_example_deps="avfilter avutil"
2515 metadata_example_deps="avformat avutil"
2516 output_example_deps="avcodec avformat avresample avutil swscale"
2517 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2518 transcode_aac_example_deps="avcodec avformat avresample"
2519
2520 # EXTRALIBS_LIST
2521 cpu_init_extralibs="pthreads_extralibs"
2522 cws2fws_extralibs="zlib_extralibs"
2523
2524 # libraries, in linking order
2525 avcodec_deps="avutil"
2526 avcodec_select="null_bsf"
2527 avdevice_deps="avformat avcodec avutil"
2528 avfilter_deps="avutil"
2529 avformat_deps="avcodec avutil"
2530 avformat_suggest="network"
2531 avresample_deps="avutil"
2532 swscale_deps="avutil"
2533
2534 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2535 avdevice_extralibs="libm_extralibs"
2536 avformat_extralibs="libm_extralibs"
2537 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2538 avresample_extralibs="libm_extralibs"
2539 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"
2540 swscale_extralibs="libm_extralibs"
2541
2542 # programs
2543 avconv_deps="avcodec avfilter avformat avresample swscale"
2544 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2545                fps_filter null_filter resample_filter scale_filter
2546                trim_filter"
2547 avconv_suggest="dxva2_lib ole32 psapi shell32"
2548 avplay_deps="avcodec avfilter avformat avresample sdl"
2549 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2550 avplay_suggest="shell32"
2551 avprobe_deps="avcodec avformat"
2552 avprobe_suggest="shell32"
2553
2554 # documentation
2555 pod2man_deps="doc"
2556 texi2html_deps="doc"
2557
2558 # default parameters
2559
2560 logfile="avbuild/config.log"
2561
2562 # installation paths
2563 prefix_default="/usr/local"
2564 bindir_default='${prefix}/bin'
2565 datadir_default='${prefix}/share/avconv'
2566 docdir_default='${prefix}/share/doc/libav'
2567 incdir_default='${prefix}/include'
2568 libdir_default='${prefix}/lib'
2569 mandir_default='${prefix}/share/man'
2570 shlibdir_default="$libdir_default"
2571
2572 # toolchain
2573 ar_default="ar"
2574 cc_default="gcc"
2575 host_cc_default="gcc"
2576 x86asmexe_default="nasm"
2577 ln_s="ln -s -f"
2578 nm_default="nm -g"
2579 pkg_config_default=pkg-config
2580 ranlib="ranlib"
2581 strip="strip"
2582 version_script='--version-script'
2583
2584 # machine
2585 arch_default=$(uname -m)
2586 cpu="generic"
2587 intrinsics="none"
2588
2589 # OS
2590 target_os_default=$(tolower $(uname -s))
2591 host_os=$target_os_default
2592
2593 # configurable options
2594 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2595
2596 enable asm
2597 enable debug
2598 enable doc
2599 enable faan faandct faanidct
2600 enable optimizations
2601 enable safe_bitstream_reader
2602 enable static
2603 enable swscale_alpha
2604 enable valgrind_backtrace
2605
2606 # By default, enable only those hwaccels that have no external dependencies.
2607 enable d3d11va dxva2 vda vdpau
2608
2609 # internal components are enabled by default
2610 enable $EXTRALIBS_LIST
2611
2612 # Avoid external, non-system, libraries getting enabled by dependency resolution
2613 disable $EXTERNAL_LIBRARY_LIST
2614
2615 # build settings
2616 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2617 LIBPREF="lib"
2618 LIBSUF=".a"
2619 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2620 SLIBPREF="lib"
2621 SLIBSUF=".so"
2622 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2623 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2624 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2625 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2626 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2627 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2628 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2629
2630 asflags_filter=echo
2631 cflags_filter=echo
2632 ldflags_filter=echo
2633
2634 AS_C='-c'
2635 AS_O='-o $@'
2636 CC_C='-c'
2637 CC_E='-E -o $@'
2638 CC_O='-o $@'
2639 OBJCC_C='-c'
2640 OBJCC_E='-E -o $@'
2641 OBJCC_O='-o $@'
2642 X86ASM_O='-o $@'
2643 LD_O='-o $@'
2644 LD_LIB='-l%'
2645 LD_PATH='-L'
2646 HOSTCC_C='-c'
2647 HOSTCC_E='-E -o $@'
2648 HOSTCC_O='-o $@'
2649 HOSTLD_O='-o $@'
2650
2651 host_extralibs='-lm'
2652 host_cflags_filter=echo
2653 host_ldflags_filter=echo
2654
2655 target_path='$(CURDIR)'
2656
2657 # since the object filename is not given with the -MM flag, the compiler
2658 # is only able to print the basename, and we must add the path ourselves
2659 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2660 DEPFLAGS='-MM'
2661
2662 mkdir -p avbuild
2663
2664 # find source path
2665 if test -f configure; then
2666     source_path=.
2667 else
2668     source_path=$(cd $(dirname "$0"); pwd)
2669     echo "$source_path" | grep -q '[[:blank:]]' &&
2670         die "Out of tree builds are impossible with whitespace in source path."
2671     test -e "$source_path/config.h" &&
2672         die "Out of tree builds are impossible with config.h in source dir."
2673 fi
2674
2675 for v in "$@"; do
2676     r=${v#*=}
2677     l=${v%"$r"}
2678     r=$(sh_quote "$r")
2679     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2680 done
2681
2682 find_things(){
2683     thing=$1
2684     pattern=$2
2685     file=$source_path/$3
2686     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2687 }
2688
2689 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2690 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2691 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2692 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2693 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2694 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2695 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2696 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2697 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2698
2699 find_things_extern(){
2700     thing=$1
2701     pattern=$2
2702     file=$source_path/$3
2703     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2704 }
2705
2706 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2707 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2708
2709 AVCODEC_COMPONENTS_LIST="
2710     $BSF_LIST
2711     $DECODER_LIST
2712     $ENCODER_LIST
2713     $HWACCEL_LIST
2714     $PARSER_LIST
2715 "
2716
2717 AVDEVICE_COMPONENTS_LIST="
2718     $INDEV_LIST
2719     $OUTDEV_LIST
2720 "
2721
2722 AVFILTER_COMPONENTS_LIST="
2723     $FILTER_LIST
2724 "
2725
2726 AVFORMAT_COMPONENTS_LIST="
2727     $DEMUXER_LIST
2728     $MUXER_LIST
2729     $PROTOCOL_LIST
2730 "
2731
2732 ALL_COMPONENTS="
2733     $AVCODEC_COMPONENTS_LIST
2734     $AVDEVICE_COMPONENTS_LIST
2735     $AVFILTER_COMPONENTS_LIST
2736     $AVFORMAT_COMPONENTS_LIST
2737 "
2738
2739 for n in $COMPONENT_LIST; do
2740     v=$(toupper ${n%s})_LIST
2741     eval enable \$$v
2742     eval ${n}_if_any="\$$v"
2743 done
2744
2745 enable $ARCH_EXT_LIST
2746
2747 die_unknown(){
2748     echo "Unknown option \"$1\"."
2749     echo "See $0 --help for available options."
2750     exit 1
2751 }
2752
2753 print_3_columns() {
2754     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2755 }
2756
2757 show_list() {
2758     suffix=_$1
2759     shift
2760     echo $* | sed s/$suffix//g | print_3_columns
2761     exit 0
2762 }
2763
2764 rand_list(){
2765     IFS=', '
2766     set -- $*
2767     unset IFS
2768     for thing; do
2769         comp=${thing%:*}
2770         prob=${thing#$comp}
2771         prob=${prob#:}
2772         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2773         echo "prob ${prob:-0.5}"
2774         printf '%s\n' $comp
2775     done
2776 }
2777
2778 do_random(){
2779     action=$1
2780     shift
2781     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2782     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2783 }
2784
2785 for opt do
2786     optval="${opt#*=}"
2787     case "$opt" in
2788         --extra-ldflags=*)
2789             add_ldflags $optval
2790         ;;
2791         --extra-ldexeflags=*)
2792             add_ldexeflags $optval
2793         ;;
2794         --extra-libs=*)
2795             add_extralibs $optval
2796         ;;
2797         --disable-devices)
2798             disable $INDEV_LIST $OUTDEV_LIST
2799         ;;
2800         --enable-debug=*)
2801             debuglevel="$optval"
2802         ;;
2803         --disable-programs)
2804             disable $PROGRAM_LIST
2805         ;;
2806         --disable-everything)
2807             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2808         ;;
2809         --disable-all)
2810             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2811             disable $LIBRARY_LIST $PROGRAM_LIST doc
2812         ;;
2813         --enable-random|--disable-random)
2814             action=${opt%%-random}
2815             do_random ${action#--} $COMPONENT_LIST
2816         ;;
2817         --enable-random=*|--disable-random=*)
2818             action=${opt%%-random=*}
2819             do_random ${action#--} $optval
2820         ;;
2821         --enable-*=*|--disable-*=*)
2822             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2823             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2824             eval list=\$$(toupper $thing)_LIST
2825             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2826             $action $(filter "$name" $list)
2827         ;;
2828         --enable-avserver|--disable-avserver*)
2829             warn "avserver has been removed, the ${opt} option is only"\
2830                  "provided for compatibility and will be removed in the future"
2831         ;;
2832         --enable-yasm|--disable-yasm)
2833             warn "The ${opt} option is only provided for compatibility and will be\n"\
2834                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2835             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2836         ;;
2837         --enable-?*|--disable-?*)
2838             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2839             if is_in $option $COMPONENT_LIST; then
2840                 test $action = disable && action=unset
2841                 eval $action \$$(toupper ${option%s})_LIST
2842             elif is_in $option $CMDLINE_SELECT; then
2843                 $action $option
2844             else
2845                 die_unknown $opt
2846             fi
2847         ;;
2848         --list-*)
2849             NAME="${opt#--list-}"
2850             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2851             NAME=${NAME%s}
2852             eval show_list $NAME \$$(toupper $NAME)_LIST
2853         ;;
2854         --help|-h) show_help
2855         ;;
2856         --quiet|-q) quiet=yes
2857         ;;
2858         *)
2859             optname="${opt%%=*}"
2860             optname="${optname#--}"
2861             optname=$(echo "$optname" | sed 's/-/_/g')
2862             if is_in $optname $CMDLINE_SET; then
2863                 eval $optname='$optval'
2864             elif is_in $optname $CMDLINE_APPEND; then
2865                 append $optname "$optval"
2866             else
2867                 die_unknown $opt
2868             fi
2869         ;;
2870     esac
2871 done
2872
2873 for e in $env; do
2874     eval "export $e"
2875 done
2876
2877 disabled logging && logfile=/dev/null
2878
2879 # Die early if licensing-related configure options are incompatible.
2880 die_license_disabled() {
2881     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2882 }
2883
2884 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2885 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2886 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2887
2888 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2889
2890 # Disable all the library-specific components if the library itself
2891 # is disabled, see AVCODEC_LIST and following _LIST variables.
2892
2893 disable_components(){
2894     disabled ${1} && disable $(
2895         eval components="\$$(toupper ${1})_COMPONENTS"
2896         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2897     )
2898 }
2899
2900 map 'disable_components $v' $LIBRARY_LIST
2901
2902 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2903 set >> $logfile
2904
2905 case "$toolchain" in
2906     *-asan)
2907         cc_default="${toolchain%-asan}"
2908         add_cflags  -fsanitize=address
2909         add_ldflags -fsanitize=address
2910     ;;
2911     *-msan)
2912         cc_default="${toolchain%-msan}"
2913         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2914         add_ldflags -fsanitize=memory
2915     ;;
2916     *-tsan)
2917         cc_default="${toolchain%-tsan}"
2918         add_cflags  -fsanitize=thread -fPIE
2919         add_ldflags -fsanitize=thread -pie
2920         case "$toolchain" in
2921             gcc-tsan)
2922                 add_cflags  -fPIC
2923                 add_ldflags -fPIC
2924                 ;;
2925         esac
2926     ;;
2927     *-usan)
2928         cc_default="${toolchain%-usan}"
2929         add_cflags  -fsanitize=undefined
2930         add_ldflags -fsanitize=undefined
2931         case "$toolchain" in
2932             clang-usan)
2933                 add_cflags -O1
2934                 ;;
2935         esac
2936     ;;
2937     valgrind-*)
2938         target_exec_default="valgrind"
2939         case "$toolchain" in
2940             valgrind-massif)
2941                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2942                 ;;
2943             valgrind-memcheck)
2944                 target_exec_args="--track-origins=yes --leak-check=full"
2945                 ;;
2946         esac
2947     ;;
2948     msvc)
2949         # Check whether the current MSVC version needs the C99 converter.
2950         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2951         # support enough of C99 to build libav. Default to the new
2952         # behaviour if the regexp was unable to match anything, since this
2953         # successfully parses the version number of existing supported
2954         # versions that require the converter (MSVC 2010 and 2012).
2955         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2956         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2957             cc_default="cl"
2958         else
2959             cc_default="c99wrap cl"
2960         fi
2961         ld_default="$source_path/compat/windows/mslink"
2962         nm_default="dumpbin -symbols"
2963         ar_default="lib"
2964         case "$arch" in
2965         arm*)
2966             as_default="armasm"
2967             ;;
2968         esac
2969         target_os_default="win32"
2970         # Use a relative path for TMPDIR. This makes sure all the
2971         # ffconf temp files are written with a relative path, avoiding
2972         # issues with msys/win32 path conversion for MSVC parameters
2973         # such as -Fo<file> or -out:<file>.
2974         TMPDIR=.
2975     ;;
2976     icl)
2977         cc_default="icl"
2978         ld_default="xilink"
2979         nm_default="dumpbin -symbols"
2980         ar_default="xilib"
2981         target_os_default="win32"
2982         TMPDIR=.
2983     ;;
2984     gcov)
2985         add_cflags  -fprofile-arcs -ftest-coverage
2986         add_ldflags -fprofile-arcs -ftest-coverage
2987     ;;
2988     llvm-cov)
2989         add_cflags -fprofile-arcs -ftest-coverage
2990         add_ldflags --coverage
2991     ;;
2992     hardened)
2993         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2994         add_cflags   -fno-strict-overflow -fstack-protector-all
2995         add_ldflags  -Wl,-z,relro -Wl,-z,now
2996     ;;
2997     ?*)
2998         die "Unknown toolchain $toolchain"
2999     ;;
3000 esac
3001
3002 test -n "$cross_prefix" && enable cross_compile
3003
3004 if enabled cross_compile; then
3005     test -n "$arch" && test -n "$target_os" ||
3006         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3007 fi
3008
3009 ar_default="${cross_prefix}${ar_default}"
3010 cc_default="${cross_prefix}${cc_default}"
3011 objcc_default="${cross_prefix}${objcc_default}"
3012 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3013 nm_default="${cross_prefix}${nm_default}"
3014 pkg_config_default="${cross_prefix}${pkg_config_default}"
3015 ranlib="${cross_prefix}${ranlib}"
3016 strip="${cross_prefix}${strip}"
3017
3018 sysinclude_default="${sysroot}/usr/include"
3019
3020 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3021 enabled cross_compile || host_cc_default=$cc
3022 set_default host_cc
3023
3024 if ! $pkg_config --version >/dev/null 2>&1; then
3025     warn "$pkg_config not found, library detection may fail."
3026     pkg_config=false
3027 fi
3028
3029 exesuf() {
3030     case $1 in
3031         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3032     esac
3033 }
3034
3035 EXESUF=$(exesuf $target_os)
3036 HOSTEXESUF=$(exesuf $host_os)
3037
3038 # set temporary file name
3039 : ${TMPDIR:=$TEMPDIR}
3040 : ${TMPDIR:=$TMP}
3041 : ${TMPDIR:=/tmp}
3042
3043 if ! check_cmd mktemp -u XXXXXX; then
3044     # simple replacement for missing mktemp
3045     # NOT SAFE FOR GENERAL USE
3046     mktemp(){
3047         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3048         echo "$tmpname"
3049         mkdir "$tmpname"
3050     }
3051 fi
3052
3053 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3054     die "Unable to create temporary directory in $TMPDIR."
3055
3056 tmpfile(){
3057     tmp="${AVTMPDIR}/test"$2
3058     (set -C; exec > $tmp) 2> /dev/null ||
3059         die "Unable to create temporary file in $AVTMPDIR."
3060     eval $1=$tmp
3061 }
3062
3063 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3064 trap 'exit 2' INT
3065
3066 tmpfile TMPASM .asm
3067 tmpfile TMPC   .c
3068 tmpfile TMPE   $EXESUF
3069 tmpfile TMPH   .h
3070 tmpfile TMPO   .o
3071 tmpfile TMPS   .S
3072 tmpfile TMPSH  .sh
3073 tmpfile TMPV   .ver
3074
3075 unset -f mktemp
3076
3077 chmod +x $TMPE
3078
3079 # make sure we can execute files in $TMPDIR
3080 cat > $TMPSH 2>> $logfile <<EOF
3081 #! /bin/sh
3082 EOF
3083 chmod +x $TMPSH >> $logfile 2>&1
3084 if ! $TMPSH >> $logfile 2>&1; then
3085     cat <<EOF
3086 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3087 variable to another directory and make sure that it is not mounted noexec.
3088 EOF
3089     die "Sanity test failed."
3090 fi
3091
3092 armasm_flags(){
3093     for flag; do
3094         case $flag in
3095             # Filter out MSVC cl.exe options from cflags that shouldn't
3096             # be passed to gas-preprocessor
3097             -M[TD]*)                                            ;;
3098             *)                  echo $flag                      ;;
3099         esac
3100    done
3101 }
3102
3103 ccc_flags(){
3104     for flag; do
3105         case $flag in
3106             -std=c99)           echo -c99                       ;;
3107             -mcpu=*)            echo -arch ${flag#*=}           ;;
3108             -mieee)             echo -ieee                      ;;
3109             -O*|-fast)          echo $flag                      ;;
3110             -fno-math-errno)    echo -assume nomath_errno       ;;
3111             -g)                 echo -g3                        ;;
3112             -Wall)              echo -msg_enable level2         ;;
3113             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3114             -Wl,*)              echo $flag                      ;;
3115             -f*|-W*)                                            ;;
3116             *)                  echo $flag                      ;;
3117         esac
3118    done
3119 }
3120
3121 cparser_flags(){
3122     for flag; do
3123         case $flag in
3124             -Wno-switch)             echo -Wno-switch-enum ;;
3125             -Wno-format-zero-length) ;;
3126             -Wdisabled-optimization) ;;
3127             -Wno-pointer-sign)       echo -Wno-other ;;
3128             *)                       echo $flag ;;
3129         esac
3130     done
3131 }
3132
3133 msvc_common_flags(){
3134     for flag; do
3135         case $flag in
3136             # In addition to specifying certain flags under the compiler
3137             # specific filters, they must be specified here as well or else the
3138             # generic catch all at the bottom will print the original flag.
3139             -Wall)                ;;
3140             -Wextra)              ;;
3141             -std=c99)             ;;
3142             # Common flags
3143             -fomit-frame-pointer) ;;
3144             -g)                   echo -Z7 ;;
3145             -fno-math-errno)      ;;
3146             -fno-common)          ;;
3147             -fno-signed-zeros)    ;;
3148             -fPIC)                ;;
3149             -mthumb)              ;;
3150             -march=*)             ;;
3151             -lz)                  echo zlib.lib ;;
3152             -lx264)               echo libx264.lib ;;
3153             -l*)                  echo ${flag#-l}.lib ;;
3154             -L*)                  echo -libpath:${flag#-L} ;;
3155             *)                    echo $flag ;;
3156         esac
3157     done
3158 }
3159
3160 msvc_flags(){
3161     msvc_common_flags "$@"
3162     for flag; do
3163         case $flag in
3164             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3165                                        -wd4554 ;;
3166             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3167                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3168                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3169                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3170         esac
3171     done
3172 }
3173
3174 icl_flags(){
3175     msvc_common_flags "$@"
3176     for flag; do
3177         case $flag in
3178             # Despite what Intel's documentation says -Wall, which is supported
3179             # on Windows, does enable remarks so disable them here.
3180             -Wall)                echo $flag -Qdiag-disable:remark ;;
3181             -std=c99)             echo -Qstd=c99 ;;
3182         esac
3183     done
3184 }
3185
3186 pgi_flags(){
3187     for flag; do
3188         case $flag in
3189             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3190             -fomit-frame-pointer) echo -Mnoframe ;;
3191             -g)                   echo -gopt ;;
3192             *)                    echo $flag ;;
3193         esac
3194     done
3195 }
3196
3197 suncc_flags(){
3198     for flag; do
3199         case $flag in
3200             -march=*|-mcpu=*)
3201                 case "${flag#*=}" in
3202                     native)                   echo -xtarget=native       ;;
3203                     v9|niagara)               echo -xarch=sparc          ;;
3204                     ultrasparc)               echo -xarch=sparcvis       ;;
3205                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3206                     i586|pentium)             echo -xchip=pentium        ;;
3207                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3208                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3209                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3210                     pentium4*)          echo -xtarget=pentium4           ;;
3211                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3212                     *-sse3)             echo -xarch=sse3                 ;;
3213                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3214                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3215                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3216                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3217                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3218                     k8|opteron|athlon64|athlon-fx)
3219                                                echo -xarch=sse2a         ;;
3220                     athlon*)                   echo -xarch=pentium_proa  ;;
3221                 esac
3222                 ;;
3223             -std=c99)             echo -xc99              ;;
3224             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3225             -fPIC)                echo -KPIC -xcode=pic32 ;;
3226             -W*,*)                echo $flag              ;;
3227             -f*-*|-W*|-mimpure-text)                      ;;
3228             -shared)              echo -G                 ;;
3229             *)                    echo $flag              ;;
3230         esac
3231     done
3232 }
3233
3234 tms470_flags(){
3235     for flag; do
3236         case $flag in
3237             -march=*|-mcpu=*)
3238                 case "${flag#*=}" in
3239                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3240                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3241                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3242                     armv6*|arm11*)          echo -mv=6   ;;
3243                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3244                                             echo -mv=5e  ;;
3245                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3246                 esac
3247                 ;;
3248             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3249             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3250             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3251             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3252             -msoft-float)   echo --float_support=vfplib       ;;
3253             -O[0-3]|-mf=*)  echo $flag                        ;;
3254             -g)             echo -g -mn                       ;;
3255             -pds=*)         echo $flag                        ;;
3256             -D*|-I*)        echo $flag                        ;;
3257             --gcc|--abi=*)  echo $flag                        ;;
3258             -me)            echo $flag                        ;;
3259         esac
3260     done
3261 }
3262
3263 probe_cc(){
3264     pfx=$1
3265     _cc=$2
3266
3267     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3268     unset _ld_o _ldflags _ld_lib _ld_path
3269     unset _depflags _DEPCMD _DEPFLAGS
3270     _flags_filter=echo
3271
3272     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3273         _type=llvm_gcc
3274         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3275         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3276         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3277         _cflags_speed='-O3'
3278         _cflags_size='-Os'
3279     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3280         _type=gcc
3281         gcc_version=$($_cc --version | head -n1)
3282         gcc_basever=$($_cc -dumpversion)
3283         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3284         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3285         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3286         if ! $_cc -dumpversion | grep -q '^2\.'; then
3287             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3288         fi
3289         _cflags_speed='-O3'
3290         _cflags_size='-Os'
3291     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3292         _type=icc
3293         _ident=$($_cc --version | head -n1)
3294         _depflags='-MMD'
3295         _cflags_speed='-O3'
3296         _cflags_size='-Os'
3297         _cflags_noopt='-O1'
3298     elif $_cc -v 2>&1 | grep -q xlc; then
3299         _type=xlc
3300         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3301         _cflags_speed='-O5'
3302         _cflags_size='-O5 -qcompact'
3303     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3304         _type=ccc
3305         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3306         _DEPFLAGS='-M'
3307         _cflags_speed='-fast'
3308         _cflags_size='-O1'
3309         _flags_filter=ccc_flags
3310     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3311         test -d "$sysroot" || die "No valid sysroot specified."
3312         _type=armcc
3313         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3314         armcc_conf="$PWD/armcc.conf"
3315         $_cc --arm_linux_configure                 \
3316              --arm_linux_config_file="$armcc_conf" \
3317              --configure_sysroot="$sysroot"        \
3318              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3319              die "Error creating armcc configuration file."
3320         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3321         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3322         as_default="${cross_prefix}gcc"
3323         _depflags='-MMD'
3324         _cflags_speed='-O3'
3325         _cflags_size='-Os'
3326     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3327         _type=tms470
3328         _ident=$($_cc -version | head -n1 | tr -s ' ')
3329         _flags='--gcc --abi=eabi -me'
3330         _cc_e='-ppl -fe=$@'
3331         _cc_o='-fe=$@'
3332         _depflags='-ppa -ppd=$(@:.o=.d)'
3333         _cflags_speed='-O3 -mf=5'
3334         _cflags_size='-O3 -mf=2'
3335         _flags_filter=tms470_flags
3336     elif $_cc -v 2>&1 | grep -q clang; then
3337         _type=clang
3338         _ident=$($_cc --version 2>/dev/null | head -n1)
3339         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3340         _cflags_speed='-O3'
3341         _cflags_size='-Os'
3342     elif $_cc -V 2>&1 | grep -q Sun; then
3343         _type=suncc
3344         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3345         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3346         _DEPFLAGS='-xM1 -xc99'
3347         _ldflags='-std=c99'
3348         _cflags_speed='-O5'
3349         _cflags_size='-O5 -xspace'
3350         _flags_filter=suncc_flags
3351     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3352         _type=pathscale
3353         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3354         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3355         _cflags_speed='-O2'
3356         _cflags_size='-Os'
3357         _flags_filter='filter_out -Wdisabled-optimization'
3358     elif $_cc -v 2>&1 | grep -q Open64; then
3359         _type=open64
3360         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3361         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3362         _cflags_speed='-O2'
3363         _cflags_size='-Os'
3364         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3365     elif $_cc -V 2>&1 | grep -q Portland; then
3366         _type=pgi
3367         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3368         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3369         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3370         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3371         _cflags_noopt="-O1"
3372         _flags_filter=pgi_flags
3373     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3374         _type=armasm
3375         _ident=$($_cc | head -n1)
3376         # 4509: "This form of conditional instruction is deprecated"
3377         _flags="-nologo -ignore 4509"
3378         _flags_filter=armasm_flags
3379     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3380         _type=msvc
3381         _ident=$($_cc 2>&1 | head -n1)
3382         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3383         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3384         _cflags_speed="-O2"
3385         _cflags_size="-O1"
3386         _cflags_noopt="-O1"
3387         if $_cc -nologo- 2>&1 | grep -q Linker; then
3388             _ld_o='-out:$@'
3389         else
3390             _ld_o='-Fe$@'
3391         fi
3392         _cc_o='-Fo$@'
3393         _cc_e='-P -Fi$@'
3394         _flags_filter=msvc_flags
3395         _ld_lib='lib%.a'
3396         _ld_path='-libpath:'
3397         _flags='-nologo'
3398     elif $_cc 2>&1 | grep -q Intel; then
3399         _type=icl
3400         _ident=$($_cc 2>&1 | head -n1)
3401         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3402         # Not only is O3 broken on 13.x+ but it is slower on all previous
3403         # versions (tested) as well.
3404         _cflags_speed="-O2"
3405         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3406         if $_cc 2>&1 | grep -q Linker; then
3407             _ld_o='-out:$@'
3408         else
3409             _ld_o='-Fe$@'
3410         fi
3411         _cc_o='-Fo$@'
3412         _cc_e='-P'
3413         _flags_filter=icl_flags
3414         _ld_lib='lib%.a'
3415         _ld_path='-libpath:'
3416         # -Qdiag-error to make icl error when seeing certain unknown arguments
3417         _flags='-nologo -Qdiag-error:4044,10157'
3418         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3419         # with MSVC which enables it by default.
3420         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3421     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3422         # lld can emulate multiple different linkers; in ms link.exe mode,
3423         # the -? parameter gives the help output which contains an identifyable
3424         # string, while it gives an error in other modes.
3425         _type=lld-link
3426         # The link.exe mode doesn't have a switch for getting the version,
3427         # but we can force it back to gnu mode and get the version from there.
3428         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3429         _ld_o='-out:$@'
3430         _flags_filter=msvc_flags
3431         _ld_lib='lib%.a'
3432         _ld_path='-libpath:'
3433     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3434         _type=cparser
3435         _ident=$($_cc --version | head -n1)
3436         _depflags='-MMD'
3437         _cflags_speed='-O4'
3438         _cflags_size='-O2'
3439         _flags_filter=cparser_flags
3440     fi
3441
3442     eval ${pfx}_type=\$_type
3443     eval ${pfx}_ident=\$_ident
3444 }
3445
3446 set_ccvars(){
3447     eval ${1}_C=\${_cc_c-\${${1}_C}}
3448     eval ${1}_E=\${_cc_e-\${${1}_E}}
3449     eval ${1}_O=\${_cc_o-\${${1}_O}}
3450
3451     if [ -n "$_depflags" ]; then
3452         eval ${1}_DEPFLAGS=\$_depflags
3453     else
3454         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3455         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3456         eval DEP${1}FLAGS=\$_flags
3457     fi
3458 }
3459
3460 probe_cc cc "$cc"
3461 cflags_filter=$_flags_filter
3462 cflags_speed=$_cflags_speed
3463 cflags_size=$_cflags_size
3464 cflags_noopt=$_cflags_noopt
3465 add_cflags $_flags $_cflags
3466 cc_ldflags=$_ldflags
3467 set_ccvars CC
3468
3469 probe_cc hostcc "$host_cc"
3470 host_cflags_filter=$_flags_filter
3471 host_cflags_speed=$_cflags_speed
3472 add_host_cflags  $_flags $_cflags
3473 set_ccvars HOSTCC
3474
3475 test -n "$cc_type" && enable $cc_type ||
3476     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3477
3478 : ${as_default:=$cc}
3479 : ${objcc_default:=$cc}
3480 : ${dep_cc_default:=$cc}
3481 : ${ld_default:=$cc}
3482 : ${host_ld_default:=$host_cc}
3483 set_default ar as objcc dep_cc ld host_ld
3484
3485 probe_cc as "$as"
3486 asflags_filter=$_flags_filter
3487 add_asflags $_flags $_cflags
3488 set_ccvars AS
3489
3490 probe_cc objcc "$objcc"
3491 objcflags_filter=$_flags_filter
3492 add_objcflags $_flags $_cflags
3493 set_ccvars OBJC
3494
3495 probe_cc ld "$ld"
3496 ldflags_filter=$_flags_filter
3497 add_ldflags $_flags $_ldflags
3498 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3499 LD_O=${_ld_o-$LD_O}
3500 LD_LIB=${_ld_lib-$LD_LIB}
3501 LD_PATH=${_ld_path-$LD_PATH}
3502
3503 probe_cc hostld "$host_ld"
3504 host_ldflags_filter=$_flags_filter
3505 add_host_ldflags $_flags $_ldflags
3506 HOSTLD_O=${_ld_o-$HOSTLD_O}
3507
3508 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3509     probe_cc depcc "$dep_cc"
3510     CCDEP=${_DEPCMD:-$DEPCMD}
3511     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3512     DEPCCFLAGS=$_flags
3513 fi
3514
3515 if $ar 2>&1 | grep -q Microsoft; then
3516     arflags="-nologo"
3517     ar_o='-out:$@'
3518 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3519     arflags="rq"
3520     ar_o='$@'
3521 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3522     arflags='-Xany -r -c'
3523     ar_o='$@'
3524 else
3525     arflags="rc"
3526     ar_o='$@'
3527 fi
3528
3529 add_cflags $extra_cflags
3530 add_objcflags $extra_objcflags
3531 add_asflags $extra_cflags
3532
3533 if test -n "$sysroot"; then
3534     case "$cc_type" in
3535         gcc|llvm_gcc|clang)
3536             add_cppflags --sysroot="$sysroot"
3537             add_ldflags --sysroot="$sysroot"
3538         ;;
3539         tms470)
3540             add_cppflags -I"$sysinclude"
3541             add_ldflags  --sysroot="$sysroot"
3542         ;;
3543     esac
3544 fi
3545
3546 if test "$cpu" = host; then
3547     enabled cross_compile &&
3548         die "--cpu=host makes no sense when cross-compiling."
3549
3550     case "$cc_type" in
3551         gcc|llvm_gcc)
3552             check_native(){
3553                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3554                 sed -n "/cc1.*$1=/{
3555                             s/.*$1=\\([^ ]*\\).*/\\1/
3556                             p
3557                             q
3558                         }" $TMPE
3559             }
3560             cpu=$(check_native -march || check_native -mcpu)
3561         ;;
3562     esac
3563
3564     test "${cpu:-host}" = host &&
3565         die "--cpu=host not supported with compiler $cc"
3566 fi
3567
3568 # Deal with common $arch aliases
3569 case "$arch" in
3570     aarch64|arm64)
3571         arch="aarch64"
3572     ;;
3573     arm*)
3574         arch="arm"
3575     ;;
3576     mips*|IP*)
3577         case "$arch" in
3578         *el)
3579             add_cppflags -EL
3580             add_ldflags -EL
3581         ;;
3582         *eb)
3583             add_cppflags -EB
3584             add_ldflags -EB
3585         ;;
3586         esac
3587         arch="mips"
3588     ;;
3589     parisc*|hppa*)
3590         arch="parisc"
3591     ;;
3592     "Power Macintosh"|ppc*|powerpc*)
3593         arch="ppc"
3594     ;;
3595     s390|s390x)
3596         arch="s390"
3597     ;;
3598     sh4|sh)
3599         arch="sh4"
3600     ;;
3601     sun4u|sparc*)
3602         arch="sparc"
3603     ;;
3604     tilegx|tile-gx)
3605         arch="tilegx"
3606     ;;
3607     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3608         arch="x86"
3609     ;;
3610 esac
3611
3612 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3613 enable $arch
3614
3615 # Add processor-specific flags
3616 if enabled aarch64; then
3617
3618     case $cpu in
3619         armv*)
3620             cpuflags="-march=$cpu"
3621         ;;
3622         *)
3623             cpuflags="-mcpu=$cpu"
3624         ;;
3625     esac
3626
3627 elif enabled alpha; then
3628
3629     cpuflags="-mcpu=$cpu"
3630
3631 elif enabled arm; then
3632
3633     check_arm_arch() {
3634         check_cpp_condition stddef.h \
3635             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3636             $cpuflags
3637     }
3638
3639     probe_arm_arch() {
3640         if   check_arm_arch 4;        then echo armv4
3641         elif check_arm_arch 4T;       then echo armv4t
3642         elif check_arm_arch 5;        then echo armv5
3643         elif check_arm_arch 5E;       then echo armv5e
3644         elif check_arm_arch 5T;       then echo armv5t
3645         elif check_arm_arch 5TE;      then echo armv5te
3646         elif check_arm_arch 5TEJ;     then echo armv5te
3647         elif check_arm_arch 6;        then echo armv6
3648         elif check_arm_arch 6J;       then echo armv6j
3649         elif check_arm_arch 6K;       then echo armv6k
3650         elif check_arm_arch 6Z;       then echo armv6z
3651         elif check_arm_arch 6ZK;      then echo armv6zk
3652         elif check_arm_arch 6T2;      then echo armv6t2
3653         elif check_arm_arch 7;        then echo armv7
3654         elif check_arm_arch 7A  7_A;  then echo armv7-a
3655         elif check_arm_arch 7S;       then echo armv7-a
3656         elif check_arm_arch 7R  7_R;  then echo armv7-r
3657         elif check_arm_arch 7M  7_M;  then echo armv7-m
3658         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3659         elif check_arm_arch 8A  8_A;  then echo armv8-a
3660         fi
3661     }
3662
3663     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3664
3665     case $cpu in
3666         armv*)
3667             cpuflags="-march=$cpu"
3668             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3669         ;;
3670         *)
3671             cpuflags="-mcpu=$cpu"
3672             case $cpu in
3673                 cortex-a*)                               subarch=armv7a  ;;
3674                 cortex-r*)                               subarch=armv7r  ;;
3675                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3676                 arm11*)                                  subarch=armv6   ;;
3677                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3678                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3679                 *)                             subarch=$(probe_arm_arch) ;;
3680             esac
3681         ;;
3682     esac
3683
3684     case "$subarch" in
3685         armv5t*)    enable fast_clz                ;;
3686         armv[6-8]*) enable fast_clz fast_unaligned ;;
3687     esac
3688
3689 elif enabled avr32; then
3690
3691     case $cpu in
3692         ap7[02]0[0-2])
3693             subarch="avr32_ap"
3694             cpuflags="-mpart=$cpu"
3695         ;;
3696         ap)
3697             subarch="avr32_ap"
3698             cpuflags="-march=$cpu"
3699         ;;
3700         uc3[ab]*)
3701             subarch="avr32_uc"
3702             cpuflags="-mcpu=$cpu"
3703         ;;
3704         uc)
3705             subarch="avr32_uc"
3706             cpuflags="-march=$cpu"
3707         ;;
3708     esac
3709
3710 elif enabled bfin; then
3711
3712     cpuflags="-mcpu=$cpu"
3713
3714 elif enabled mips; then
3715
3716     cpuflags="-march=$cpu"
3717
3718 elif enabled ppc; then
3719
3720     disable ldbrx
3721
3722     case $(tolower $cpu) in
3723         601|ppc601|powerpc601)
3724             cpuflags="-mcpu=601"
3725             disable altivec
3726         ;;
3727         603*|ppc603*|powerpc603*)
3728             cpuflags="-mcpu=603"
3729             disable altivec
3730         ;;
3731         604*|ppc604*|powerpc604*)
3732             cpuflags="-mcpu=604"
3733             disable altivec
3734         ;;
3735         g3|75*|ppc75*|powerpc75*)
3736             cpuflags="-mcpu=750"
3737             disable altivec
3738         ;;
3739         g4|745*|ppc745*|powerpc745*)
3740             cpuflags="-mcpu=7450"
3741             disable vsx
3742         ;;
3743         74*|ppc74*|powerpc74*)
3744             cpuflags="-mcpu=7400"
3745             disable vsx
3746         ;;
3747         g5|970|ppc970|powerpc970)
3748             cpuflags="-mcpu=970"
3749             disable vsx
3750         ;;
3751         power[3-6]*)
3752             cpuflags="-mcpu=$cpu"
3753             disable vsx
3754         ;;
3755         power[7-8]*)
3756             cpuflags="-mcpu=$cpu"
3757             enable ldbrx
3758         ;;
3759         cell)
3760             cpuflags="-mcpu=cell"
3761             enable ldbrx
3762             disable vsx
3763         ;;
3764         e500mc)
3765             cpuflags="-mcpu=e500mc"
3766             disable altivec
3767         ;;
3768         e500v2)
3769             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3770             disable altivec
3771             disable dcbzl
3772         ;;
3773         e500)
3774             cpuflags="-mcpu=8540 -mhard-float"
3775             disable altivec
3776             disable dcbzl
3777         ;;
3778     esac
3779
3780 elif enabled sparc; then
3781
3782     case $cpu in
3783         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3784             cpuflags="-mcpu=$cpu"
3785         ;;
3786         ultrasparc*|niagara[234])
3787             cpuflags="-mcpu=$cpu"
3788         ;;
3789     esac
3790
3791 elif enabled x86; then
3792
3793     case $cpu in
3794         i[345]86|pentium)
3795             cpuflags="-march=$cpu"
3796             disable i686
3797             disable mmx
3798         ;;
3799         # targets that do NOT support nopl and conditional mov (cmov)
3800         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3801             cpuflags="-march=$cpu"
3802             disable i686
3803         ;;
3804         # targets that do support nopl and conditional mov (cmov)
3805         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3806             cpuflags="-march=$cpu"
3807             enable i686
3808             enable fast_cmov
3809         ;;
3810         # targets that do support conditional mov but on which it's slow
3811         pentium4|pentium4m|prescott|nocona)
3812             cpuflags="-march=$cpu"
3813             enable i686
3814             disable fast_cmov
3815         ;;
3816     esac
3817
3818 fi
3819
3820 if [ "$cpu" != generic ]; then
3821     add_cflags  $cpuflags
3822     add_asflags $cpuflags
3823     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3824 fi
3825
3826 # compiler sanity check
3827 check_exec <<EOF
3828 int main(void){ return 0; }
3829 EOF
3830 if test "$?" != 0; then
3831     echo "$cc is unable to create an executable file."
3832     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3833         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3834         echo "Only do this if you know what cross compiling means."
3835     fi
3836     die "C compiler test failed."
3837 fi
3838
3839 add_cppflags -D_ISOC99_SOURCE
3840
3841 # some compilers silently accept -std=c11, so we also need to check that the
3842 # version macro is defined properly
3843 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3844     add_cflags -std=c11 ||
3845     check_cflags -std=c99
3846
3847 check_cppflags -D_FILE_OFFSET_BITS=64
3848 check_cppflags -D_LARGEFILE_SOURCE
3849
3850 add_host_cppflags -D_ISOC99_SOURCE
3851 check_host_cflags -std=c99
3852 check_host_cflags -Wall
3853 check_host_cflags $host_cflags_speed
3854
3855 check_64bit(){
3856     arch32=$1
3857     arch64=$2
3858     expr=$3
3859     check_code cc "" "int test[2*($expr) - 1]" &&
3860         subarch=$arch64 || subarch=$arch32
3861 }
3862
3863 case "$arch" in
3864     aarch64|alpha|ia64)
3865         spic=$shared
3866     ;;
3867     mips)
3868         check_64bit mips mips64 '_MIPS_SIM > 1'
3869         spic=$shared
3870     ;;
3871     parisc)
3872         check_64bit parisc parisc64 'sizeof(void *) > 4'
3873         spic=$shared
3874     ;;
3875     ppc)
3876         check_64bit ppc ppc64 'sizeof(void *) > 4'
3877         spic=$shared
3878     ;;
3879     s390)
3880         check_64bit s390 s390x 'sizeof(void *) > 4'
3881         spic=$shared
3882     ;;
3883     sparc)
3884         check_64bit sparc sparc64 'sizeof(void *) > 4'
3885         spic=$shared
3886     ;;
3887     x86)
3888         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3889         if test "$subarch" = "x86_64"; then
3890             spic=$shared
3891         fi
3892     ;;
3893 esac
3894
3895 enable $subarch
3896 enabled spic && enable_weak pic
3897
3898 enabled x86_64 && objformat=elf64 || objformat="elf32"
3899
3900 # OS specific
3901 case $target_os in
3902     aix)
3903         SHFLAGS=-shared
3904         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3905         enabled shared && add_ldflags -Wl,-brtl
3906         ;;
3907     android)
3908         disable symver
3909         enable section_data_rel_ro
3910         SLIB_INSTALL_NAME='$(SLIBNAME)'
3911         SLIB_INSTALL_LINKS=
3912         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3913         ;;
3914     haiku)
3915         prefix_default="/boot/common"
3916         network_extralibs="-lnetwork"
3917         host_extralibs=
3918         ;;
3919     sunos)
3920         SHFLAGS='-shared -Wl,-h,$$(@F)'
3921         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3922         network_extralibs="-lsocket -lnsl"
3923         # When using suncc to build, the Solaris linker will mark
3924         # an executable with each instruction set encountered by
3925         # the Solaris assembler.  As our libraries contain their own
3926         # guards for processor-specific code, instead suppress
3927         # generation of the HWCAPS ELF section on Solaris x86 only.
3928         enabled_all suncc x86 &&
3929             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3930             add_ldflags -Wl,-M,mapfile
3931         nm_default='nm -P -g'
3932         version_script='-M'
3933         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3934         ;;
3935     netbsd)
3936         disable symver
3937         oss_indev_extralibs="-lossaudio"
3938         oss_outdev_extralibs="-lossaudio"
3939         ;;
3940     openbsd|bitrig)
3941         disable symver
3942         SHFLAGS='-shared'
3943         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3944         SLIB_INSTALL_LINKS=
3945         oss_indev_extralibs="-lossaudio"
3946         oss_outdev_extralibs="-lossaudio"
3947         ;;
3948     dragonfly)
3949         disable symver
3950         ;;
3951     freebsd)
3952         ;;
3953     bsd/os)
3954         add_extralibs -lpoll -lgnugetopt
3955         ;;
3956     darwin)
3957         enabled ppc && add_asflags -force_cpusubtype_ALL
3958         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3959         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3960         add_ldflags -Wl,-dynamic,-search_paths_first
3961         check_cflags -Werror=partial-availability
3962         SLIBSUF=".dylib"
3963         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3964         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3965         enabled x86_64 && objformat="macho64" || objformat="macho32"
3966         enabled_any pic shared ||
3967             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3968         check_header dispatch/dispatch.h &&
3969             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3970         ;;
3971     msys*)
3972         die "Native MSYS builds are discouraged, please use the MINGW environment."
3973         ;;
3974     mingw32*|mingw64*)
3975         if test $target_os = "mingw32ce"; then
3976             disable network
3977         else
3978             target_os=mingw32
3979         fi
3980         LIBTARGET=i386
3981         if enabled x86_64; then
3982             LIBTARGET="i386:x86-64"
3983         elif enabled arm; then
3984             LIBTARGET=arm-wince
3985         fi
3986         check_ldflags -Wl,--nxcompat
3987         check_ldflags -Wl,--dynamicbase
3988         shlibdir_default="$bindir_default"
3989         SLIBPREF=""
3990         SLIBSUF=".dll"
3991         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3992         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3993         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3994         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3995         SLIB_INSTALL_LINKS=
3996         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3997         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3998         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3999         enabled x86_64 && objformat="win64" || objformat="win32"
4000         dlltool="${cross_prefix}dlltool"
4001         ranlib=:
4002         enable dos_paths
4003         ;;
4004     win32|win64)
4005         disable symver
4006         if enabled shared; then
4007             # Link to the import library instead of the normal static library
4008             # for shared libs.
4009             LD_LIB='%.lib'
4010             # Cannot build both shared and static libs with MSVC or icl.
4011             disable static
4012         fi
4013         shlibdir_default="$bindir_default"
4014         SLIBPREF=""
4015         SLIBSUF=".dll"
4016         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4017         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4018         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4019         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4020         SLIB_INSTALL_LINKS=
4021         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4022         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4023         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4024         enabled x86_64 && objformat="win64" || objformat="win32"
4025         ranlib=:
4026         enable dos_paths
4027         ;;
4028     cygwin*)
4029         target_os=cygwin
4030         shlibdir_default="$bindir_default"
4031         SLIBPREF="cyg"
4032         SLIBSUF=".dll"
4033         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4034         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4035         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4036         SLIB_INSTALL_LINKS=
4037         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4038         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4039         enabled x86_64 && objformat="win64" || objformat="win32"
4040         enable dos_paths
4041         ;;
4042     *-dos|freedos|opendos)
4043         network_extralibs="-lsocket"
4044         objformat="coff"
4045         enable dos_paths
4046         add_cppflags -U__STRICT_ANSI__
4047         ;;
4048     linux)
4049         enable dv1394
4050         enable section_data_rel_ro
4051         ;;
4052     irix*)
4053         target_os=irix
4054         ranlib="echo ignoring ranlib"
4055         ;;
4056     os/2*)
4057         ln_s="cp -f"
4058         objformat="aout"
4059         add_cppflags -D_GNU_SOURCE
4060         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4061         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4062         LIBSUF="_s.a"
4063         SLIBPREF=""
4064         SLIBSUF=".dll"
4065         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4066         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4067         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4068             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4069             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4070             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4071             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4072         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4073             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4074         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4075         enable dos_paths
4076         ;;
4077     gnu/kfreebsd)
4078         add_cppflags -D_BSD_SOURCE
4079         ;;
4080     gnu)
4081         ;;
4082     qnx)
4083         add_cppflags -D_QNX_SOURCE
4084         network_extralibs="-lsocket"
4085         ;;
4086     symbian)
4087         SLIBSUF=".dll"
4088         enable dos_paths
4089         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4090         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4091         add_ldflags -Wl,--target1-abs,--no-undefined \
4092                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4093                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4094         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4095                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4096                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4097         ;;
4098     osf1)
4099         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4100         ;;
4101     minix)
4102         ;;
4103     none)
4104         ;;
4105     *)
4106         die "Unknown OS '$target_os'."
4107         ;;
4108 esac
4109
4110 # determine libc flavour
4111
4112 probe_libc(){
4113     pfx=$1
4114     pfx_no_=${pfx%_}
4115     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4116     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4117         eval ${pfx}libc_type=uclibc
4118         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4119     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4120         eval ${pfx}libc_type=glibc
4121         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4122     # MinGW headers can be installed on Cygwin, so check for newlib first.
4123     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4124         eval ${pfx}libc_type=newlib
4125         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4126     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4127     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4128         eval ${pfx}libc_type=mingw64
4129         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4130         eval test \$${pfx_no_}cc_type = "gcc" &&
4131             add_${pfx}cppflags -D__printf__=__gnu_printf__
4132     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4133          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4134         eval ${pfx}libc_type=mingw32
4135         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4136             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4137             die "ERROR: MinGW32 runtime version must be >= 3.15."
4138         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4139         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4140             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4141         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4142             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4143         eval test \$${pfx_no_}cc_type = "gcc" &&
4144             add_${pfx}cppflags -D__printf__=__gnu_printf__
4145     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4146         eval ${pfx}libc_type=msvcrt
4147         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4148             if [ "$pfx" = host_ ]; then
4149                 add_host_cppflags -Dsnprintf=_snprintf
4150             else
4151                 add_compat strtod.o strtod=avpriv_strtod
4152                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4153                                              _snprintf=avpriv_snprintf  \
4154                                              vsnprintf=avpriv_vsnprintf
4155             fi
4156         fi
4157         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4158         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4159         # 0x601 by default unless something else is set by the user.
4160         # This can easily lead to us detecting functions only present
4161         # in such new versions and producing binaries requiring windows 7.0.
4162         # Therefore explicitly set the default to XP unless the user has
4163         # set something else on the command line.
4164         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4165         # family. For these cases, configure is free to use any functions
4166         # found in the SDK headers by default. (Alternatively, we could force
4167         # _WIN32_WINNT to 0x0602 in that case.)
4168         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4169             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4170 #ifdef WINAPI_FAMILY
4171 #include <winapifamily.h>
4172 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4173 #error not desktop
4174 #endif
4175 #endif
4176 EOF
4177         if [ "$pfx" = "" ]; then
4178             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4179         fi
4180     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4181         eval ${pfx}libc_type=klibc
4182     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4183         eval ${pfx}libc_type=bionic
4184     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4185         eval ${pfx}libc_type=solaris
4186         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4187     else
4188         eval ${pfx}libc_type=default
4189         add_${pfx}cppflags -D_DEFAULT_SOURCE
4190     fi
4191 }
4192
4193 probe_libc
4194 test -n "$libc_type" && enable libc_$libc_type
4195 probe_libc host_
4196 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4197
4198 # hacks for compiler/libc/os combinations
4199
4200 case $libc_type in
4201     bionic)
4202         add_compat strtod.o strtod=avpriv_strtod
4203         ;;
4204     glibc)
4205         if enabled tms470; then
4206             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4207             add_cppflags -D__USER_LABEL_PREFIX__=
4208             add_cppflags -D__builtin_memset=memset
4209             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4210             add_cflags   -pds=48    # incompatible redefinition of macro
4211         elif enabled ccc; then
4212             add_ldflags -Wl,-z,now  # calls to libots crash without this
4213         fi
4214         ;;
4215 esac
4216
4217 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4218     add_cppflags '-I\$(SRC_PATH)/compat/float'
4219
4220 esc(){
4221     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4222 }
4223
4224 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4225
4226 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4227
4228 set_default $PATHS_LIST
4229 set_default nm
4230
4231 # we need to build at least one lib type
4232 if ! enabled_any static shared; then
4233     cat <<EOF
4234 At least one library type must be built.
4235 Specify --enable-static to build the static libraries or --enable-shared to
4236 build the shared libraries as well. To only build the shared libraries specify
4237 --disable-static in addition to --enable-shared.
4238 EOF
4239     exit 1
4240 fi
4241
4242 disabled optimizations || check_cflags -fomit-frame-pointer
4243
4244 enable_weak_pic() {
4245     disabled pic && return
4246     enable pic
4247     add_cppflags -DPIC
4248     case "$target_os" in
4249     mingw*|cygwin*)
4250         ;;
4251     *)
4252         add_cflags -fPIC
4253         ;;
4254     esac
4255     add_asflags  -fPIC
4256 }
4257
4258 enabled pic && enable_weak_pic
4259
4260 check_cc <<EOF || die "Symbol mangling check failed."
4261 int ff_extern;
4262 EOF
4263 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4264 extern_prefix=${sym%%ff_extern*}
4265
4266 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4267
4268 _restrict=
4269 for restrict_keyword in restrict __restrict__ __restrict; do
4270     check_cc <<EOF && _restrict=$restrict_keyword && break
4271 void foo(char * $restrict_keyword p);
4272 EOF
4273 done
4274
4275 check_cc <<EOF && enable pragma_deprecated
4276 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4277 EOF
4278
4279 check_cc <<EOF && enable attribute_packed
4280 struct { int x; } __attribute__((packed)) x;
4281 EOF
4282
4283 check_cc <<EOF && enable attribute_may_alias
4284 union { int x; } __attribute__((may_alias)) x;
4285 EOF
4286
4287 check_cc <<EOF || die "endian test failed"
4288 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4289 EOF
4290 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4291
4292 check_gas() {
4293     log "check_gas using '$as' as AS"
4294     # :vararg is used on aarch64, arm and ppc altivec
4295     check_as <<EOF || return 1
4296 .macro m n, y:vararg=0
4297 \n: .int \y
4298 .endm
4299 m x
4300 EOF
4301     # .altmacro is only used in arm asm
4302     ! enabled arm || check_as <<EOF || return 1
4303 .altmacro
4304 EOF
4305     enable gnu_as
4306     return 0
4307 }
4308
4309 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4310     nogas=:
4311     enabled_any arm aarch64 && nogas=die
4312     enabled_all ppc altivec && nogas=warn
4313     as_noop=-v
4314
4315     case $as_type in
4316         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4317         gcc)  gaspp_as_type=gas ;;
4318         *)    gaspp_as_type=$as_type ;;
4319     esac
4320
4321     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4322
4323     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4324         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4325
4326     if ! check_gas ; then
4327         as=${gas:=$as}
4328         check_gas || \
4329             $nogas "GNU assembler not found, install/update gas-preprocessor"
4330     fi
4331
4332     check_as <<EOF && enable as_func
4333 .func test
4334 .endfunc
4335 EOF
4336 fi
4337
4338 check_inline_asm inline_asm_labels '"1:\n"'
4339
4340 if enabled aarch64; then
4341     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4342     # internal assembler in clang 3.3 does not support this instruction
4343     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4344     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4345
4346     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4347
4348 elif enabled alpha; then
4349
4350     check_cflags -mieee
4351
4352 elif enabled arm; then
4353
4354     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4355     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4356     enabled thumb && check_cflags -mthumb || check_cflags -marm
4357
4358     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4359         enable vfp_args
4360     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4361         enable vfp_args
4362     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4363         case "${cross_prefix:-$cc}" in
4364             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4365             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4366 __asm__ (".eabi_attribute 28, 1");
4367 int main(void) { return 0; }
4368 EOF
4369         esac
4370         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4371     fi
4372
4373     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4374     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4375     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4376     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4377     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4378     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4379
4380     [ $target_os = linux ] || [ $target_os = android ] ||
4381         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4382             $ARCH_EXT_LIST_ARM
4383
4384     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4385
4386     check_as <<EOF && enable as_arch_directive
4387 .arch armv7-a
4388 EOF
4389     check_as <<EOF && enable as_fpu_directive
4390 .fpu neon
4391 EOF
4392
4393     # llvm's integrated assembler supports .object_arch from llvm 3.5
4394     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4395         check_as <<EOF && enable as_object_arch
4396 .object_arch armv4
4397 EOF
4398
4399     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4400
4401 elif enabled mips; then
4402
4403     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4404
4405     # make sure that only an instruction set is enabled
4406     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4407
4408     if enabled mips64; then
4409         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4410             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4411                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4412     else
4413         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4414             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4415                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4416     fi
4417
4418 elif enabled parisc; then
4419
4420     if enabled gcc; then
4421         case $($cc -dumpversion) in
4422             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4423         esac
4424     fi
4425
4426 elif enabled ppc; then
4427
4428     enable local_aligned_8 local_aligned_16 local_aligned_32
4429
4430     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4431     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4432     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4433     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4434
4435     # AltiVec flags: The FSF version of GCC differs from the Apple version
4436     if enabled altivec; then
4437         check_cflags -maltivec -mabi=altivec &&
4438         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4439         check_cflags -faltivec
4440
4441         # check if our compiler supports Motorola AltiVec C API
4442         check_cc <<EOF || disable altivec
4443 $inc_altivec_h
4444 int main(void) {
4445     vector signed int v1 = (vector signed int) { 0 };
4446     vector signed int v2 = (vector signed int) { 1 };
4447     v1 = vec_add(v1, v2);
4448     return 0;
4449 }
4450 EOF
4451
4452         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4453     fi
4454
4455     if enabled vsx; then
4456         check_cflags -mvsx &&
4457         check_cc <<EOF || disable vsx
4458 $inc_altivec_h
4459 int main(void) {
4460     int v[4] = { 0 };
4461     vector signed int v1 = vec_vsx_ld(0, v);
4462     return 0;
4463 }
4464 EOF
4465     fi
4466
4467     if enabled power8; then
4468         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4469     fi
4470
4471 elif enabled x86; then
4472
4473     check_builtin rdtsc    intrin.h   "__rdtsc()"
4474     check_builtin mm_empty mmintrin.h "_mm_empty()"
4475
4476     enable local_aligned_8 local_aligned_16 local_aligned_32
4477
4478     # check whether EBP is available on x86
4479     # As 'i' is stored on the stack, this program will crash
4480     # if the base pointer is used to access it because the
4481     # base pointer is cleared in the inline assembly code.
4482     check_exec_crash <<EOF && enable ebp_available
4483 volatile int i=0;
4484 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4485 return i;
4486 EOF
4487
4488     # check whether EBX is available on x86
4489     check_inline_asm ebx_available '""::"b"(0)' &&
4490         check_inline_asm ebx_available '"":::"%ebx"'
4491
4492     # check whether xmm clobbers are supported
4493     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4494
4495     # check whether binutils is new enough to compile SSSE3/MMXEXT
4496     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4497     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4498
4499     probe_x86asm(){
4500         x86asmexe_probe=$1
4501         if check_cmd $x86asmexe_probe -v; then
4502             x86asmexe=$x86asmexe_probe
4503             x86asm_type=nasm
4504             x86asm_debug="-g -F dwarf"
4505             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4506         elif check_cmd $x86asmexe_probe --version; then
4507             x86asmexe=$x86asmexe_probe
4508             x86asm_type=yasm
4509             x86asm_debug="-g dwarf2"
4510             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4511         fi
4512         check_x86asm "movbe ecx, [5]" && enable x86asm
4513     }
4514
4515     if ! disabled_any asm mmx x86asm; then
4516         disable x86asm
4517         for program in $x86asmexe nasm yasm; do
4518             probe_x86asm $program && break
4519         done
4520         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4521         X86ASMFLAGS="-f $objformat"
4522         enabled pic               && append X86ASMFLAGS "-DPIC"
4523         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4524         case "$objformat" in
4525             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4526         esac
4527
4528         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4529         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4530         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4531         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4532         check_x86asm "CPU amdnop"                      || disable cpunop
4533     fi
4534
4535     case "$cpu" in
4536         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4537             disable fast_clz
4538         ;;
4539     esac
4540
4541 fi
4542
4543 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4544
4545 check_ldflags -Wl,--as-needed
4546
4547 if ! disabled network; then
4548     check_func getaddrinfo $network_extralibs
4549     check_func inet_aton $network_extralibs
4550
4551     check_type netdb.h "struct addrinfo"
4552     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4553     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4554     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4555     check_type poll.h "struct pollfd"
4556     check_type netinet/sctp.h "struct sctp_event_subscribe"
4557     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4558     check_type netinet/in.h "struct sockaddr_in6"
4559     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4560     check_type "sys/types.h sys/socket.h" socklen_t
4561
4562     # Prefer arpa/inet.h over winsock2
4563     if check_header arpa/inet.h ; then
4564         check_func closesocket
4565     elif check_header winsock2.h ; then
4566         check_func_headers winsock2.h closesocket -lws2 &&
4567             network_extralibs="-lws2" ||
4568         { check_func_headers winsock2.h closesocket -lws2_32 &&
4569             network_extralibs="-lws2_32"; } || disable winsock2_h network
4570         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4571
4572         check_type ws2tcpip.h socklen_t
4573         check_type ws2tcpip.h "struct addrinfo"
4574         check_type ws2tcpip.h "struct group_source_req"
4575         check_type ws2tcpip.h "struct ip_mreq_source"
4576         check_type ws2tcpip.h "struct ipv6_mreq"
4577         check_type winsock2.h "struct pollfd"
4578         check_struct winsock2.h "struct sockaddr" sa_len
4579         check_type ws2tcpip.h "struct sockaddr_in6"
4580         check_type ws2tcpip.h "struct sockaddr_storage"
4581     else
4582         disable network
4583     fi
4584 fi
4585
4586 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4587 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4588 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4589 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4590
4591 case "$custom_allocator" in
4592     jemalloc)
4593         # jemalloc by default does not use a prefix
4594         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4595     ;;
4596     tcmalloc)
4597         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4598         malloc_prefix=tc_
4599     ;;
4600 esac
4601
4602 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4603 check_func  ${malloc_prefix}memalign            && enable memalign
4604 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4605
4606 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4607     { check_lib clock_gettime time.h clock_gettime ||
4608       check_lib clock_gettime time.h clock_gettime -lrt; }
4609
4610 check_func  fcntl
4611 check_func  fork
4612 check_func  gethrtime
4613 check_func  getopt
4614 check_func  getrusage
4615 check_func  gettimeofday
4616 check_func  gmtime_r
4617 check_func  isatty
4618 check_func  localtime_r
4619 check_func  mach_absolute_time
4620 check_func  mkstemp
4621 check_func  mmap
4622 check_func  mprotect
4623 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4624 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4625 check_func  sched_getaffinity
4626 check_func  setrlimit
4627 check_func  strerror_r
4628 check_func  sysconf
4629 check_func  sysctl
4630 check_func  usleep
4631
4632 check_func_headers io.h setmode
4633 check_func_headers stdlib.h getenv
4634
4635 check_func_headers windows.h GetProcessAffinityMask
4636 check_func_headers windows.h GetProcessTimes
4637 check_func_headers windows.h GetSystemTimeAsFileTime
4638 check_func_headers windows.h LoadLibrary
4639 check_func_headers windows.h MapViewOfFile
4640 check_func_headers windows.h SetConsoleTextAttribute
4641 check_func_headers windows.h Sleep
4642 check_func_headers windows.h VirtualAlloc
4643 check_struct windows.h "CONDITION_VARIABLE" Ptr
4644
4645 check_header d3d11.h
4646 check_header direct.h
4647 check_header dlfcn.h
4648 check_header dxva.h
4649 check_header dxva2api.h
4650 check_header io.h
4651 check_header mach/mach_time.h
4652 check_header malloc.h
4653 check_header poll.h
4654 check_header sys/mman.h
4655 check_header sys/param.h
4656 check_header sys/resource.h
4657 check_header sys/select.h
4658 check_header sys/time.h
4659 check_header sys/un.h
4660 check_header unistd.h
4661 check_header valgrind/valgrind.h
4662 check_header VideoDecodeAcceleration/VDADecoder.h
4663 check_header windows.h
4664
4665 # it seems there are versions of clang in some distros that try to use the
4666 # gcc headers, which explodes for stdatomic
4667 # so we also check that atomics actually work here
4668 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4669
4670 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4671 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4672 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4673
4674 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4675
4676 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4677 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4678 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4679
4680 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4681 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4682 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4683 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4684 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4685 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4686 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4687 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4688 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4689
4690 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4691
4692 if ! disabled w32threads && ! enabled pthreads; then
4693     check_lib w32threads "windows.h process.h" _beginthreadex
4694 fi
4695
4696 # check for some common methods of building with pthread support
4697 # do this before the optional library checks as some of them require pthreads
4698 if ! disabled pthreads && ! enabled w32threads; then
4699     if check_lib pthreads pthread.h pthread_join -pthread; then
4700         add_cflags -pthread
4701     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4702         add_cflags -pthreads
4703     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4704         :
4705     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4706         :
4707     elif check_func pthread_join; then
4708         enable pthreads
4709     fi
4710 fi
4711
4712 enabled pthreads &&
4713     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4714
4715 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4716 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4717
4718 # On some systems dynamic loading requires no extra linker flags
4719 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4720
4721 check_lib libm math.h sin -lm
4722
4723 atan2f_args=2
4724 ldexpf_args=2
4725 powf_args=2
4726
4727 for func in $MATH_FUNCS; do
4728     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4729 done
4730
4731 # these are off by default, so fail if requested and not available
4732 enabled avisynth          && require_header avisynth/avisynth_c.h
4733 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4734 enabled cuda              && require cuda cuda.h cuInit -lcuda
4735 enabled frei0r            && require_header frei0r.h
4736 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4737 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4738 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4739 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4740 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4741 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4742 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4743 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4744 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4745                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4746                                done || die "ERROR: libgsm not found"; }
4747 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4748 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4749 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4750 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4751 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4752 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4753 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4754 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4755 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4756 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4757 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4758                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4759 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4760 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4761 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4762 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4763 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4764 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4765 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4766 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4767 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4768 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4769 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4770 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4771                              { enabled libvpx_vp8_decoder &&
4772                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4773                                enabled libvpx_vp8_encoder &&
4774                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4775                                enabled libvpx_vp9_decoder &&
4776                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4777                                enabled libvpx_vp9_encoder &&
4778                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4779                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4780                                    die "libvpx enabled but no supported decoders/encoders found"
4781                              }
4782 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4783 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4784 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4785                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4786                              { check_cpp_condition x264.h "X264_MPEG2" &&
4787                                enable libx262; }
4788 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4789                              require_cpp_condition x265.h "X265_BUILD >= 57"
4790 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4791 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4792 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4793                                { ! enabled cross_compile &&
4794                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4795                                  add_ldflags -L/opt/vc/lib/ &&
4796                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4797                                die "ERROR: mmal not found" &&
4798                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4799 enabled omx               && require_header OMX_Core.h
4800 enabled omx_rpi           && { check_header OMX_Core.h ||
4801                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4802                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4803 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4804                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4805                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4806                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4807                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4808                                die "ERROR: openssl not found"; }
4809
4810 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4811
4812 if enabled nvenc; then
4813     require_header nvEncodeAPI.h
4814     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4815 fi
4816
4817 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4818 if enabled avplay; then
4819     CFLAGS_SAVE=$CFLAGS
4820     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4821     sdl_cflags=$pkg_cflags
4822     CFLAGS=$CFLAGS_SAVE
4823 fi
4824
4825 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4826 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4827
4828 check_header linux/fb.h
4829 check_header linux/videodev2.h
4830 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4831
4832 check_header AVFoundation/AVFoundation.h