build: Drop redundant check for soundcard.h
[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-cuvid   Nvidia CUVID video decode acceleration
241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
244   --enable-libnpp  Nvidia CUDA processing
245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
246   --enable-nvenc   Nvidia video encoding
247   --enable-omx     OpenMAX IL
248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
250   --enable-vda     Apple Video Decode Acceleration [auto]
251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
252
253 Toolchain options:
254   --arch=ARCH              select architecture [$arch]
255   --cpu=CPU                select the minimum required CPU (affects
256                            instruction selection, may crash on older CPUs)
257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
258   --enable-cross-compile   assume a cross-compiler is used
259   --sysroot=PATH           root of cross-build tree
260   --sysinclude=PATH        location of cross-build system headers
261   --target-os=OS           compiler targets OS [$target_os]
262   --target-exec=CMD        command to run executables on target
263   --target-path=DIR        path to view of build directory on target
264   --target-samples=DIR     path to samples directory on target
265   --toolchain=NAME         set tool defaults according to NAME
266   --nm=NM                  use nm tool
267   --ar=AR                  use archive tool AR [$ar_default]
268   --as=AS                  use assembler AS [$as_default]
269   --cc=CC                  use C compiler CC [$cc_default]
270   --objcc=OCC              use ObjC compiler OCC [$cc_default]
271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
272   --ld=LD                  use linker LD
273   --x86asmexe=X86ASM       use x86 assembler X86ASM
274   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
275   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
276   --host-cc=HOSTCC         use host C compiler HOSTCC
277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
279   --host-ld=HOSTLD         use host linker HOSTLD
280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
281   --host-libs=HLIBS        use libs HLIBS when linking for host
282   --host-os=OS             compiler host OS [$target_os]
283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
284   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
286   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
287   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
289   --extra-version=STRING   version string suffix []
290   --optflags=OPTFLAGS      override optimization-related compiler flags
291   --enable-pic             build position-independent code
292   --enable-thumb           compile for Thumb instruction set
293   --enable-lto             use link-time optimization
294   --env="ENV=override"     override the environment variables
295
296 Advanced options (experts only):
297   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
298   --custom-allocator=NAME  use a supported custom allocator
299   --disable-symver         disable symbol versioning
300   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
301   --disable-safe-bitstream-reader
302                            disable buffer boundary checking in bitreaders
303                            (faster, but may crash)
304   --enable-sram            allow use of on-chip SRAM
305
306 Optimization options (experts only):
307   --disable-asm            disable all assembly optimizations
308   --disable-altivec        disable AltiVec optimizations
309   --disable-vsx            disable VSX optimizations
310   --disable-power8         disable POWER8 optimizations
311   --disable-amd3dnow       disable 3DNow! optimizations
312   --disable-amd3dnowext    disable 3DNow! extended optimizations
313   --disable-mmx            disable MMX optimizations
314   --disable-mmxext         disable MMXEXT optimizations
315   --disable-sse            disable SSE optimizations
316   --disable-sse2           disable SSE2 optimizations
317   --disable-sse3           disable SSE3 optimizations
318   --disable-ssse3          disable SSSE3 optimizations
319   --disable-sse4           disable SSE4 optimizations
320   --disable-sse42          disable SSE4.2 optimizations
321   --disable-avx            disable AVX optimizations
322   --disable-xop            disable XOP optimizations
323   --disable-fma3           disable FMA3 optimizations
324   --disable-fma4           disable FMA4 optimizations
325   --disable-avx2           disable AVX2 optimizations
326   --disable-armv5te        disable armv5te optimizations
327   --disable-armv6          disable armv6 optimizations
328   --disable-armv6t2        disable armv6t2 optimizations
329   --disable-vfp            disable VFP optimizations
330   --disable-neon           disable NEON optimizations
331   --disable-inline-asm     disable use of inline assembly
332   --disable-x86asm         disable use of standalone x86 assembly
333
334 Developer options (useful when working on Libav itself):
335   --disable-debug          disable debugging symbols
336   --enable-debug=LEVEL     set the debug level [$debuglevel]
337   --disable-optimizations  disable compiler optimizations
338   --enable-extra-warnings  enable more compiler warnings
339   --samples=PATH           location of test samples for FATE, if not set use
340                            \$LIBAV_SAMPLES at make invocation time.
341   --enable-neon-clobber-test check NEON registers for clobbering (should be
342                            used only for debugging purposes)
343   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
344                            should be used only for debugging purposes)
345   --enable-random          randomly enable/disable components
346   --disable-random
347   --enable-random=LIST     randomly enable/disable specific components or
348   --disable-random=LIST    component groups. LIST is a comma-separated list
349                            of NAME[:PROB] entries where NAME is a component
350                            (group) and PROB the probability associated with
351                            NAME (default 0.5).
352   --random-seed=VALUE      seed value for --enable/disable-random
353   --disable-valgrind-backtrace do not print a backtrace under Valgrind
354                            (only applies to --disable-optimizations builds)
355   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
356                            in the name) of tests whose result is ignored
357
358 NOTE: Object files are built at the place where configure is launched.
359 EOF
360   exit 0
361 }
362
363 quotes='""'
364
365 log(){
366     echo "$@" >> $logfile
367 }
368
369 log_file(){
370     log BEGIN $1
371     i=1
372     while read line; do
373         printf '%5s   %s\n' "${i}" "${line}"
374         i=$(($i+1))
375     done < $1 >> $logfile
376     log END $1
377 }
378
379 echolog(){
380     log "$@"
381     echo "$@"
382 }
383
384 warn(){
385     log "WARNING: $*"
386     WARNINGS="${WARNINGS}WARNING: $*\n"
387 }
388
389 die(){
390     echolog "$@"
391     cat <<EOF
392
393 If you think configure made a mistake, make sure you are using the latest
394 version from Git.  If the latest version fails, report the problem to the
395 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
396 EOF
397     if disabled logging; then
398         cat <<EOF
399 Rerun configure with logging enabled (do not use --disable-logging), and
400 include the log this produces with your report.
401 EOF
402     else
403         cat <<EOF
404 Include the log file "$logfile" produced by configure as this will help
405 solving the problem.
406 EOF
407     fi
408     exit 1
409 }
410
411 # Avoid locale weirdness, besides we really just want to translate ASCII.
412 toupper(){
413     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
414 }
415
416 tolower(){
417     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
418 }
419
420 c_escape(){
421     echo "$*" | sed 's/["\\]/\\\0/g'
422 }
423
424 sh_quote(){
425     v=$(echo "$1" | sed "s/'/'\\\\''/g")
426     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
427     echo "$v"
428 }
429
430 cleanws(){
431     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
432 }
433
434 filter(){
435     pat=$1
436     shift
437     for v; do
438         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
439     done
440 }
441
442 filter_out(){
443     pat=$1
444     shift
445     for v; do
446         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
447     done
448 }
449
450 map(){
451     m=$1
452     shift
453     for v; do eval $m; done
454 }
455
456 add_suffix(){
457     suffix=$1
458     shift
459     for v; do echo ${v}${suffix}; done
460 }
461
462 set_all(){
463     value=$1
464     shift
465     for var in $*; do
466         eval $var=$value
467     done
468 }
469
470 set_weak(){
471     value=$1
472     shift
473     for var; do
474         eval : \${$var:=$value}
475     done
476 }
477
478 sanitize_var_name(){
479     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
480 }
481
482 set_sanitized(){
483     var=$1
484     shift
485     eval $(sanitize_var_name "$var")='$*'
486 }
487
488 get_sanitized(){
489     eval echo \$$(sanitize_var_name "$1")
490 }
491
492 pushvar(){
493     for pvar in $*; do
494         eval level=\${${pvar}_level:=0}
495         eval ${pvar}_${level}="\$$pvar"
496         eval ${pvar}_level=$(($level+1))
497     done
498 }
499
500 popvar(){
501     for pvar in $*; do
502         eval level=\${${pvar}_level:-0}
503         test $level = 0 && continue
504         eval level=$(($level-1))
505         eval $pvar="\${${pvar}_${level}}"
506         eval ${pvar}_level=$level
507         eval unset ${pvar}_${level}
508     done
509 }
510
511 enable(){
512     set_all yes $*
513 }
514
515 disable(){
516     set_all no $*
517 }
518
519 enable_weak(){
520     set_weak yes $*
521 }
522
523 disable_weak(){
524     set_weak no $*
525 }
526
527 enable_sanitized(){
528     for var; do
529         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 disable_sanitized(){
534     for var; do
535         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
536     done
537 }
538
539 do_enable_deep(){
540     for var; do
541         enabled $var && continue
542         eval sel="\$${var}_select"
543         eval sgs="\$${var}_suggest"
544         pushvar var sgs
545         enable_deep $sel
546         popvar sgs
547         enable_deep_weak $sgs
548         popvar var
549     done
550 }
551
552 enable_deep(){
553     do_enable_deep $*
554     enable $*
555 }
556
557 enable_deep_weak(){
558     for var; do
559         disabled $var && continue
560         pushvar var
561         do_enable_deep $var
562         popvar var
563         enable_weak $var
564     done
565 }
566
567 enabled(){
568     test "${1#!}" = "$1" && op== || op=!=
569     eval test "x\$${1#!}" $op "xyes"
570 }
571
572 disabled(){
573     test "${1#!}" = "$1" && op== || op=!=
574     eval test "x\$${1#!}" $op "xno"
575 }
576
577 enabled_all(){
578     for opt; do
579         enabled $opt || return 1
580     done
581 }
582
583 disabled_all(){
584     for opt; do
585         disabled $opt || return 1
586     done
587 }
588
589 enabled_any(){
590     for opt; do
591         enabled $opt && return 0
592     done
593 }
594
595 disabled_any(){
596     for opt; do
597         disabled $opt && return 0
598     done
599     return 1
600 }
601
602 set_default(){
603     for opt; do
604         eval : \${$opt:=\$${opt}_default}
605     done
606 }
607
608 is_in(){
609     value=$1
610     shift
611     for var in $*; do
612         [ $var = $value ] && return 0
613     done
614     return 1
615 }
616
617 check_deps(){
618     for cfg; do
619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
620         disabled ${cfg}_checking && continue
621         enable ${cfg}_checking
622
623         eval dep_all="\$${cfg}_deps"
624         eval dep_any="\$${cfg}_deps_any"
625         eval dep_con="\$${cfg}_conflict"
626         eval dep_sel="\$${cfg}_select"
627         eval dep_sgs="\$${cfg}_suggest"
628         eval dep_ifa="\$${cfg}_if"
629         eval dep_ifn="\$${cfg}_if_any"
630
631         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
632         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
633         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
634
635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
637         enabled_all  $dep_all || disable $cfg
638         enabled_any  $dep_any || disable $cfg
639         disabled_all $dep_con || disable $cfg
640         disabled_any $dep_sel && disable $cfg
641
642         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
643
644         for dep in $dep_all $dep_any $dep_sel $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
650         disable ${cfg}_checking
651     done
652 }
653
654 print_config(){
655     pfx=$1
656     files=$2
657     shift 2
658     map 'eval echo "$v \${$v:-no}"' "$@" |
659     awk "BEGIN { split(\"$files\", files) }
660         {
661             c = \"$pfx\" toupper(\$1);
662             v = \$2;
663             sub(/yes/, 1, v);
664             sub(/no/,  0, v);
665             for (f in files) {
666                 file = files[f];
667                 if (file ~ /\\.h\$/) {
668                     printf(\"#define %s %d\\n\", c, v) >>file;
669                 } else if (file ~ /\\.asm\$/) {
670                     printf(\"%%define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.mak\$/) {
672                     n = -v ? \"\" : \"!\";
673                     printf(\"%s%s=yes\\n\", n, c) >>file;
674                 }
675             }
676         }"
677 }
678
679 print_enabled(){
680     suf=$1
681     shift
682     for v; do
683         enabled $v && printf "%s\n" ${v%$suf}
684     done
685 }
686
687 append(){
688     var=$1
689     shift
690     eval "$var=\"\$$var $*\""
691 }
692
693 prepend(){
694     var=$1
695     shift
696     eval "$var=\"$* \$$var\""
697 }
698
699 unique(){
700     var=$1
701     uniq_list=""
702     for tok in $(eval echo \$$var); do
703         uniq_list="$(filter_out $tok $uniq_list) $tok"
704     done
705     eval "$var=\"${uniq_list}\""
706 }
707
708 resolve(){
709     var=$1
710     tmpvar=
711     for entry in $(eval echo \$$var); do
712         tmpvar="$tmpvar $(eval echo \$${entry})"
713     done
714     eval "$var=\"${tmpvar}\""
715 }
716
717 add_cppflags(){
718     append CPPFLAGS "$@"
719 }
720
721 add_cflags(){
722     append CFLAGS $($cflags_filter "$@")
723 }
724
725 add_cflags_headers(){
726     append CFLAGS_HEADERS $($cflags_filter "$@")
727 }
728
729 add_asflags(){
730     append ASFLAGS $($asflags_filter "$@")
731 }
732
733 add_objcflags(){
734     append OBJCFLAGS $($objcflags_filter "$@")
735 }
736
737 add_ldflags(){
738     append LDFLAGS $($ldflags_filter "$@")
739 }
740
741 add_ldexeflags(){
742     append LDEXEFLAGS $($ldflags_filter "$@")
743 }
744
745 add_ldsoflags(){
746     append LDSOFLAGS $($ldflags_filter "$@")
747 }
748
749 add_stripflags(){
750     append STRIPFLAGS "$@"
751 }
752
753 add_extralibs(){
754     prepend extralibs $($ldflags_filter "$@")
755 }
756
757 add_host_cppflags(){
758     append host_cppflags "$@"
759 }
760
761 add_host_cflags(){
762     append host_cflags $($host_cflags_filter "$@")
763 }
764
765 add_host_ldflags(){
766     append host_ldflags $($host_ldflags_filter "$@")
767 }
768
769 add_compat(){
770     append compat_objs $1
771     shift
772     map 'add_cppflags -D$v' "$@"
773 }
774
775 check_cmd(){
776     log "$@"
777     "$@" >> $logfile 2>&1
778 }
779
780 cc_o(){
781     eval printf '%s\\n' $CC_O
782 }
783
784 cc_e(){
785     eval printf '%s\\n' $CC_E
786 }
787
788 check_cc(){
789     log check_cc "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
793 }
794
795 check_objcc(){
796     log check_objcc "$@"
797     cat > $TMPC
798     log_file $TMPC
799     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
800 }
801
802 check_cpp(){
803     log check_cpp "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
807 }
808
809 as_o(){
810     eval printf '%s\\n' $AS_O
811 }
812
813 check_as(){
814     log check_as "$@"
815     cat > $TMPS
816     log_file $TMPS
817     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
818 }
819
820 check_inline_asm(){
821     log check_inline_asm "$@"
822     name="$1"
823     code="$2"
824     shift 2
825     disable $name
826     check_cc "$@" <<EOF && enable $name
827 void foo(void){ __asm__ volatile($code); }
828 EOF
829 }
830
831 check_insn(){
832     log check_insn "$@"
833     check_inline_asm ${1}_inline "\"$2\""
834     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
835 }
836
837 check_x86asm(){
838     log check_x86asm "$@"
839     echo "$1" > $TMPS
840     log_file $TMPS
841     shift 1
842     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
843 }
844
845 ld_o(){
846     eval printf '%s\\n' $LD_O
847 }
848
849 check_ld(){
850     log check_ld "$@"
851     flags=$(filter_out '-l*' "$@")
852     libs=$(filter '-l*' "$@")
853     check_cc $($cflags_filter $flags) || return
854     flags=$($ldflags_filter $flags)
855     libs=$($ldflags_filter $libs)
856     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
857 }
858
859 print_include(){
860     hdr=$1
861     test "${hdr%.h}" = "${hdr}" &&
862         echo "#include $hdr"    ||
863         echo "#include <$hdr>"
864 }
865
866 check_code(){
867     log check_code "$@"
868     check=$1
869     headers=$2
870     code=$3
871     shift 3
872     {
873         for hdr in $headers; do
874             print_include $hdr
875         done
876         echo "int main(void) { $code; return 0; }"
877     } | check_$check "$@"
878 }
879
880 check_cppflags(){
881     log check_cppflags "$@"
882     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
883 #include <stdlib.h>;
884 EOF
885 }
886
887 test_cflags(){
888     log test_cflags "$@"
889     set -- $($cflags_filter "$@")
890     check_cc "$@" <<EOF
891 int x;
892 EOF
893 }
894
895 check_cflags(){
896     log check_cflags "$@"
897     test_cflags "$@" && add_cflags "$@"
898 }
899
900 test_objcflags(){
901     log test_objcflags "$@"
902     set -- $($objcflags_filter "$@")
903     check_objcc "$@" <<EOF
904 int x;
905 EOF
906 }
907
908 check_objcflags(){
909     log check_objcflags "$@"
910     test_objcflags "$@" && add_objcflags "$@"
911 }
912
913 test_ldflags(){
914     log test_ldflags "$@"
915     check_ld "$@" <<EOF
916 int main(void){ return 0; }
917 EOF
918 }
919
920 check_ldflags(){
921     log check_ldflags "$@"
922     test_ldflags "$@" && add_ldflags "$@"
923 }
924
925 test_stripflags(){
926     log test_stripflags "$@"
927     # call check_cc to get a fresh TMPO
928     check_cc <<EOF
929 int main(void) { return 0; }
930 EOF
931     check_cmd $strip $STRIPFLAGS "$@" $TMPO
932 }
933
934 check_stripflags(){
935     log check_stripflags "$@"
936     test_stripflags "$@" && add_stripflags "$@"
937 }
938
939 check_header(){
940     log check_header "$@"
941     header=$1
942     shift
943     disable_sanitized $header
944     check_cpp "$@" <<EOF && enable_sanitized $header
945 #include <$header>
946 int x;
947 EOF
948 }
949
950 check_func(){
951     log check_func "$@"
952     func=$1
953     shift
954     disable $func
955     check_ld "$@" <<EOF && enable $func
956 extern int $func();
957 int main(void){ $func(); }
958 EOF
959 }
960
961 check_mathfunc(){
962     log check_mathfunc "$@"
963     func=$1
964     narg=$2
965     shift 2
966     test $narg = 2 && args="f, g" || args="f"
967     disable $func
968     check_ld "$@" <<EOF && enable $func
969 #include <math.h>
970 float foo(float f, float g) { return $func($args); }
971 int main(void){ return 0; }
972 EOF
973 }
974
975 check_func_headers(){
976     log check_func_headers "$@"
977     headers=$1
978     funcs=$2
979     shift 2
980     {
981         for hdr in $headers; do
982             print_include $hdr
983         done
984         for func in $funcs; do
985             echo "long check_$func(void) { return (long) $func; }"
986         done
987         echo "int main(void) { return 0; }"
988     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
989 }
990
991 check_cpp_condition(){
992     log check_cpp_condition "$@"
993     header=$1
994     condition=$2
995     shift 2
996     check_cpp "$@" <<EOF
997 #include <$header>
998 #if !($condition)
999 #error "unsatisfied condition: $condition"
1000 #endif
1001 EOF
1002 }
1003
1004 test_cflags_cpp(){
1005     log test_cflags_cpp "$@"
1006     flags=$1
1007     condition=$2
1008     shift 2
1009     set -- $($cflags_filter "$flags")
1010     check_cpp "$@" <<EOF
1011 #if !($condition)
1012 #error "unsatisfied condition: $condition"
1013 #endif
1014 EOF
1015 }
1016
1017 check_lib(){
1018     log check_lib "$@"
1019     name="$1"
1020     headers="$2"
1021     funcs="$3"
1022     shift 3
1023     disable $name
1024     check_func_headers "$headers" "$funcs" "$@" &&
1025         enable $name && eval ${name}_extralibs="\$@"
1026 }
1027
1028 test_pkg_config(){
1029     log test_pkg_config "$@"
1030     name="$1"
1031     pkg_version="$2"
1032     pkg="${2%% *}"
1033     headers="$3"
1034     funcs="$4"
1035     shift 4
1036     disable $name
1037     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1038     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1039     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1040     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1041         enable $name &&
1042         set_sanitized "${name}_cflags"    $pkg_cflags &&
1043         set_sanitized "${name}_extralibs" $pkg_libs
1044 }
1045
1046 check_pkg_config(){
1047     log check_pkg_config "$@"
1048     name="$1"
1049     test_pkg_config "$@" &&
1050         eval add_cflags \$${name}_cflags
1051 }
1052
1053 check_exec(){
1054     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1055 }
1056
1057 check_exec_crash(){
1058     log check_exec_crash "$@"
1059     code=$(cat)
1060
1061     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1062     # are safe but may not be available everywhere.  Thus we use
1063     # raise(SIGTERM) instead.  The check is run in a subshell so we
1064     # can redirect the "Terminated" message from the shell.  SIGBUS
1065     # is not defined by standard C so it is used conditionally.
1066
1067     (check_exec "$@") >> $logfile 2>&1 <<EOF
1068 #include <signal.h>
1069 static void sighandler(int sig){
1070     raise(SIGTERM);
1071 }
1072 int foo(void){
1073     $code
1074 }
1075 int (*func_ptr)(void) = foo;
1076 int main(void){
1077     signal(SIGILL, sighandler);
1078     signal(SIGFPE, sighandler);
1079     signal(SIGSEGV, sighandler);
1080 #ifdef SIGBUS
1081     signal(SIGBUS, sighandler);
1082 #endif
1083     return func_ptr();
1084 }
1085 EOF
1086 }
1087
1088 check_type(){
1089     log check_type "$@"
1090     headers=$1
1091     type=$2
1092     shift 2
1093     disable_sanitized "$type"
1094     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1095 }
1096
1097 check_struct(){
1098     log check_struct "$@"
1099     headers=$1
1100     struct=$2
1101     member=$3
1102     shift 3
1103     disable_sanitized "${struct}_${member}"
1104     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1105         enable_sanitized "${struct}_${member}"
1106 }
1107
1108 check_builtin(){
1109     log check_builtin "$@"
1110     name=$1
1111     headers=$2
1112     builtin=$3
1113     shift 3
1114     disable "$name"
1115     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1116 }
1117
1118 check_compile_assert(){
1119     log check_compile_assert "$@"
1120     name=$1
1121     headers=$2
1122     condition=$3
1123     shift 3
1124     disable "$name"
1125     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1126 }
1127
1128 require(){
1129     log require "$@"
1130     name_version="$1"
1131     name="${1%% *}"
1132     headers="$2"
1133     func="$3"
1134     shift 3
1135     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1136 }
1137
1138 require_header(){
1139     log require "$@"
1140     header="$1"
1141     shift
1142     check_header "$header" "$@" || die "ERROR: $header not found"
1143 }
1144
1145 require_cpp_condition(){
1146     log require "$@"
1147     header="$1"
1148     condition="$2"
1149     shift 2
1150     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1151 }
1152
1153 require_pkg_config(){
1154     log require_pkg_config "$@"
1155     pkg_version="$2"
1156     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1157 }
1158
1159 hostcc_e(){
1160     eval printf '%s\\n' $HOSTCC_E
1161 }
1162
1163 hostcc_o(){
1164     eval printf '%s\\n' $HOSTCC_O
1165 }
1166
1167 check_host_cc(){
1168     log check_host_cc "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1172 }
1173
1174 check_host_cpp(){
1175     log check_host_cpp "$@"
1176     cat > $TMPC
1177     log_file $TMPC
1178     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1179 }
1180
1181 check_host_cppflags(){
1182     log check_host_cppflags "$@"
1183     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1184 #include <stdlib.h>;
1185 EOF
1186 }
1187
1188 check_host_cflags(){
1189     log check_host_cflags "$@"
1190     set -- $($host_cflags_filter "$@")
1191     check_host_cc "$@" <<EOF && append host_cflags "$@"
1192 int x;
1193 EOF
1194 }
1195
1196 check_host_cpp_condition(){
1197     log check_host_cpp_condition "$@"
1198     header=$1
1199     condition=$2
1200     shift 2
1201     check_host_cpp "$@" <<EOF
1202 #include <$header>
1203 #if !($condition)
1204 #error "unsatisfied condition: $condition"
1205 #endif
1206 EOF
1207 }
1208
1209 apply(){
1210     file=$1
1211     shift
1212     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1213 }
1214
1215 cp_if_changed(){
1216     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1217     mkdir -p "$(dirname $2)"
1218     cp -f "$1" "$2"
1219 }
1220
1221 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1222 # system-dependent things.
1223
1224 AVCODEC_COMPONENTS="
1225     bsfs
1226     decoders
1227     encoders
1228     hwaccels
1229     parsers
1230 "
1231
1232 AVDEVICE_COMPONENTS="
1233     indevs
1234     outdevs
1235 "
1236 AVFILTER_COMPONENTS="
1237     filters
1238 "
1239 AVFORMAT_COMPONENTS="
1240     demuxers
1241     muxers
1242     protocols
1243 "
1244
1245 AVRESAMPLE_COMPONENTS=""
1246 AVUTIL_COMPONENTS=""
1247
1248 COMPONENT_LIST="
1249     $AVCODEC_COMPONENTS
1250     $AVDEVICE_COMPONENTS
1251     $AVFILTER_COMPONENTS
1252     $AVFORMAT_COMPONENTS
1253     $AVRESAMPLE_COMPONENTS
1254     $AVUTIL_COMPONENTS
1255 "
1256
1257 EXAMPLE_LIST="
1258     decode_audio_example
1259     decode_video_example
1260     encode_audio_example
1261     encode_video_example
1262     filter_audio_example
1263     metadata_example
1264     output_example
1265     qsvdec_example
1266     transcode_aac_example
1267 "
1268
1269 # catchall list of things that require external libs to link
1270 EXTRALIBS_LIST="
1271     cpu_init
1272     cws2fws
1273 "
1274
1275 HWACCEL_LIBRARY_NONFREE_LIST="
1276     cuda
1277     cuvid
1278     libnpp
1279 "
1280 HWACCEL_LIBRARY_LIST="
1281     $HWACCEL_LIBRARY_NONFREE_LIST
1282     d3d11va
1283     dxva2
1284     libmfx
1285     mmal
1286     nvenc
1287     omx
1288     vaapi
1289     vda
1290     vdpau
1291 "
1292
1293 EXTERNAL_LIBRARY_GPL_LIST="
1294     libcdio
1295     libx264
1296     libx265
1297     libxavs
1298     libxvid
1299 "
1300
1301 EXTERNAL_LIBRARY_NONFREE_LIST="
1302     libfaac
1303     libfdk_aac
1304     openssl
1305 "
1306
1307 EXTERNAL_LIBRARY_VERSION3_LIST="
1308     libopencore_amrnb
1309     libopencore_amrwb
1310     libvo_aacenc
1311     libvo_amrwbenc
1312 "
1313
1314 EXTERNAL_LIBRARY_LIST="
1315     $EXTERNAL_LIBRARY_GPL_LIST
1316     $EXTERNAL_LIBRARY_NONFREE_LIST
1317     $EXTERNAL_LIBRARY_VERSION3_LIST
1318     avisynth
1319     avxsynth
1320     frei0r
1321     gnutls
1322     libbs2b
1323     libdc1394
1324     libdcadec
1325     libfontconfig
1326     libfreetype
1327     libgsm
1328     libhdcd
1329     libilbc
1330     libjack
1331     libkvazaar
1332     libmp3lame
1333     libopencv
1334     libopenh264
1335     libopenjpeg
1336     libopus
1337     libpulse
1338     librtmp
1339     libschroedinger
1340     libsnappy
1341     libspeex
1342     libtheora
1343     libtwolame
1344     libvorbis
1345     libvpx
1346     libwavpack
1347     libwebp
1348     libxcb
1349     libxcb_shm
1350     libxcb_xfixes
1351 "
1352
1353 SYSTEM_LIBRARY_LIST="
1354     bzlib
1355     zlib
1356 "
1357
1358 FEATURE_LIST="
1359     gray
1360     hardcoded_tables
1361     omx_rpi
1362     runtime_cpudetect
1363     safe_bitstream_reader
1364     shared
1365     small
1366     sram
1367     static
1368     swscale_alpha
1369 "
1370
1371 LIBRARY_LIST="
1372     avcodec
1373     avdevice
1374     avfilter
1375     avformat
1376     avresample
1377     avutil
1378     swscale
1379 "
1380
1381 LICENSE_LIST="
1382     gpl
1383     nonfree
1384     version3
1385 "
1386
1387 PROGRAM_LIST="
1388     avconv
1389     avplay
1390     avprobe
1391 "
1392
1393 SUBSYSTEM_LIST="
1394     dct
1395     doc
1396     error_resilience
1397     faan
1398     fft
1399     lsp
1400     lzo
1401     mdct
1402     network
1403     rdft
1404 "
1405
1406 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1407 CONFIG_LIST="
1408     $EXAMPLE_LIST
1409     $EXTERNAL_LIBRARY_LIST
1410     $HWACCEL_LIBRARY_LIST
1411     $FEATURE_LIST
1412     $LICENSE_LIST
1413     $LIBRARY_LIST
1414     $PROGRAM_LIST
1415     $SUBSYSTEM_LIST
1416     $SYSTEM_LIBRARY_LIST
1417     neon_clobber_test
1418     pic
1419     pod2man
1420     texi2html
1421     thumb
1422     valgrind_backtrace
1423     xmm_clobber_test
1424     $COMPONENT_LIST
1425 "
1426
1427 THREADS_LIST="
1428     pthreads
1429     w32threads
1430 "
1431
1432 ATOMICS_LIST="
1433     atomics_gcc
1434     atomics_suncc
1435     atomics_win32
1436 "
1437
1438 ARCH_LIST="
1439     aarch64
1440     alpha
1441     arm
1442     avr32
1443     avr32_ap
1444     avr32_uc
1445     bfin
1446     ia64
1447     m68k
1448     mips
1449     mips64
1450     parisc
1451     ppc
1452     ppc64
1453     s390
1454     sh4
1455     sparc
1456     sparc64
1457     tilegx
1458     tilepro
1459     tomi
1460     x86
1461     x86_32
1462     x86_64
1463 "
1464
1465 ARCH_EXT_LIST_ARM="
1466     armv5te
1467     armv6
1468     armv6t2
1469     armv8
1470     neon
1471     vfp
1472     vfpv3
1473 "
1474
1475 ARCH_EXT_LIST_X86_SIMD="
1476     amd3dnow
1477     amd3dnowext
1478     avx
1479     avx2
1480     fma3
1481     fma4
1482     mmx
1483     mmxext
1484     sse
1485     sse2
1486     sse3
1487     sse4
1488     sse42
1489     ssse3
1490     xop
1491 "
1492
1493 ARCH_EXT_LIST_PPC="
1494     altivec
1495     dcbzl
1496     ldbrx
1497     power8
1498     ppc4xx
1499     vsx
1500 "
1501
1502 ARCH_EXT_LIST_X86="
1503     $ARCH_EXT_LIST_X86_SIMD
1504     cpunop
1505     i686
1506 "
1507
1508 ARCH_EXT_LIST_MIPS="
1509     loongson
1510     mips32r1
1511     mips64r1
1512     mips32r2
1513     mips64r2
1514     mips32r6
1515     mips64r6
1516 "
1517
1518 ARCH_EXT_LIST="
1519     $ARCH_EXT_LIST_ARM
1520     $ARCH_EXT_LIST_MIPS
1521     $ARCH_EXT_LIST_PPC
1522     $ARCH_EXT_LIST_X86
1523     vis
1524 "
1525
1526 ARCH_FEATURES="
1527     aligned_stack
1528     fast_64bit
1529     fast_clz
1530     fast_cmov
1531     local_aligned_8
1532     local_aligned_16
1533     local_aligned_32
1534     simd_align_16
1535     simd_align_32
1536 "
1537
1538 BUILTIN_LIST="
1539     atomic_cas_ptr
1540     machine_rw_barrier
1541     MemoryBarrier
1542     mm_empty
1543     rdtsc
1544     sem_timedwait
1545     sync_val_compare_and_swap
1546 "
1547 HAVE_LIST_CMDLINE="
1548     inline_asm
1549     symver
1550     x86asm
1551 "
1552
1553 HAVE_LIST_PUB="
1554     bigendian
1555     fast_unaligned
1556 "
1557
1558 HEADERS_LIST="
1559     AVFoundation_AVFoundation_h
1560     arpa_inet_h
1561     cdio_paranoia_h
1562     cdio_paranoia_paranoia_h
1563     dispatch_dispatch_h
1564     dev_bktr_ioctl_bt848_h
1565     dev_bktr_ioctl_meteor_h
1566     dev_ic_bt8xx_h
1567     dev_video_bktr_ioctl_bt848_h
1568     dev_video_meteor_ioctl_meteor_h
1569     direct_h
1570     dxgidebug_h
1571     dxva_h
1572     io_h
1573     mach_mach_time_h
1574     machine_ioctl_bt848_h
1575     machine_ioctl_meteor_h
1576     malloc_h
1577     poll_h
1578     stdatomic_h
1579     sys_param_h
1580     sys_resource_h
1581     sys_select_h
1582     sys_soundcard_h
1583     sys_time_h
1584     sys_un_h
1585     sys_videoio_h
1586     unistd_h
1587     valgrind_valgrind_h
1588     windows_h
1589     winsock2_h
1590 "
1591
1592 INTRINSICS_LIST="
1593     intrinsics_neon
1594 "
1595
1596 MATH_FUNCS="
1597     atanf
1598     atan2f
1599     cbrtf
1600     cosf
1601     exp2
1602     exp2f
1603     expf
1604     isinf
1605     isnan
1606     ldexpf
1607     llrint
1608     llrintf
1609     log2
1610     log2f
1611     log10f
1612     lrint
1613     lrintf
1614     powf
1615     rint
1616     round
1617     roundf
1618     sinf
1619     trunc
1620     truncf
1621 "
1622
1623 SYSTEM_FUNCS="
1624     aligned_malloc
1625     clock_gettime
1626     closesocket
1627     CommandLineToArgvW
1628     CryptGenRandom
1629     fcntl
1630     fork
1631     getaddrinfo
1632     gethrtime
1633     getopt
1634     GetProcessAffinityMask
1635     GetProcessMemoryInfo
1636     GetProcessTimes
1637     getrusage
1638     GetSystemTimeAsFileTime
1639     gettimeofday
1640     gmtime_r
1641     inet_aton
1642     isatty
1643     localtime_r
1644     mach_absolute_time
1645     MapViewOfFile
1646     memalign
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     CUVIDDECODECREATEINFO_bitDepthMinus8
1688     socklen_t
1689     struct_addrinfo
1690     struct_group_source_req
1691     struct_ip_mreq_source
1692     struct_ipv6_mreq
1693     struct_pollfd
1694     struct_rusage_ru_maxrss
1695     struct_sockaddr_in6
1696     struct_sockaddr_sa_len
1697     struct_sockaddr_storage
1698     struct_v4l2_frmivalenum_discrete
1699 "
1700
1701 HAVE_LIST="
1702     $ARCH_EXT_LIST
1703     $(add_suffix _external $ARCH_EXT_LIST)
1704     $(add_suffix _inline   $ARCH_EXT_LIST)
1705     $ARCH_FEATURES
1706     $BUILTIN_LIST
1707     $HAVE_LIST_CMDLINE
1708     $HAVE_LIST_PUB
1709     $HEADERS_LIST
1710     $INTRINSICS_LIST
1711     $MATH_FUNCS
1712     $SYSTEM_FUNCS
1713     $THREADS_LIST
1714     $TOOLCHAIN_FEATURES
1715     $TYPES_LIST
1716     dos_paths
1717     libc_msvcrt
1718     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1719     sdl
1720     section_data_rel_ro
1721     threads
1722     uwp
1723     vaapi_drm
1724     vaapi_x11
1725     vdpau_x11
1726 "
1727
1728 # options emitted with CONFIG_ prefix but not available on the command line
1729 CONFIG_EXTRA="
1730     aandcttables
1731     ac3dsp
1732     adts_header
1733     audio_frame_queue
1734     audiodsp
1735     blockdsp
1736     bswapdsp
1737     cabac
1738     cbs
1739     cbs_h264
1740     cbs_h265
1741     cbs_mpeg2
1742     dirac_parse
1743     dvprofile
1744     faandct
1745     faanidct
1746     fdctdsp
1747     flacdsp
1748     fmtconvert
1749     g722dsp
1750     gmp
1751     golomb
1752     gplv3
1753     h263dsp
1754     h264chroma
1755     h264dsp
1756     h264parse
1757     h264pred
1758     h264qpel
1759     hevcparse
1760     hpeldsp
1761     huffman
1762     huffyuvdsp
1763     huffyuvencdsp
1764     idctdsp
1765     iirfilter
1766     imdct15
1767     intrax8
1768     iso_media
1769     ividsp
1770     jpegtables
1771     lgplv3
1772     libx262
1773     libxcb_shape
1774     lpc
1775     lzf
1776     me_cmp
1777     mpeg_er
1778     mpegaudio
1779     mpegaudiodsp
1780     mpegaudioheader
1781     mpegvideo
1782     mpegvideoenc
1783     mss34dsp
1784     pixblockdsp
1785     qpeldsp
1786     qsv
1787     qsvdec
1788     qsvenc
1789     qsvvpp
1790     rangecoder
1791     riffdec
1792     riffenc
1793     rtpdec
1794     rtpenc_chain
1795     rv34dsp
1796     sinewin
1797     snappy
1798     srtp
1799     startcode
1800     texturedsp
1801     texturedspenc
1802     tpeldsp
1803     vaapi_encode
1804     vc1dsp
1805     videodsp
1806     vp3dsp
1807     vp56dsp
1808     vp8dsp
1809     wma_freqs
1810     wmv2dsp
1811 "
1812
1813 CMDLINE_SELECT="
1814     $ARCH_EXT_LIST
1815     $CONFIG_LIST
1816     $HAVE_LIST_CMDLINE
1817     $THREADS_LIST
1818     asm
1819     cross_compile
1820     debug
1821     extra_warnings
1822     logging
1823     lto
1824     optimizations
1825     rpath
1826 "
1827
1828 PATHS_LIST="
1829     bindir
1830     datadir
1831     docdir
1832     incdir
1833     libdir
1834     mandir
1835     prefix
1836     shlibdir
1837 "
1838
1839 CMDLINE_SET="
1840     $PATHS_LIST
1841     ar
1842     arch
1843     as
1844     cc
1845     objcc
1846     cpu
1847     cross_prefix
1848     custom_allocator
1849     dep_cc
1850     env
1851     extra_version
1852     host_cc
1853     host_cflags
1854     host_extralibs
1855     host_ld
1856     host_ldflags
1857     host_os
1858     ignore_tests
1859     ld
1860     logfile
1861     malloc_prefix
1862     nm
1863     optflags
1864     pkg_config
1865     pkg_config_flags
1866     random_seed
1867     samples
1868     sysinclude
1869     sysroot
1870     target_exec
1871     target_os
1872     target_path
1873     target_samples
1874     toolchain
1875     x86asmexe
1876 "
1877
1878 CMDLINE_APPEND="
1879     extra_cflags
1880     extra_objcflags
1881     host_cppflags
1882 "
1883
1884 # code dependency declarations
1885
1886 # architecture extensions
1887
1888 armv5te_deps="arm"
1889 armv6_deps="arm"
1890 armv6t2_deps="arm"
1891 armv8_deps="aarch64"
1892 neon_deps_any="aarch64 arm"
1893 intrinsics_neon_deps="neon"
1894 vfp_deps_any="aarch64 arm"
1895 vfpv3_deps="vfp"
1896
1897 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1898
1899 altivec_deps="ppc"
1900 dcbzl_deps="ppc"
1901 ldbrx_deps="ppc"
1902 ppc4xx_deps="ppc"
1903 vsx_deps="altivec"
1904 power8_deps="vsx"
1905
1906 loongson_deps="mips"
1907 mips32r1_deps="mips32"
1908 mips32r2_deps="mips32"
1909 mips32r6_deps="mips32"
1910 mips64r1_deps="mips64"
1911 mips64r2_deps="mips64"
1912 mips64r6_deps="mips64"
1913
1914 vis_deps="sparc"
1915
1916 cpunop_deps="i686"
1917 x86_64_select="i686"
1918 x86_64_suggest="fast_cmov"
1919
1920 amd3dnow_deps="mmx"
1921 amd3dnowext_deps="amd3dnow"
1922 i686_deps="x86"
1923 mmx_deps="x86"
1924 mmxext_deps="mmx"
1925 sse_deps="mmxext"
1926 sse2_deps="sse"
1927 sse3_deps="sse2"
1928 ssse3_deps="sse3"
1929 sse4_deps="ssse3"
1930 sse42_deps="sse4"
1931 avx_deps="sse42"
1932 xop_deps="avx"
1933 fma3_deps="avx"
1934 fma4_deps="avx"
1935 avx2_deps="avx"
1936
1937 mmx_external_deps="x86asm"
1938 mmx_inline_deps="inline_asm x86"
1939 mmx_suggest="mmx_external mmx_inline"
1940
1941 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1942     eval dep=\$${ext}_deps
1943     eval ${ext}_external_deps='"${dep}_external"'
1944     eval ${ext}_inline_deps='"${dep}_inline"'
1945     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1946 done
1947
1948 aligned_stack_if_any="aarch64 ppc x86"
1949 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1950 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1951 fast_unaligned_if_any="aarch64 ppc x86"
1952 simd_align_16_if_any="altivec neon sse"
1953 simd_align_32_if_any="avx"
1954
1955 # system capabilities
1956 symver_if_any="symver_asm_label symver_gnu_asm"
1957 valgrind_backtrace_conflict="optimizations"
1958 valgrind_backtrace_deps="valgrind_valgrind_h"
1959
1960 # threading support
1961 atomics_gcc_if="sync_val_compare_and_swap"
1962 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1963 atomics_win32_if="MemoryBarrier"
1964 atomics_native_if_any="$ATOMICS_LIST"
1965 w32threads_deps="atomics_native"
1966 threads_if_any="$THREADS_LIST"
1967
1968 # subsystems
1969 cbs_h264_select="cbs golomb"
1970 cbs_h265_select="cbs golomb"
1971 cbs_mpeg2_select="cbs"
1972 dct_select="rdft"
1973 dirac_parse_select="golomb"
1974 error_resilience_select="me_cmp"
1975 faandct_deps="faan"
1976 faandct_select="fdctdsp"
1977 faanidct_deps="faan"
1978 faanidct_select="idctdsp"
1979 h264dsp_select="startcode"
1980 hevcparse_select="golomb"
1981 intrax8_select="blockdsp idctdsp"
1982 mdct_select="fft"
1983 rdft_select="fft"
1984 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1985 mpeg_er_select="error_resilience"
1986 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1987 mpegaudiodsp_select="dct"
1988 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1989 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1990 vc1dsp_select="h264chroma qpeldsp startcode"
1991
1992 # decoders / encoders
1993 aac_decoder_select="adts_header imdct15 mdct sinewin"
1994 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1995 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1996 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1997 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1998 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1999 adpcm_g722_decoder_select="g722dsp"
2000 adpcm_g722_encoder_select="g722dsp"
2001 aic_decoder_select="golomb idctdsp"
2002 alac_encoder_select="lpc"
2003 als_decoder_select="bswapdsp"
2004 amrnb_decoder_select="lsp"
2005 amrwb_decoder_select="lsp"
2006 amv_decoder_select="sp5x_decoder"
2007 ape_decoder_select="bswapdsp"
2008 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2009 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2010 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2011 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2012 atrac1_decoder_select="mdct sinewin"
2013 atrac3_decoder_select="mdct"
2014 atrac3p_decoder_select="mdct sinewin"
2015 bink_decoder_select="blockdsp hpeldsp"
2016 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2017 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2018 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2019 clearvideo_decoder_select="idctdsp"
2020 cllc_decoder_select="bswapdsp"
2021 comfortnoise_encoder_select="lpc"
2022 cook_decoder_select="audiodsp mdct sinewin"
2023 cscd_decoder_select="lzo"
2024 cscd_decoder_suggest="zlib"
2025 dca_decoder_select="fmtconvert mdct"
2026 dds_decoder_select="texturedsp"
2027 dnxhd_decoder_select="blockdsp idctdsp"
2028 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2029 dvvideo_decoder_select="dvprofile idctdsp"
2030 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2031 dxa_decoder_deps="zlib"
2032 dxv_decoder_select="lzf texturedsp"
2033 eac3_decoder_select="ac3_decoder"
2034 eac3_encoder_select="ac3_encoder"
2035 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2036 eatgq_decoder_select="aandcttables idctdsp"
2037 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2038 exr_decoder_deps="zlib"
2039 ffv1_decoder_select="rangecoder"
2040 ffv1_encoder_select="rangecoder"
2041 ffvhuff_decoder_select="huffyuv_decoder"
2042 ffvhuff_encoder_select="huffyuv_encoder"
2043 fic_decoder_select="golomb"
2044 flac_decoder_select="flacdsp"
2045 flac_encoder_select="bswapdsp flacdsp lpc"
2046 flashsv_decoder_deps="zlib"
2047 flashsv_encoder_deps="zlib"
2048 flashsv2_decoder_deps="zlib"
2049 flv_decoder_select="h263_decoder"
2050 flv_encoder_select="h263_encoder"
2051 fourxm_decoder_select="blockdsp bswapdsp"
2052 fraps_decoder_select="bswapdsp huffman"
2053 g2m_decoder_deps="zlib"
2054 g2m_decoder_select="blockdsp idctdsp jpegtables"
2055 h261_decoder_select="mpeg_er mpegvideo"
2056 h261_encoder_select="aandcttables mpegvideoenc"
2057 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2058 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2059 h263i_decoder_select="h263_decoder"
2060 h263p_encoder_select="h263_encoder"
2061 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2062 h264_decoder_suggest="error_resilience"
2063 hap_decoder_select="snappy texturedsp"
2064 hap_encoder_deps="libsnappy"
2065 hap_encoder_select="texturedspenc"
2066 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2067 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2068 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2069 iac_decoder_select="imc_decoder"
2070 imc_decoder_select="bswapdsp fft mdct sinewin"
2071 indeo3_decoder_select="hpeldsp"
2072 indeo4_decoder_select="ividsp"
2073 indeo5_decoder_select="ividsp"
2074 interplay_video_decoder_select="hpeldsp"
2075 jpegls_decoder_select="mjpeg_decoder"
2076 jv_decoder_select="blockdsp"
2077 lagarith_decoder_select="huffyuvdsp"
2078 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2079 magicyuv_decoder_select="huffyuvdsp"
2080 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2081 metasound_decoder_select="lsp mdct sinewin"
2082 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2083 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2084 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2085 mjpegb_decoder_select="mjpeg_decoder"
2086 mlp_decoder_select="mlp_parser"
2087 motionpixels_decoder_select="bswapdsp"
2088 mp1_decoder_select="mpegaudio"
2089 mp1float_decoder_select="mpegaudio"
2090 mp2_decoder_select="mpegaudio"
2091 mp2float_decoder_select="mpegaudio"
2092 mp3_decoder_select="mpegaudio"
2093 mp3adu_decoder_select="mpegaudio"
2094 mp3adufloat_decoder_select="mpegaudio"
2095 mp3float_decoder_select="mpegaudio"
2096 mp3on4_decoder_select="mpegaudio"
2097 mp3on4float_decoder_select="mpegaudio"
2098 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2099 mpc8_decoder_select="mpegaudiodsp"
2100 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2101 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2102 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2103 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2104 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2105 mpeg4_encoder_select="h263_encoder"
2106 msa1_decoder_select="mss34dsp"
2107 msmpeg4v1_decoder_select="h263_decoder"
2108 msmpeg4v2_decoder_select="h263_decoder"
2109 msmpeg4v2_encoder_select="h263_encoder"
2110 msmpeg4v3_decoder_select="h263_decoder"
2111 msmpeg4v3_encoder_select="h263_encoder"
2112 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2113 mts2_decoder_select="mss34dsp"
2114 mxpeg_decoder_select="mjpeg_decoder"
2115 nellymoser_decoder_select="mdct sinewin"
2116 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2117 nuv_decoder_select="idctdsp lzo"
2118 on2avc_decoder_select="mdct"
2119 opus_decoder_deps="avresample"
2120 opus_decoder_select="imdct15"
2121 png_decoder_deps="zlib"
2122 png_encoder_deps="zlib"
2123 png_encoder_select="huffyuvencdsp"
2124 prores_decoder_select="idctdsp"
2125 prores_encoder_select="fdctdsp"
2126 qcelp_decoder_select="lsp"
2127 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2128 ra_144_encoder_select="audio_frame_queue lpc"
2129 ralf_decoder_select="golomb"
2130 rscc_decoder_deps="zlib"
2131 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2132 rv10_encoder_select="h263_encoder"
2133 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2134 rv20_encoder_select="h263_encoder"
2135 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2136 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2137 screenpresso_decoder_deps="zlib"
2138 sipr_decoder_select="lsp"
2139 sp5x_decoder_select="mjpeg_decoder"
2140 svq1_decoder_select="hpeldsp"
2141 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2142 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2143 svq3_decoder_suggest="zlib"
2144 tak_decoder_select="audiodsp"
2145 tdsc_decoder_deps="zlib"
2146 tdsc_decoder_select="mjpeg_decoder"
2147 theora_decoder_select="vp3_decoder"
2148 thp_decoder_select="mjpeg_decoder"
2149 tiff_decoder_suggest="zlib"
2150 tiff_encoder_suggest="zlib"
2151 truehd_decoder_select="mlp_decoder"
2152 truemotion2_decoder_select="bswapdsp"
2153 truespeech_decoder_select="bswapdsp"
2154 tscc_decoder_deps="zlib"
2155 txd_decoder_select="texturedsp"
2156 twinvq_decoder_select="mdct lsp sinewin"
2157 utvideo_decoder_select="bswapdsp huffyuvdsp"
2158 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2159 vble_decoder_select="huffyuvdsp"
2160 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2161 vc1image_decoder_select="vc1_decoder"
2162 vorbis_decoder_select="mdct"
2163 vorbis_encoder_select="mdct"
2164 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2165 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2166 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2167 vp6a_decoder_select="vp6_decoder"
2168 vp6f_decoder_select="vp6_decoder"
2169 vp7_decoder_select="h264pred videodsp vp8dsp"
2170 vp8_decoder_select="h264pred videodsp vp8dsp"
2171 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2172 webp_decoder_select="vp8_decoder"
2173 wmapro_decoder_select="mdct sinewin wma_freqs"
2174 wmav1_decoder_select="mdct sinewin wma_freqs"
2175 wmav1_encoder_select="mdct sinewin wma_freqs"
2176 wmav2_decoder_select="mdct sinewin wma_freqs"
2177 wmav2_encoder_select="mdct sinewin wma_freqs"
2178 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2179 wmv1_decoder_select="h263_decoder"
2180 wmv1_encoder_select="h263_encoder"
2181 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2182 wmv2_encoder_select="h263_encoder wmv2dsp"
2183 wmv3_decoder_select="vc1_decoder"
2184 wmv3image_decoder_select="wmv3_decoder"
2185 zerocodec_decoder_deps="zlib"
2186 zlib_decoder_deps="zlib"
2187 zlib_encoder_deps="zlib"
2188 zmbv_decoder_deps="zlib"
2189 zmbv_encoder_deps="zlib"
2190
2191 # hardware accelerators
2192 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2193 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2194 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2195 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2196
2197 h263_vaapi_hwaccel_deps="vaapi"
2198 h263_vaapi_hwaccel_select="h263_decoder"
2199 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2200 h264_cuvid_hwaccel_select="h264_decoder"
2201 h264_d3d11va_hwaccel_deps="d3d11va"
2202 h264_d3d11va_hwaccel_select="h264_decoder"
2203 h264_d3d11va2_hwaccel_deps="d3d11va"
2204 h264_d3d11va2_hwaccel_select="h264_decoder"
2205 h264_dxva2_hwaccel_deps="dxva2"
2206 h264_dxva2_hwaccel_select="h264_decoder"
2207 h264_mmal_hwaccel_deps="mmal"
2208 h264_qsv_hwaccel_deps="libmfx"
2209 h264_vaapi_hwaccel_deps="vaapi"
2210 h264_vaapi_hwaccel_select="h264_decoder"
2211 h264_vda_hwaccel_deps="vda"
2212 h264_vda_hwaccel_select="h264_decoder"
2213 h264_vda_old_hwaccel_deps="vda"
2214 h264_vda_old_hwaccel_select="h264_decoder"
2215 h264_vdpau_hwaccel_deps="vdpau"
2216 h264_vdpau_hwaccel_select="h264_decoder"
2217 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2218 hevc_cuvid_hwaccel_select="hevc_decoder"
2219 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2220 hevc_d3d11va_hwaccel_select="hevc_decoder"
2221 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2222 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2223 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2224 hevc_dxva2_hwaccel_select="hevc_decoder"
2225 hevc_qsv_hwaccel_deps="libmfx"
2226 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2227 hevc_vaapi_hwaccel_select="hevc_decoder"
2228 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2229 hevc_vdpau_hwaccel_select="hevc_decoder"
2230 mpeg1_vdpau_hwaccel_deps="vdpau"
2231 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2232 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2233 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2234 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2235 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2236 mpeg2_dxva2_hwaccel_deps="dxva2"
2237 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2238 mpeg2_mmal_hwaccel_deps="mmal"
2239 mpeg2_qsv_hwaccel_deps="libmfx"
2240 mpeg2_vaapi_hwaccel_deps="vaapi"
2241 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2242 mpeg2_vdpau_hwaccel_deps="vdpau"
2243 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2244 mpeg4_vaapi_hwaccel_deps="vaapi"
2245 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2246 mpeg4_vdpau_hwaccel_deps="vdpau"
2247 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2248 vc1_d3d11va_hwaccel_deps="d3d11va"
2249 vc1_d3d11va_hwaccel_select="vc1_decoder"
2250 vc1_d3d11va2_hwaccel_deps="d3d11va"
2251 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2252 vc1_dxva2_hwaccel_deps="dxva2"
2253 vc1_dxva2_hwaccel_select="vc1_decoder"
2254 vc1_mmal_hwaccel_deps="mmal"
2255 vc1_qsv_hwaccel_deps="libmfx"
2256 vc1_vaapi_hwaccel_deps="vaapi"
2257 vc1_vaapi_hwaccel_select="vc1_decoder"
2258 vc1_vdpau_hwaccel_deps="vdpau"
2259 vc1_vdpau_hwaccel_select="vc1_decoder"
2260 vp8_qsv_hwaccel_deps="libmfx"
2261 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2262 vp8_vaapi_hwaccel_select="vp8_decoder"
2263 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2264 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2265 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2266 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2267 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2268
2269 # hardware-accelerated codecs
2270 nvenc_deps_any="libdl LoadLibrary"
2271 omx_deps="libdl pthreads"
2272 omx_rpi_select="omx"
2273 qsv_deps="libmfx"
2274 qsvdec_select="qsv"
2275 qsvenc_select="qsv"
2276 qsvvpp_select="qsv"
2277 vaapi_encode_deps="vaapi"
2278
2279 hwupload_cuda_filter_deps="cuda"
2280 scale_npp_filter_deps="cuda libnpp"
2281
2282 h264_mmal_decoder_deps="mmal"
2283 h264_nvenc_encoder_deps="nvenc"
2284 h264_omx_encoder_deps="omx"
2285 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2286 h264_qsv_encoder_select="qsvenc"
2287 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2288 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2289 hevc_nvenc_encoder_deps="nvenc"
2290 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2291 hevc_qsv_encoder_select="hevcparse qsvenc"
2292 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2293 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2294 mjpeg_qsv_encoder_deps="libmfx"
2295 mjpeg_qsv_encoder_select="qsvenc"
2296 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2297 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2298 mpeg2_mmal_decoder_deps="mmal"
2299 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2300 mpeg2_qsv_encoder_select="qsvenc"
2301 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2302 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2303 mpeg4_omx_encoder_deps="omx"
2304 vc1_mmal_decoder_deps="mmal"
2305 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2306 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2307 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2308 vp8_vaapi_encoder_select="vaapi_encode"
2309 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2310 vp9_vaapi_encoder_select="vaapi_encode"
2311
2312 nvenc_h264_encoder_select="h264_nvenc_encoder"
2313 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2314
2315 # parsers
2316 aac_parser_select="adts_header"
2317 h264_parser_select="golomb h264dsp h264parse"
2318 hevc_parser_select="hevcparse"
2319 mpegaudio_parser_select="mpegaudioheader"
2320 mpegvideo_parser_select="mpegvideo"
2321 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2322 vc1_parser_select="vc1dsp"
2323
2324 # bitstream_filters
2325 aac_adtstoasc_bsf_select="adts_header"
2326 h264_metadata_bsf_select="cbs_h264"
2327 h264_redundant_pps_bsf_select="cbs_h264"
2328 hevc_metadata_bsf_select="cbs_h265"
2329 mjpeg2jpeg_bsf_select="jpegtables"
2330 mpeg2_metadata_bsf_select="cbs_mpeg2"
2331 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2332
2333 # external libraries
2334 avisynth_deps="LoadLibrary"
2335 avxsynth_deps="libdl"
2336 avisynth_demuxer_deps_any="avisynth avxsynth"
2337 avisynth_demuxer_select="riffdec"
2338 libdcadec_decoder_deps="libdcadec"
2339 libfaac_encoder_deps="libfaac"
2340 libfaac_encoder_select="audio_frame_queue"
2341 libfdk_aac_decoder_deps="libfdk_aac"
2342 libfdk_aac_encoder_deps="libfdk_aac"
2343 libfdk_aac_encoder_select="audio_frame_queue"
2344 libgsm_decoder_deps="libgsm"
2345 libgsm_encoder_deps="libgsm"
2346 libgsm_ms_decoder_deps="libgsm"
2347 libgsm_ms_encoder_deps="libgsm"
2348 libilbc_decoder_deps="libilbc"
2349 libilbc_encoder_deps="libilbc"
2350 libkvazaar_encoder_deps="libkvazaar"
2351 libmp3lame_encoder_deps="libmp3lame"
2352 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2353 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2354 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2355 libopencore_amrnb_encoder_select="audio_frame_queue"
2356 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2357 libopenh264_decoder_deps="libopenh264"
2358 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2359 libopenh264_encoder_deps="libopenh264"
2360 libopenjpeg_decoder_deps="libopenjpeg"
2361 libopenjpeg_encoder_deps="libopenjpeg"
2362 libopus_decoder_deps="libopus"
2363 libopus_encoder_deps="libopus"
2364 libopus_encoder_select="audio_frame_queue"
2365 libschroedinger_decoder_deps="libschroedinger"
2366 libschroedinger_encoder_deps="libschroedinger"
2367 libspeex_decoder_deps="libspeex"
2368 libspeex_encoder_deps="libspeex"
2369 libspeex_encoder_select="audio_frame_queue"
2370 libtheora_encoder_deps="libtheora"
2371 libtwolame_encoder_deps="libtwolame"
2372 libvo_aacenc_encoder_deps="libvo_aacenc"
2373 libvo_aacenc_encoder_select="audio_frame_queue"
2374 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2375 libvorbis_encoder_deps="libvorbis"
2376 libvorbis_encoder_select="audio_frame_queue"
2377 libvpx_vp8_decoder_deps="libvpx"
2378 libvpx_vp8_encoder_deps="libvpx"
2379 libvpx_vp9_decoder_deps="libvpx"
2380 libvpx_vp9_encoder_deps="libvpx"
2381 libwavpack_encoder_deps="libwavpack"
2382 libwavpack_encoder_select="audio_frame_queue"
2383 libwebp_encoder_deps="libwebp"
2384 libx262_encoder_deps="libx262"
2385 libx264_encoder_deps="libx264"
2386 libx265_encoder_deps="libx265"
2387 libxavs_encoder_deps="libxavs"
2388 libxvid_encoder_deps="libxvid mkstemp"
2389
2390 # demuxers / muxers
2391 ac3_demuxer_select="ac3_parser"
2392 asf_demuxer_select="riffdec"
2393 asf_muxer_select="riffenc"
2394 asf_stream_muxer_select="asf_muxer"
2395 avi_demuxer_select="iso_media riffdec"
2396 avi_muxer_select="riffenc"
2397 caf_demuxer_select="iso_media riffdec"
2398 dash_muxer_select="mp4_muxer"
2399 dirac_demuxer_select="dirac_parser"
2400 dv_demuxer_select="dvprofile"
2401 dv_muxer_select="dvprofile"
2402 dxa_demuxer_select="riffdec"
2403 eac3_demuxer_select="ac3_parser"
2404 f4v_muxer_select="mov_muxer"
2405 flac_demuxer_select="flac_parser"
2406 hds_muxer_select="flv_muxer"
2407 hls_muxer_select="mpegts_muxer"
2408 ipod_muxer_select="mov_muxer"
2409 ismv_muxer_select="mov_muxer"
2410 matroska_audio_muxer_select="matroska_muxer"
2411 matroska_demuxer_select="iso_media riffdec"
2412 matroska_demuxer_suggest="bzlib lzo zlib"
2413 matroska_muxer_select="iso_media riffenc"
2414 mmf_muxer_select="riffenc"
2415 mov_demuxer_select="iso_media riffdec"
2416 mov_demuxer_suggest="zlib"
2417 mov_muxer_select="iso_media riffenc rtpenc_chain"
2418 mp3_demuxer_select="mpegaudio_parser"
2419 mp3_muxer_select="mpegaudioheader"
2420 mp4_muxer_select="mov_muxer"
2421 mpegts_demuxer_select="iso_media"
2422 mpegts_muxer_select="adts_muxer latm_muxer"
2423 mpegtsraw_demuxer_select="mpegts_demuxer"
2424 mxf_d10_muxer_select="mxf_muxer"
2425 nut_muxer_select="riffenc"
2426 nuv_demuxer_select="riffdec"
2427 oga_muxer_select="ogg_muxer"
2428 ogg_demuxer_select="dirac_parse"
2429 opus_muxer_select="ogg_muxer"
2430 psp_muxer_select="mov_muxer"
2431 rtp_demuxer_select="sdp_demuxer"
2432 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2433 rtsp_demuxer_select="http_protocol rtpdec"
2434 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2435 sap_demuxer_select="sdp_demuxer"
2436 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2437 sdp_demuxer_select="rtpdec"
2438 smoothstreaming_muxer_select="ismv_muxer"
2439 spdif_demuxer_select="adts_header"
2440 spdif_muxer_select="adts_header"
2441 spx_muxer_select="ogg_muxer"
2442 swf_demuxer_suggest="zlib"
2443 tak_demuxer_select="tak_parser"
2444 tg2_muxer_select="mov_muxer"
2445 tgp_muxer_select="mov_muxer"
2446 w64_demuxer_select="wav_demuxer"
2447 wav_demuxer_select="riffdec"
2448 wav_muxer_select="riffenc"
2449 webm_muxer_select="iso_media riffenc"
2450 wtv_demuxer_select="mpegts_demuxer riffdec"
2451 xmv_demuxer_select="riffdec"
2452 xwma_demuxer_select="riffdec"
2453
2454 # indevs / outdevs
2455 alsa_indev_deps="alsa"
2456 alsa_outdev_deps="alsa"
2457 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2458 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2459 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2460 dv1394_indev_deps="dv1394"
2461 dv1394_indev_select="dv_demuxer"
2462 fbdev_indev_deps="linux_fb_h"
2463 jack_indev_deps="libjack"
2464 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2465 libcdio_indev_deps="libcdio"
2466 libdc1394_indev_deps="libdc1394"
2467 oss_indev_deps_any="sys_soundcard_h"
2468 oss_outdev_deps_any="sys_soundcard_h"
2469 pulse_indev_deps="libpulse"
2470 sndio_indev_deps="sndio"
2471 sndio_outdev_deps="sndio"
2472 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2473 vfwcap_indev_deps="vfw32 vfwcap_defines"
2474 xcbgrab_indev_deps="libxcb libxcb_shape"
2475 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2476
2477 # protocols
2478 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2479 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2480 ffrtmpcrypt_protocol_select="tcp_protocol"
2481 ffrtmphttp_protocol_conflict="librtmp_protocol"
2482 ffrtmphttp_protocol_select="http_protocol"
2483 gopher_protocol_select="network"
2484 http_protocol_select="tcp_protocol"
2485 http_protocol_suggest="zlib"
2486 httpproxy_protocol_select="tcp_protocol"
2487 httpproxy_protocol_suggest="zlib"
2488 https_protocol_select="tls_protocol"
2489 https_protocol_suggest="zlib"
2490 icecast_protocol_select="http_protocol"
2491 librtmp_protocol_deps="librtmp"
2492 librtmpe_protocol_deps="librtmp"
2493 librtmps_protocol_deps="librtmp"
2494 librtmpt_protocol_deps="librtmp"
2495 librtmpte_protocol_deps="librtmp"
2496 mmsh_protocol_select="http_protocol"
2497 mmst_protocol_select="network"
2498 rtmp_protocol_conflict="librtmp_protocol"
2499 rtmp_protocol_select="tcp_protocol"
2500 rtmp_protocol_suggest="zlib"
2501 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2502 rtmpe_protocol_suggest="zlib"
2503 rtmps_protocol_conflict="librtmp_protocol"
2504 rtmps_protocol_select="tls_protocol"
2505 rtmps_protocol_suggest="zlib"
2506 rtmpt_protocol_select="ffrtmphttp_protocol"
2507 rtmpt_protocol_suggest="zlib"
2508 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2509 rtmpte_protocol_suggest="zlib"
2510 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2511 rtmpts_protocol_suggest="zlib"
2512 rtp_protocol_select="udp_protocol"
2513 sctp_protocol_deps="struct_sctp_event_subscribe"
2514 sctp_protocol_select="network"
2515 srtp_protocol_select="rtp_protocol srtp"
2516 tcp_protocol_select="network"
2517 tls_protocol_deps_any="gnutls openssl"
2518 tls_protocol_select="tcp_protocol"
2519 udp_protocol_select="network"
2520 unix_protocol_deps="sys_un_h"
2521 unix_protocol_select="network"
2522
2523 # filters
2524 asyncts_filter_deps="avresample"
2525 blackframe_filter_deps="gpl"
2526 boxblur_filter_deps="gpl"
2527 bs2b_filter_deps="libbs2b"
2528 cropdetect_filter_deps="gpl"
2529 deinterlace_qsv_filter_deps="libmfx"
2530 deinterlace_vaapi_filter_deps="vaapi"
2531 delogo_filter_deps="gpl"
2532 drawtext_filter_deps="libfreetype"
2533 drawtext_filter_suggest="libfontconfig"
2534 frei0r_filter_deps="frei0r libdl"
2535 frei0r_src_filter_deps="frei0r libdl"
2536 hdcd_filter_deps="libhdcd"
2537 hqdn3d_filter_deps="gpl"
2538 interlace_filter_deps="gpl"
2539 movie_filter_deps="avcodec avformat"
2540 ocv_filter_deps="libopencv"
2541 overlay_qsv_filter_deps="libmfx"
2542 overlay_qsv_filter_select="qsvvpp"
2543 resample_filter_deps="avresample"
2544 scale_filter_deps="swscale"
2545 scale_qsv_filter_deps="libmfx"
2546 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2547 vpp_qsv_filter_deps="libmfx"
2548 vpp_qsv_filter_select="qsvvpp"
2549
2550 # examples
2551 decode_audio_example_deps="avcodec avutil"
2552 decode_video_example_deps="avcodec avutil"
2553 encode_audio_example_deps="avcodec avutil"
2554 encode_video_example_deps="avcodec avutil"
2555 filter_audio_example_deps="avfilter avutil"
2556 metadata_example_deps="avformat avutil"
2557 output_example_deps="avcodec avformat avresample avutil swscale"
2558 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2559 transcode_aac_example_deps="avcodec avformat avresample"
2560
2561 # EXTRALIBS_LIST
2562 cpu_init_extralibs="pthreads_extralibs"
2563 cws2fws_extralibs="zlib_extralibs"
2564
2565 # libraries, in linking order
2566 avcodec_deps="avutil"
2567 avcodec_select="null_bsf"
2568 avdevice_deps="avformat avcodec avutil"
2569 avfilter_deps="avutil"
2570 avformat_deps="avcodec avutil"
2571 avformat_suggest="network"
2572 avresample_deps="avutil"
2573 swscale_deps="avutil"
2574
2575 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2576 avdevice_extralibs="libm_extralibs"
2577 avformat_extralibs="libm_extralibs"
2578 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2579 avresample_extralibs="libm_extralibs"
2580 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2581 swscale_extralibs="libm_extralibs"
2582
2583 # programs
2584 avconv_deps="avcodec avfilter avformat avresample swscale"
2585 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2586                fps_filter null_filter resample_filter scale_filter
2587                trim_filter"
2588 avconv_suggest="psapi shell32"
2589 avplay_deps="avcodec avfilter avformat avresample sdl"
2590 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2591 avplay_suggest="shell32"
2592 avprobe_deps="avcodec avformat"
2593 avprobe_suggest="shell32"
2594
2595 # documentation
2596 pod2man_deps="doc"
2597 texi2html_deps="doc"
2598
2599 # default parameters
2600
2601 logfile="avbuild/config.log"
2602
2603 # installation paths
2604 prefix_default="/usr/local"
2605 bindir_default='${prefix}/bin'
2606 datadir_default='${prefix}/share/avconv'
2607 docdir_default='${prefix}/share/doc/libav'
2608 incdir_default='${prefix}/include'
2609 libdir_default='${prefix}/lib'
2610 mandir_default='${prefix}/share/man'
2611 shlibdir_default="$libdir_default"
2612
2613 # toolchain
2614 ar_default="ar"
2615 cc_default="gcc"
2616 host_cc_default="gcc"
2617 x86asmexe_default="nasm"
2618 ln_s="ln -s -f"
2619 nm_default="nm -g"
2620 pkg_config_default=pkg-config
2621 ranlib="ranlib"
2622 strip="strip"
2623 version_script='--version-script'
2624
2625 # machine
2626 arch_default=$(uname -m)
2627 cpu="generic"
2628 intrinsics="none"
2629
2630 # OS
2631 target_os_default=$(tolower $(uname -s))
2632 host_os=$target_os_default
2633
2634 # configurable options
2635 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2636
2637 enable asm
2638 enable debug
2639 enable doc
2640 enable faan faandct faanidct
2641 enable optimizations
2642 enable safe_bitstream_reader
2643 enable static
2644 enable swscale_alpha
2645 enable valgrind_backtrace
2646
2647 # By default, enable only those hwaccels that have no external dependencies.
2648 enable d3d11va dxva2 vda vdpau
2649
2650 # internal components are enabled by default
2651 enable $EXTRALIBS_LIST
2652
2653 # Avoid external, non-system, libraries getting enabled by dependency resolution
2654 disable $EXTERNAL_LIBRARY_LIST
2655
2656 # build settings
2657 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2658 LIBPREF="lib"
2659 LIBSUF=".a"
2660 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2661 SLIBPREF="lib"
2662 SLIBSUF=".so"
2663 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2664 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2665 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2666 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2667 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2668 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2669 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2670
2671 asflags_filter=echo
2672 cflags_filter=echo
2673 ldflags_filter=echo
2674
2675 AS_C='-c'
2676 AS_O='-o $@'
2677 CC_C='-c'
2678 CC_E='-E -o $@'
2679 CC_O='-o $@'
2680 OBJCC_C='-c'
2681 OBJCC_E='-E -o $@'
2682 OBJCC_O='-o $@'
2683 X86ASM_O='-o $@'
2684 LD_O='-o $@'
2685 LD_LIB='-l%'
2686 LD_PATH='-L'
2687 HOSTCC_C='-c'
2688 HOSTCC_E='-E -o $@'
2689 HOSTCC_O='-o $@'
2690 HOSTLD_O='-o $@'
2691
2692 host_extralibs='-lm'
2693 host_cflags_filter=echo
2694 host_ldflags_filter=echo
2695
2696 target_path='$(CURDIR)'
2697
2698 # since the object filename is not given with the -MM flag, the compiler
2699 # is only able to print the basename, and we must add the path ourselves
2700 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2701 DEPFLAGS='-MM'
2702
2703 mkdir -p avbuild
2704
2705 # find source path
2706 if test -f configure; then
2707     source_path=.
2708 else
2709     source_path=$(cd $(dirname "$0"); pwd)
2710     echo "$source_path" | grep -q '[[:blank:]]' &&
2711         die "Out of tree builds are impossible with whitespace in source path."
2712     test -e "$source_path/config.h" &&
2713         die "Out of tree builds are impossible with config.h in source dir."
2714 fi
2715
2716 for v in "$@"; do
2717     r=${v#*=}
2718     l=${v%"$r"}
2719     r=$(sh_quote "$r")
2720     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2721 done
2722
2723 find_things(){
2724     thing=$1
2725     pattern=$2
2726     file=$source_path/$3
2727     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2728 }
2729
2730 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2731 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2732 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2733 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2734 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2735 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2736 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2737 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2738 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2739
2740 find_things_extern(){
2741     thing=$1
2742     pattern=$2
2743     file=$source_path/$3
2744     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2745 }
2746
2747 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2748 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2749
2750 AVCODEC_COMPONENTS_LIST="
2751     $BSF_LIST
2752     $DECODER_LIST
2753     $ENCODER_LIST
2754     $HWACCEL_LIST
2755     $PARSER_LIST
2756 "
2757
2758 AVDEVICE_COMPONENTS_LIST="
2759     $INDEV_LIST
2760     $OUTDEV_LIST
2761 "
2762
2763 AVFILTER_COMPONENTS_LIST="
2764     $FILTER_LIST
2765 "
2766
2767 AVFORMAT_COMPONENTS_LIST="
2768     $DEMUXER_LIST
2769     $MUXER_LIST
2770     $PROTOCOL_LIST
2771 "
2772
2773 ALL_COMPONENTS="
2774     $AVCODEC_COMPONENTS_LIST
2775     $AVDEVICE_COMPONENTS_LIST
2776     $AVFILTER_COMPONENTS_LIST
2777     $AVFORMAT_COMPONENTS_LIST
2778 "
2779
2780 for n in $COMPONENT_LIST; do
2781     v=$(toupper ${n%s})_LIST
2782     eval enable \$$v
2783     eval ${n}_if_any="\$$v"
2784 done
2785
2786 enable $ARCH_EXT_LIST
2787
2788 die_unknown(){
2789     echo "Unknown option \"$1\"."
2790     echo "See $0 --help for available options."
2791     exit 1
2792 }
2793
2794 print_3_columns() {
2795     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2796 }
2797
2798 show_list() {
2799     suffix=_$1
2800     shift
2801     echo $* | sed s/$suffix//g | print_3_columns
2802     exit 0
2803 }
2804
2805 rand_list(){
2806     IFS=', '
2807     set -- $*
2808     unset IFS
2809     for thing; do
2810         comp=${thing%:*}
2811         prob=${thing#$comp}
2812         prob=${prob#:}
2813         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2814         echo "prob ${prob:-0.5}"
2815         printf '%s\n' $comp
2816     done
2817 }
2818
2819 do_random(){
2820     action=$1
2821     shift
2822     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2823     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2824 }
2825
2826 for opt do
2827     optval="${opt#*=}"
2828     case "$opt" in
2829         --extra-ldflags=*)
2830             add_ldflags $optval
2831         ;;
2832         --extra-ldexeflags=*)
2833             add_ldexeflags $optval
2834         ;;
2835         --extra-ldsoflags=*)
2836             add_ldsoflags $optval
2837         ;;
2838         --extra-libs=*)
2839             add_extralibs $optval
2840         ;;
2841         --disable-devices)
2842             disable $INDEV_LIST $OUTDEV_LIST
2843         ;;
2844         --enable-debug=*)
2845             debuglevel="$optval"
2846         ;;
2847         --disable-programs)
2848             disable $PROGRAM_LIST
2849         ;;
2850         --disable-everything)
2851             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2852         ;;
2853         --disable-all)
2854             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2855             disable $LIBRARY_LIST $PROGRAM_LIST doc
2856         ;;
2857         --enable-random|--disable-random)
2858             action=${opt%%-random}
2859             do_random ${action#--} $COMPONENT_LIST
2860         ;;
2861         --enable-random=*|--disable-random=*)
2862             action=${opt%%-random=*}
2863             do_random ${action#--} $optval
2864         ;;
2865         --enable-*=*|--disable-*=*)
2866             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2867             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2868             eval list=\$$(toupper $thing)_LIST
2869             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2870             $action $(filter "$name" $list)
2871         ;;
2872         --enable-avserver|--disable-avserver*)
2873             warn "avserver has been removed, the ${opt} option is only"\
2874                  "provided for compatibility and will be removed in the future"
2875         ;;
2876         --enable-yasm|--disable-yasm)
2877             warn "The ${opt} option is only provided for compatibility and will be\n"\
2878                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2879             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2880         ;;
2881         --enable-?*|--disable-?*)
2882             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2883             if is_in $option $COMPONENT_LIST; then
2884                 test $action = disable && action=unset
2885                 eval $action \$$(toupper ${option%s})_LIST
2886             elif is_in $option $CMDLINE_SELECT; then
2887                 $action $option
2888             else
2889                 die_unknown $opt
2890             fi
2891         ;;
2892         --list-*)
2893             NAME="${opt#--list-}"
2894             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2895             NAME=${NAME%s}
2896             eval show_list $NAME \$$(toupper $NAME)_LIST
2897         ;;
2898         --help|-h) show_help
2899         ;;
2900         --quiet|-q) quiet=yes
2901         ;;
2902         *)
2903             optname="${opt%%=*}"
2904             optname="${optname#--}"
2905             optname=$(echo "$optname" | sed 's/-/_/g')
2906             if is_in $optname $CMDLINE_SET; then
2907                 eval $optname='$optval'
2908             elif is_in $optname $CMDLINE_APPEND; then
2909                 append $optname "$optval"
2910             else
2911                 die_unknown $opt
2912             fi
2913         ;;
2914     esac
2915 done
2916
2917 for e in $env; do
2918     eval "export $e"
2919 done
2920
2921 disabled logging && logfile=/dev/null
2922
2923 # Die early if licensing-related configure options are incompatible.
2924 die_license_disabled() {
2925     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2926 }
2927
2928 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2929 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2930 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2931
2932 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2933
2934 enabled_all gnutls openssl &&
2935     die "GnuTLS and OpenSSL must not be enabled at the same time."
2936
2937 # Disable all the library-specific components if the library itself
2938 # is disabled, see AVCODEC_LIST and following _LIST variables.
2939
2940 disable_components(){
2941     disabled ${1} && disable $(
2942         eval components="\$$(toupper ${1})_COMPONENTS"
2943         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2944     )
2945 }
2946
2947 map 'disable_components $v' $LIBRARY_LIST
2948
2949 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2950 set >> $logfile
2951
2952 case "$toolchain" in
2953     *-asan)
2954         cc_default="${toolchain%-asan}"
2955         add_cflags  -fsanitize=address
2956         add_ldflags -fsanitize=address
2957     ;;
2958     *-msan)
2959         cc_default="${toolchain%-msan}"
2960         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2961         add_ldflags -fsanitize=memory
2962     ;;
2963     *-tsan)
2964         cc_default="${toolchain%-tsan}"
2965         add_cflags  -fsanitize=thread -fPIE
2966         add_ldflags -fsanitize=thread -pie
2967         case "$toolchain" in
2968             gcc-tsan)
2969                 add_cflags  -fPIC
2970                 add_ldflags -fPIC
2971                 ;;
2972         esac
2973     ;;
2974     *-usan)
2975         cc_default="${toolchain%-usan}"
2976         add_cflags  -fsanitize=undefined
2977         add_ldflags -fsanitize=undefined
2978         case "$toolchain" in
2979             clang-usan)
2980                 add_cflags -O1
2981                 ;;
2982         esac
2983     ;;
2984     valgrind-*)
2985         target_exec_default="valgrind"
2986         case "$toolchain" in
2987             valgrind-massif)
2988                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2989                 ;;
2990             valgrind-memcheck)
2991                 target_exec_args="--track-origins=yes --leak-check=full"
2992                 ;;
2993         esac
2994     ;;
2995     msvc)
2996         # Check whether the current MSVC version needs the C99 converter.
2997         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2998         # support enough of C99 to build libav. Default to the new
2999         # behaviour if the regexp was unable to match anything, since this
3000         # successfully parses the version number of existing supported
3001         # versions that require the converter (MSVC 2010 and 2012).
3002         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3003         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3004             cc_default="cl"
3005         else
3006             cc_default="c99wrap cl"
3007         fi
3008         ld_default="$source_path/compat/windows/mslink"
3009         nm_default="dumpbin -symbols"
3010         ar_default="lib"
3011         case "$arch" in
3012         arm*)
3013             as_default="armasm"
3014             ;;
3015         esac
3016         target_os_default="win32"
3017         # Use a relative path for TMPDIR. This makes sure all the
3018         # ffconf temp files are written with a relative path, avoiding
3019         # issues with msys/win32 path conversion for MSVC parameters
3020         # such as -Fo<file> or -out:<file>.
3021         TMPDIR=.
3022     ;;
3023     icl)
3024         cc_default="icl"
3025         ld_default="xilink"
3026         nm_default="dumpbin -symbols"
3027         ar_default="xilib"
3028         target_os_default="win32"
3029         TMPDIR=.
3030     ;;
3031     gcov)
3032         add_cflags  -fprofile-arcs -ftest-coverage
3033         add_ldflags -fprofile-arcs -ftest-coverage
3034     ;;
3035     llvm-cov)
3036         add_cflags -fprofile-arcs -ftest-coverage
3037         add_ldflags --coverage
3038     ;;
3039     hardened)
3040         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3041         add_cflags   -fno-strict-overflow -fstack-protector-all
3042         add_ldflags  -Wl,-z,relro -Wl,-z,now
3043     ;;
3044     ?*)
3045         die "Unknown toolchain $toolchain"
3046     ;;
3047 esac
3048
3049 test -n "$cross_prefix" && enable cross_compile
3050
3051 if enabled cross_compile; then
3052     test -n "$arch" && test -n "$target_os" ||
3053         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3054 fi
3055
3056 ar_default="${cross_prefix}${ar_default}"
3057 cc_default="${cross_prefix}${cc_default}"
3058 objcc_default="${cross_prefix}${objcc_default}"
3059 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3060 nm_default="${cross_prefix}${nm_default}"
3061 pkg_config_default="${cross_prefix}${pkg_config_default}"
3062 ranlib="${cross_prefix}${ranlib}"
3063 strip="${cross_prefix}${strip}"
3064
3065 sysinclude_default="${sysroot}/usr/include"
3066
3067 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3068 enabled cross_compile || host_cc_default=$cc
3069 set_default host_cc
3070
3071 if ! $pkg_config --version >/dev/null 2>&1; then
3072     warn "$pkg_config not found, library detection may fail."
3073     pkg_config=false
3074 fi
3075
3076 exesuf() {
3077     case $1 in
3078         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3079     esac
3080 }
3081
3082 EXESUF=$(exesuf $target_os)
3083 HOSTEXESUF=$(exesuf $host_os)
3084
3085 # set temporary file name
3086 : ${TMPDIR:=$TEMPDIR}
3087 : ${TMPDIR:=$TMP}
3088 : ${TMPDIR:=/tmp}
3089
3090 if ! check_cmd mktemp -u XXXXXX; then
3091     # simple replacement for missing mktemp
3092     # NOT SAFE FOR GENERAL USE
3093     mktemp(){
3094         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3095         echo "$tmpname"
3096         mkdir "$tmpname"
3097     }
3098 fi
3099
3100 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3101     die "Unable to create temporary directory in $TMPDIR."
3102
3103 tmpfile(){
3104     tmp="${AVTMPDIR}/test"$2
3105     (set -C; exec > $tmp) 2> /dev/null ||
3106         die "Unable to create temporary file in $AVTMPDIR."
3107     eval $1=$tmp
3108 }
3109
3110 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3111 trap 'exit 2' INT
3112
3113 tmpfile TMPASM .asm
3114 tmpfile TMPC   .c
3115 tmpfile TMPE   $EXESUF
3116 tmpfile TMPH   .h
3117 tmpfile TMPO   .o
3118 tmpfile TMPS   .S
3119 tmpfile TMPSH  .sh
3120 tmpfile TMPV   .ver
3121
3122 unset -f mktemp
3123
3124 chmod +x $TMPE
3125
3126 # make sure we can execute files in $TMPDIR
3127 cat > $TMPSH 2>> $logfile <<EOF
3128 #! /bin/sh
3129 EOF
3130 chmod +x $TMPSH >> $logfile 2>&1
3131 if ! $TMPSH >> $logfile 2>&1; then
3132     cat <<EOF
3133 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3134 variable to another directory and make sure that it is not mounted noexec.
3135 EOF
3136     die "Sanity test failed."
3137 fi
3138
3139 armasm_flags(){
3140     for flag; do
3141         case $flag in
3142             # Filter out MSVC cl.exe options from cflags that shouldn't
3143             # be passed to gas-preprocessor
3144             -M[TD]*)                                            ;;
3145             *)                  echo $flag                      ;;
3146         esac
3147    done
3148 }
3149
3150 cparser_flags(){
3151     for flag; do
3152         case $flag in
3153             -Wno-switch)             echo -Wno-switch-enum ;;
3154             -Wno-format-zero-length) ;;
3155             -Wdisabled-optimization) ;;
3156             -Wno-pointer-sign)       echo -Wno-other ;;
3157             *)                       echo $flag ;;
3158         esac
3159     done
3160 }
3161
3162 msvc_common_flags(){
3163     for flag; do
3164         case $flag in
3165             # In addition to specifying certain flags under the compiler
3166             # specific filters, they must be specified here as well or else the
3167             # generic catch all at the bottom will print the original flag.
3168             -Wall)                ;;
3169             -Wextra)              ;;
3170             -std=c99)             ;;
3171             # Common flags
3172             -fomit-frame-pointer) ;;
3173             -g)                   echo -Z7 ;;
3174             -fno-math-errno)      ;;
3175             -fno-common)          ;;
3176             -fno-signed-zeros)    ;;
3177             -fPIC)                ;;
3178             -mthumb)              ;;
3179             -march=*)             ;;
3180             -lz)                  echo zlib.lib ;;
3181             -lx264)               echo libx264.lib ;;
3182             -l*)                  echo ${flag#-l}.lib ;;
3183             -L*)                  echo -libpath:${flag#-L} ;;
3184             *)                    echo $flag ;;
3185         esac
3186     done
3187 }
3188
3189 msvc_flags(){
3190     msvc_common_flags "$@"
3191     for flag; do
3192         case $flag in
3193             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3194                                        -wd4554 ;;
3195             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3196                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3197                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3198                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3199         esac
3200     done
3201 }
3202
3203 icl_flags(){
3204     msvc_common_flags "$@"
3205     for flag; do
3206         case $flag in
3207             # Despite what Intel's documentation says -Wall, which is supported
3208             # on Windows, does enable remarks so disable them here.
3209             -Wall)                echo $flag -Qdiag-disable:remark ;;
3210             -std=c99)             echo -Qstd=c99 ;;
3211         esac
3212     done
3213 }
3214
3215 pgi_flags(){
3216     for flag; do
3217         case $flag in
3218             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3219             -fomit-frame-pointer) echo -Mnoframe ;;
3220             -g)                   echo -gopt ;;
3221             *)                    echo $flag ;;
3222         esac
3223     done
3224 }
3225
3226 suncc_flags(){
3227     for flag; do
3228         case $flag in
3229             -march=*|-mcpu=*)
3230                 case "${flag#*=}" in
3231                     native)                   echo -xtarget=native       ;;
3232                     v9|niagara)               echo -xarch=sparc          ;;
3233                     ultrasparc)               echo -xarch=sparcvis       ;;
3234                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3235                     i586|pentium)             echo -xchip=pentium        ;;
3236                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3237                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3238                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3239                     pentium4*)          echo -xtarget=pentium4           ;;
3240                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3241                     *-sse3)             echo -xarch=sse3                 ;;
3242                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3243                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3244                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3245                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3246                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3247                     k8|opteron|athlon64|athlon-fx)
3248                                                echo -xarch=sse2a         ;;
3249                     athlon*)                   echo -xarch=pentium_proa  ;;
3250                 esac
3251                 ;;
3252             -std=c99)             echo -xc99              ;;
3253             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3254             -fPIC)                echo -KPIC -xcode=pic32 ;;
3255             -W*,*)                echo $flag              ;;
3256             -f*-*|-W*|-mimpure-text)                      ;;
3257             -shared)              echo -G                 ;;
3258             *)                    echo $flag              ;;
3259         esac
3260     done
3261 }
3262
3263 tms470_flags(){
3264     for flag; do
3265         case $flag in
3266             -march=*|-mcpu=*)
3267                 case "${flag#*=}" in
3268                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3269                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3270                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3271                     armv6*|arm11*)          echo -mv=6   ;;
3272                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3273                                             echo -mv=5e  ;;
3274                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3275                 esac
3276                 ;;
3277             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3278             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3279             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3280             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3281             -msoft-float)   echo --float_support=vfplib       ;;
3282             -O[0-3]|-mf=*)  echo $flag                        ;;
3283             -g)             echo -g -mn                       ;;
3284             -pds=*)         echo $flag                        ;;
3285             -D*|-I*)        echo $flag                        ;;
3286             --gcc|--abi=*)  echo $flag                        ;;
3287             -me)            echo $flag                        ;;
3288         esac
3289     done
3290 }
3291
3292 probe_cc(){
3293     pfx=$1
3294     _cc=$2
3295
3296     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3297     unset _ld_o _ldflags _ld_lib _ld_path
3298     unset _depflags _DEPCMD _DEPFLAGS
3299     _flags_filter=echo
3300
3301     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3302         _type=llvm_gcc
3303         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3304         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3305         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3306         _cflags_speed='-O3'
3307         _cflags_size='-Os'
3308     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3309         _type=gcc
3310         gcc_version=$($_cc --version | head -n1)
3311         gcc_basever=$($_cc -dumpversion)
3312         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3313         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3314         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3315         if ! $_cc -dumpversion | grep -q '^2\.'; then
3316             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3317         fi
3318         _cflags_speed='-O3'
3319         _cflags_size='-Os'
3320     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3321         _type=icc
3322         _ident=$($_cc --version | head -n1)
3323         _depflags='-MMD'
3324         _cflags_speed='-O3'
3325         _cflags_size='-Os'
3326         _cflags_noopt='-O1'
3327     elif $_cc -v 2>&1 | grep -q xlc; then
3328         _type=xlc
3329         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3330         _cflags_speed='-O5'
3331         _cflags_size='-O5 -qcompact'
3332     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3333         test -d "$sysroot" || die "No valid sysroot specified."
3334         _type=armcc
3335         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3336         armcc_conf="$PWD/armcc.conf"
3337         $_cc --arm_linux_configure                 \
3338              --arm_linux_config_file="$armcc_conf" \
3339              --configure_sysroot="$sysroot"        \
3340              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3341              die "Error creating armcc configuration file."
3342         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3343         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3344         as_default="${cross_prefix}gcc"
3345         _depflags='-MMD'
3346         _cflags_speed='-O3'
3347         _cflags_size='-Os'
3348     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3349         _type=tms470
3350         _ident=$($_cc -version | head -n1 | tr -s ' ')
3351         _flags='--gcc --abi=eabi -me'
3352         _cc_e='-ppl -fe=$@'
3353         _cc_o='-fe=$@'
3354         _depflags='-ppa -ppd=$(@:.o=.d)'
3355         _cflags_speed='-O3 -mf=5'
3356         _cflags_size='-O3 -mf=2'
3357         _flags_filter=tms470_flags
3358     elif $_cc -v 2>&1 | grep -q clang; then
3359         _type=clang
3360         _ident=$($_cc --version 2>/dev/null | head -n1)
3361         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3362         _cflags_speed='-O3'
3363         _cflags_size='-Os'
3364     elif $_cc -V 2>&1 | grep -q Sun; then
3365         _type=suncc
3366         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3367         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3368         _DEPFLAGS='-xM1 -xc99'
3369         _ldflags='-std=c99'
3370         _cflags_speed='-O5'
3371         _cflags_size='-O5 -xspace'
3372         _flags_filter=suncc_flags
3373     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3374         _type=pathscale
3375         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3376         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3377         _cflags_speed='-O2'
3378         _cflags_size='-Os'
3379         _flags_filter='filter_out -Wdisabled-optimization'
3380     elif $_cc -v 2>&1 | grep -q Open64; then
3381         _type=open64
3382         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3383         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3384         _cflags_speed='-O2'
3385         _cflags_size='-Os'
3386         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3387     elif $_cc -V 2>&1 | grep -q Portland; then
3388         _type=pgi
3389         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3390         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3391         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3392         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3393         _cflags_noopt="-O1"
3394         _flags_filter=pgi_flags
3395     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3396         _type=armasm
3397         _ident=$($_cc | head -n1)
3398         # 4509: "This form of conditional instruction is deprecated"
3399         _flags="-nologo -ignore 4509"
3400         _flags_filter=armasm_flags
3401     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3402         _type=msvc
3403         _ident=$($_cc 2>&1 | head -n1)
3404         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3405         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3406         _cflags_speed="-O2"
3407         _cflags_size="-O1"
3408         _cflags_noopt="-O1"
3409         if $_cc -nologo- 2>&1 | grep -q Linker; then
3410             _ld_o='-out:$@'
3411         else
3412             _ld_o='-Fe$@'
3413         fi
3414         _cc_o='-Fo$@'
3415         _cc_e='-P -Fi$@'
3416         _flags_filter=msvc_flags
3417         _ld_lib='lib%.a'
3418         _ld_path='-libpath:'
3419         _flags='-nologo'
3420     elif $_cc 2>&1 | grep -q Intel; then
3421         _type=icl
3422         _ident=$($_cc 2>&1 | head -n1)
3423         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3424         # Not only is O3 broken on 13.x+ but it is slower on all previous
3425         # versions (tested) as well.
3426         _cflags_speed="-O2"
3427         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3428         if $_cc 2>&1 | grep -q Linker; then
3429             _ld_o='-out:$@'
3430         else
3431             _ld_o='-Fe$@'
3432         fi
3433         _cc_o='-Fo$@'
3434         _cc_e='-P'
3435         _flags_filter=icl_flags
3436         _ld_lib='lib%.a'
3437         _ld_path='-libpath:'
3438         # -Qdiag-error to make icl error when seeing certain unknown arguments
3439         _flags='-nologo -Qdiag-error:4044,10157'
3440         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3441         # with MSVC which enables it by default.
3442         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3443     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3444         # lld can emulate multiple different linkers; in ms link.exe mode,
3445         # the -? parameter gives the help output which contains an identifyable
3446         # string, while it gives an error in other modes.
3447         _type=lld-link
3448         # The link.exe mode doesn't have a switch for getting the version,
3449         # but we can force it back to gnu mode and get the version from there.
3450         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3451         _ld_o='-out:$@'
3452         _flags_filter=msvc_flags
3453         _ld_lib='lib%.a'
3454         _ld_path='-libpath:'
3455     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3456         _type=cparser
3457         _ident=$($_cc --version | head -n1)
3458         _depflags='-MMD'
3459         _cflags_speed='-O4'
3460         _cflags_size='-O2'
3461         _flags_filter=cparser_flags
3462     fi
3463
3464     eval ${pfx}_type=\$_type
3465     eval ${pfx}_ident=\$_ident
3466 }
3467
3468 set_ccvars(){
3469     eval ${1}_C=\${_cc_c-\${${1}_C}}
3470     eval ${1}_E=\${_cc_e-\${${1}_E}}
3471     eval ${1}_O=\${_cc_o-\${${1}_O}}
3472
3473     if [ -n "$_depflags" ]; then
3474         eval ${1}_DEPFLAGS=\$_depflags
3475     else
3476         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3477         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3478         eval DEP${1}FLAGS=\$_flags
3479     fi
3480 }
3481
3482 probe_cc cc "$cc"
3483 cflags_filter=$_flags_filter
3484 cflags_speed=$_cflags_speed
3485 cflags_size=$_cflags_size
3486 cflags_noopt=$_cflags_noopt
3487 add_cflags $_flags $_cflags
3488 cc_ldflags=$_ldflags
3489 set_ccvars CC
3490
3491 probe_cc hostcc "$host_cc"
3492 host_cflags_filter=$_flags_filter
3493 host_cflags_speed=$_cflags_speed
3494 add_host_cflags  $_flags $_cflags
3495 set_ccvars HOSTCC
3496
3497 test -n "$cc_type" && enable $cc_type ||
3498     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3499
3500 : ${as_default:=$cc}
3501 : ${objcc_default:=$cc}
3502 : ${dep_cc_default:=$cc}
3503 : ${ld_default:=$cc}
3504 : ${host_ld_default:=$host_cc}
3505 set_default ar as objcc dep_cc ld host_ld
3506
3507 probe_cc as "$as"
3508 asflags_filter=$_flags_filter
3509 add_asflags $_flags $_cflags
3510 set_ccvars AS
3511
3512 probe_cc objcc "$objcc"
3513 objcflags_filter=$_flags_filter
3514 add_objcflags $_flags $_cflags
3515 set_ccvars OBJC
3516
3517 probe_cc ld "$ld"
3518 ldflags_filter=$_flags_filter
3519 add_ldflags $_flags $_ldflags
3520 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3521 LD_O=${_ld_o-$LD_O}
3522 LD_LIB=${_ld_lib-$LD_LIB}
3523 LD_PATH=${_ld_path-$LD_PATH}
3524
3525 probe_cc hostld "$host_ld"
3526 host_ldflags_filter=$_flags_filter
3527 add_host_ldflags $_flags $_ldflags
3528 HOSTLD_O=${_ld_o-$HOSTLD_O}
3529
3530 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3531     probe_cc depcc "$dep_cc"
3532     CCDEP=${_DEPCMD:-$DEPCMD}
3533     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3534     DEPCCFLAGS=$_flags
3535 fi
3536
3537 if $ar 2>&1 | grep -q Microsoft; then
3538     arflags="-nologo"
3539     ar_o='-out:$@'
3540 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3541     arflags="rq"
3542     ar_o='$@'
3543 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3544     arflags='-Xany -r -c'
3545     ar_o='$@'
3546 else
3547     arflags="rc"
3548     ar_o='$@'
3549 fi
3550
3551 add_cflags $extra_cflags
3552 add_objcflags $extra_objcflags
3553 add_asflags $extra_cflags
3554
3555 if test -n "$sysroot"; then
3556     case "$cc_type" in
3557         gcc|llvm_gcc|clang)
3558             add_cppflags --sysroot="$sysroot"
3559             add_ldflags --sysroot="$sysroot"
3560         ;;
3561         tms470)
3562             add_cppflags -I"$sysinclude"
3563             add_ldflags  --sysroot="$sysroot"
3564         ;;
3565     esac
3566 fi
3567
3568 if test "$cpu" = host; then
3569     enabled cross_compile &&
3570         die "--cpu=host makes no sense when cross-compiling."
3571
3572     case "$cc_type" in
3573         gcc|llvm_gcc)
3574             check_native(){
3575                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3576                 sed -n "/cc1.*$1=/{
3577                             s/.*$1=\\([^ ]*\\).*/\\1/
3578                             p
3579                             q
3580                         }" $TMPE
3581             }
3582             cpu=$(check_native -march || check_native -mcpu)
3583         ;;
3584     esac
3585
3586     test "${cpu:-host}" = host &&
3587         die "--cpu=host not supported with compiler $cc"
3588 fi
3589
3590 # Deal with common $arch aliases
3591 case "$arch" in
3592     aarch64|arm64)
3593         arch="aarch64"
3594     ;;
3595     arm*)
3596         arch="arm"
3597     ;;
3598     mips*|IP*)
3599         case "$arch" in
3600         *el)
3601             add_cppflags -EL
3602             add_ldflags -EL
3603         ;;
3604         *eb)
3605             add_cppflags -EB
3606             add_ldflags -EB
3607         ;;
3608         esac
3609         arch="mips"
3610     ;;
3611     parisc*|hppa*)
3612         arch="parisc"
3613     ;;
3614     "Power Macintosh"|ppc*|powerpc*)
3615         arch="ppc"
3616     ;;
3617     s390|s390x)
3618         arch="s390"
3619     ;;
3620     sh4|sh)
3621         arch="sh4"
3622     ;;
3623     sun4u|sparc*)
3624         arch="sparc"
3625     ;;
3626     tilegx|tile-gx)
3627         arch="tilegx"
3628     ;;
3629     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3630         arch="x86"
3631     ;;
3632 esac
3633
3634 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3635 enable $arch
3636
3637 # Add processor-specific flags
3638 if enabled aarch64; then
3639
3640     case $cpu in
3641         armv*)
3642             cpuflags="-march=$cpu"
3643         ;;
3644         *)
3645             cpuflags="-mcpu=$cpu"
3646         ;;
3647     esac
3648
3649 elif enabled alpha; then
3650
3651     cpuflags="-mcpu=$cpu"
3652
3653 elif enabled arm; then
3654
3655     check_arm_arch() {
3656         check_cpp_condition stddef.h \
3657             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3658             $cpuflags
3659     }
3660
3661     probe_arm_arch() {
3662         if   check_arm_arch 4;        then echo armv4
3663         elif check_arm_arch 4T;       then echo armv4t
3664         elif check_arm_arch 5;        then echo armv5
3665         elif check_arm_arch 5E;       then echo armv5e
3666         elif check_arm_arch 5T;       then echo armv5t
3667         elif check_arm_arch 5TE;      then echo armv5te
3668         elif check_arm_arch 5TEJ;     then echo armv5te
3669         elif check_arm_arch 6;        then echo armv6
3670         elif check_arm_arch 6J;       then echo armv6j
3671         elif check_arm_arch 6K;       then echo armv6k
3672         elif check_arm_arch 6Z;       then echo armv6z
3673         elif check_arm_arch 6ZK;      then echo armv6zk
3674         elif check_arm_arch 6T2;      then echo armv6t2
3675         elif check_arm_arch 7;        then echo armv7
3676         elif check_arm_arch 7A  7_A;  then echo armv7-a
3677         elif check_arm_arch 7S;       then echo armv7-a
3678         elif check_arm_arch 7R  7_R;  then echo armv7-r
3679         elif check_arm_arch 7M  7_M;  then echo armv7-m
3680         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3681         elif check_arm_arch 8A  8_A;  then echo armv8-a
3682         fi
3683     }
3684
3685     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3686
3687     case $cpu in
3688         armv*)
3689             cpuflags="-march=$cpu"
3690             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3691         ;;
3692         *)
3693             cpuflags="-mcpu=$cpu"
3694             case $cpu in
3695                 cortex-a*)                               subarch=armv7a  ;;
3696                 cortex-r*)                               subarch=armv7r  ;;
3697                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3698                 arm11*)                                  subarch=armv6   ;;
3699                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3700                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3701                 *)                             subarch=$(probe_arm_arch) ;;
3702             esac
3703         ;;
3704     esac
3705
3706     case "$subarch" in
3707         armv5t*)    enable fast_clz                ;;
3708         armv[6-8]*) enable fast_clz fast_unaligned ;;
3709     esac
3710
3711 elif enabled avr32; then
3712
3713     case $cpu in
3714         ap7[02]0[0-2])
3715             subarch="avr32_ap"
3716             cpuflags="-mpart=$cpu"
3717         ;;
3718         ap)
3719             subarch="avr32_ap"
3720             cpuflags="-march=$cpu"
3721         ;;
3722         uc3[ab]*)
3723             subarch="avr32_uc"
3724             cpuflags="-mcpu=$cpu"
3725         ;;
3726         uc)
3727             subarch="avr32_uc"
3728             cpuflags="-march=$cpu"
3729         ;;
3730     esac
3731
3732 elif enabled bfin; then
3733
3734     cpuflags="-mcpu=$cpu"
3735
3736 elif enabled mips; then
3737
3738     cpuflags="-march=$cpu"
3739
3740 elif enabled ppc; then
3741
3742     disable ldbrx
3743
3744     case $(tolower $cpu) in
3745         601|ppc601|powerpc601)
3746             cpuflags="-mcpu=601"
3747             disable altivec
3748         ;;
3749         603*|ppc603*|powerpc603*)
3750             cpuflags="-mcpu=603"
3751             disable altivec
3752         ;;
3753         604*|ppc604*|powerpc604*)
3754             cpuflags="-mcpu=604"
3755             disable altivec
3756         ;;
3757         g3|75*|ppc75*|powerpc75*)
3758             cpuflags="-mcpu=750"
3759             disable altivec
3760         ;;
3761         g4|745*|ppc745*|powerpc745*)
3762             cpuflags="-mcpu=7450"
3763             disable vsx
3764         ;;
3765         74*|ppc74*|powerpc74*)
3766             cpuflags="-mcpu=7400"
3767             disable vsx
3768         ;;
3769         g5|970|ppc970|powerpc970)
3770             cpuflags="-mcpu=970"
3771             disable vsx
3772         ;;
3773         power[3-6]*)
3774             cpuflags="-mcpu=$cpu"
3775             disable vsx
3776         ;;
3777         power[7-8]*)
3778             cpuflags="-mcpu=$cpu"
3779             enable ldbrx
3780         ;;
3781         cell)
3782             cpuflags="-mcpu=cell"
3783             enable ldbrx
3784             disable vsx
3785         ;;
3786         e500mc)
3787             cpuflags="-mcpu=e500mc"
3788             disable altivec
3789         ;;
3790         e500v2)
3791             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3792             disable altivec
3793             disable dcbzl
3794         ;;
3795         e500)
3796             cpuflags="-mcpu=8540 -mhard-float"
3797             disable altivec
3798             disable dcbzl
3799         ;;
3800     esac
3801
3802 elif enabled sparc; then
3803
3804     case $cpu in
3805         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3806             cpuflags="-mcpu=$cpu"
3807         ;;
3808         ultrasparc*|niagara[234])
3809             cpuflags="-mcpu=$cpu"
3810         ;;
3811     esac
3812
3813 elif enabled x86; then
3814
3815     case $cpu in
3816         i[345]86|pentium)
3817             cpuflags="-march=$cpu"
3818             disable i686
3819             disable mmx
3820         ;;
3821         # targets that do NOT support nopl and conditional mov (cmov)
3822         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3823             cpuflags="-march=$cpu"
3824             disable i686
3825         ;;
3826         # targets that do support nopl and conditional mov (cmov)
3827         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3828             cpuflags="-march=$cpu"
3829             enable i686
3830             enable fast_cmov
3831         ;;
3832         # targets that do support conditional mov but on which it's slow
3833         pentium4|pentium4m|prescott|nocona)
3834             cpuflags="-march=$cpu"
3835             enable i686
3836             disable fast_cmov
3837         ;;
3838     esac
3839
3840 fi
3841
3842 if [ "$cpu" != generic ]; then
3843     add_cflags  $cpuflags
3844     add_asflags $cpuflags
3845     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3846 fi
3847
3848 # compiler sanity check
3849 check_exec <<EOF
3850 int main(void){ return 0; }
3851 EOF
3852 if test "$?" != 0; then
3853     echo "$cc is unable to create an executable file."
3854     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3855         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3856         echo "Only do this if you know what cross compiling means."
3857     fi
3858     die "C compiler test failed."
3859 fi
3860
3861 add_cppflags -D_ISOC99_SOURCE
3862
3863 # some compilers silently accept -std=c11, so we also need to check that the
3864 # version macro is defined properly
3865 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3866     add_cflags -std=c11 ||
3867     check_cflags -std=c99
3868
3869 check_cppflags -D_FILE_OFFSET_BITS=64
3870 check_cppflags -D_LARGEFILE_SOURCE
3871
3872 add_host_cppflags -D_ISOC99_SOURCE
3873 check_host_cflags -std=c99
3874 check_host_cflags -Wall
3875 check_host_cflags $host_cflags_speed
3876
3877 check_64bit(){
3878     arch32=$1
3879     arch64=$2
3880     expr=$3
3881     check_code cc "" "int test[2*($expr) - 1]" &&
3882         subarch=$arch64 || subarch=$arch32
3883 }
3884
3885 case "$arch" in
3886     aarch64|alpha|ia64)
3887         spic=$shared
3888     ;;
3889     mips)
3890         check_64bit mips mips64 '_MIPS_SIM > 1'
3891         spic=$shared
3892     ;;
3893     parisc)
3894         check_64bit parisc parisc64 'sizeof(void *) > 4'
3895         spic=$shared
3896     ;;
3897     ppc)
3898         check_64bit ppc ppc64 'sizeof(void *) > 4'
3899         spic=$shared
3900     ;;
3901     s390)
3902         check_64bit s390 s390x 'sizeof(void *) > 4'
3903         spic=$shared
3904     ;;
3905     sparc)
3906         check_64bit sparc sparc64 'sizeof(void *) > 4'
3907         spic=$shared
3908     ;;
3909     x86)
3910         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3911         if test "$subarch" = "x86_64"; then
3912             spic=$shared
3913         fi
3914     ;;
3915 esac
3916
3917 enable $subarch
3918 enabled spic && enable_weak pic
3919
3920 enabled x86_64 && objformat=elf64 || objformat="elf32"
3921
3922 # OS specific
3923 case $target_os in
3924     aix)
3925         SHFLAGS=-shared
3926         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3927         enabled shared && add_ldflags -Wl,-brtl
3928         ;;
3929     android)
3930         disable symver
3931         enable section_data_rel_ro
3932         SLIB_INSTALL_NAME='$(SLIBNAME)'
3933         SLIB_INSTALL_LINKS=
3934         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3935         ;;
3936     haiku)
3937         prefix_default="/boot/common"
3938         network_extralibs="-lnetwork"
3939         host_extralibs=
3940         ;;
3941     sunos)
3942         SHFLAGS='-shared -Wl,-h,$$(@F)'
3943         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3944         network_extralibs="-lsocket -lnsl"
3945         # When using suncc to build, the Solaris linker will mark
3946         # an executable with each instruction set encountered by
3947         # the Solaris assembler.  As our libraries contain their own
3948         # guards for processor-specific code, instead suppress
3949         # generation of the HWCAPS ELF section on Solaris x86 only.
3950         enabled_all suncc x86 &&
3951             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3952             add_ldflags -Wl,-M,mapfile
3953         nm_default='nm -P -g'
3954         version_script='-M'
3955         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3956         ;;
3957     netbsd)
3958         disable symver
3959         oss_indev_extralibs="-lossaudio"
3960         oss_outdev_extralibs="-lossaudio"
3961         ;;
3962     openbsd|bitrig)
3963         disable symver
3964         SHFLAGS='-shared'
3965         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3966         SLIB_INSTALL_LINKS=
3967         oss_indev_extralibs="-lossaudio"
3968         oss_outdev_extralibs="-lossaudio"
3969         ;;
3970     dragonfly)
3971         disable symver
3972         ;;
3973     freebsd)
3974         ;;
3975     bsd/os)
3976         add_extralibs -lpoll -lgnugetopt
3977         ;;
3978     darwin)
3979         enabled ppc && add_asflags -force_cpusubtype_ALL
3980         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3981         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3982         add_ldflags -Wl,-dynamic,-search_paths_first
3983         check_cflags -Werror=partial-availability
3984         SLIBSUF=".dylib"
3985         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3986         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3987         enabled x86_64 && objformat="macho64" || objformat="macho32"
3988         enabled_any pic shared ||
3989             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3990         check_header dispatch/dispatch.h &&
3991             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3992         if test -n "$sysroot"; then
3993             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3994             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3995         fi
3996         ;;
3997     msys*)
3998         die "Native MSYS builds are discouraged, please use the MINGW environment."
3999         ;;
4000     mingw32*|mingw64*)
4001         target_os=mingw32
4002         LIBTARGET=i386
4003         if enabled x86_64; then
4004             LIBTARGET="i386:x86-64"
4005         fi
4006         if enabled shared; then
4007             # Cannot build both shared and static libs when using dllexport.
4008             disable static
4009         fi
4010         check_ldflags -Wl,--nxcompat
4011         check_ldflags -Wl,--dynamicbase
4012         shlibdir_default="$bindir_default"
4013         SLIBPREF=""
4014         SLIBSUF=".dll"
4015         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4016         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4017         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4018         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4019         SLIB_INSTALL_LINKS=
4020         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4021         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4022         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4023         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4024         enabled x86_64 && objformat="win64" || objformat="win32"
4025         dlltool="${cross_prefix}dlltool"
4026         ranlib=:
4027         enable dos_paths
4028         ;;
4029     win32|win64)
4030         disable symver
4031         if enabled shared; then
4032             # Link to the import library instead of the normal static library
4033             # for shared libs.
4034             LD_LIB='%.lib'
4035             # Cannot build both shared and static libs with MSVC or icl.
4036             disable static
4037         fi
4038         shlibdir_default="$bindir_default"
4039         SLIBPREF=""
4040         SLIBSUF=".dll"
4041         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4042         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4043         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4044         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4045         SLIB_INSTALL_LINKS=
4046         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4047         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4048         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4049         enabled x86_64 && objformat="win64" || objformat="win32"
4050         ranlib=:
4051         enable dos_paths
4052         ;;
4053     cygwin*)
4054         target_os=cygwin
4055         shlibdir_default="$bindir_default"
4056         SLIBPREF="cyg"
4057         SLIBSUF=".dll"
4058         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4059         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4060         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4061         SLIB_INSTALL_LINKS=
4062         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4063         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4064         enabled x86_64 && objformat="win64" || objformat="win32"
4065         enable dos_paths
4066         ;;
4067     *-dos|freedos|opendos)
4068         network_extralibs="-lsocket"
4069         objformat="coff"
4070         enable dos_paths
4071         add_cppflags -U__STRICT_ANSI__
4072         ;;
4073     linux)
4074         enable dv1394
4075         enable section_data_rel_ro
4076         ;;
4077     irix*)
4078         target_os=irix
4079         ranlib="echo ignoring ranlib"
4080         ;;
4081     os/2*)
4082         ln_s="cp -f"
4083         objformat="aout"
4084         add_cppflags -D_GNU_SOURCE
4085         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4086         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4087         LIBSUF="_s.a"
4088         SLIBPREF=""
4089         SLIBSUF=".dll"
4090         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4091         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4092         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4093             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4094             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4095             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4096             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4097         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4098             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4099         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4100         enable dos_paths
4101         ;;
4102     gnu/kfreebsd)
4103         add_cppflags -D_BSD_SOURCE
4104         ;;
4105     gnu)
4106         ;;
4107     qnx)
4108         add_cppflags -D_QNX_SOURCE
4109         network_extralibs="-lsocket"
4110         ;;
4111     symbian)
4112         SLIBSUF=".dll"
4113         enable dos_paths
4114         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4115         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4116         add_ldflags -Wl,--target1-abs,--no-undefined \
4117                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4118                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4119         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4120                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4121                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4122         ;;
4123     minix)
4124         ;;
4125     none)
4126         ;;
4127     *)
4128         die "Unknown OS '$target_os'."
4129         ;;
4130 esac
4131
4132 # determine libc flavour
4133
4134 probe_libc(){
4135     pfx=$1
4136     pfx_no_=${pfx%_}
4137     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4138     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4139         eval ${pfx}libc_type=uclibc
4140         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4141     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4142         eval ${pfx}libc_type=glibc
4143         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4144     # MinGW headers can be installed on Cygwin, so check for newlib first.
4145     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4146         eval ${pfx}libc_type=newlib
4147         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4148     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4149     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4150         eval ${pfx}libc_type=mingw64
4151         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4152         eval test \$${pfx_no_}cc_type = "gcc" &&
4153             add_${pfx}cppflags -D__printf__=__gnu_printf__
4154     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4155          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4156         eval ${pfx}libc_type=mingw32
4157         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4158             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4159             die "ERROR: MinGW32 runtime version must be >= 3.15."
4160         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4161         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4162             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4163         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4164             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4165         eval test \$${pfx_no_}cc_type = "gcc" &&
4166             add_${pfx}cppflags -D__printf__=__gnu_printf__
4167     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4168         eval ${pfx}libc_type=msvcrt
4169         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4170             if [ "$pfx" = host_ ]; then
4171                 add_host_cppflags -Dsnprintf=_snprintf
4172             else
4173                 add_compat strtod.o strtod=avpriv_strtod
4174                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4175                                              _snprintf=avpriv_snprintf  \
4176                                              vsnprintf=avpriv_vsnprintf
4177             fi
4178         fi
4179         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4180         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4181         # 0x601 by default unless something else is set by the user.
4182         # This can easily lead to us detecting functions only present
4183         # in such new versions and producing binaries requiring windows 7.0.
4184         # Therefore explicitly set the default to XP unless the user has
4185         # set something else on the command line.
4186         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4187         # family. For these cases, configure is free to use any functions
4188         # found in the SDK headers by default. (Alternatively, we could force
4189         # _WIN32_WINNT to 0x0602 in that case.)
4190         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4191             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4192 #ifdef WINAPI_FAMILY
4193 #include <winapifamily.h>
4194 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4195 #error not desktop
4196 #endif
4197 #endif
4198 EOF
4199         if [ "$pfx" = "" ]; then
4200             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4201         fi
4202     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4203         eval ${pfx}libc_type=klibc
4204     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4205         eval ${pfx}libc_type=bionic
4206     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4207         eval ${pfx}libc_type=solaris
4208         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4209     else
4210         eval ${pfx}libc_type=default
4211         add_${pfx}cppflags -D_DEFAULT_SOURCE
4212     fi
4213 }
4214
4215 probe_libc
4216 test -n "$libc_type" && enable libc_$libc_type
4217 probe_libc host_
4218 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4219
4220 # hacks for compiler/libc/os combinations
4221
4222 case $libc_type in
4223     bionic)
4224         add_compat strtod.o strtod=avpriv_strtod
4225         ;;
4226     glibc)
4227         if enabled tms470; then
4228             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4229             add_cppflags -D__USER_LABEL_PREFIX__=
4230             add_cppflags -D__builtin_memset=memset
4231             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4232             add_cflags   -pds=48    # incompatible redefinition of macro
4233         fi
4234         ;;
4235 esac
4236
4237 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4238     add_cppflags '-I\$(SRC_PATH)/compat/float'
4239
4240 esc(){
4241     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4242 }
4243
4244 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4245
4246 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4247
4248 set_default $PATHS_LIST
4249 set_default nm
4250
4251 # we need to build at least one lib type
4252 if ! enabled_any static shared; then
4253     cat <<EOF
4254 At least one library type must be built.
4255 Specify --enable-static to build the static libraries or --enable-shared to
4256 build the shared libraries as well. To only build the shared libraries specify
4257 --disable-static in addition to --enable-shared.
4258 EOF
4259     exit 1
4260 fi
4261
4262 disabled optimizations || check_cflags -fomit-frame-pointer
4263
4264 enable_weak_pic() {
4265     disabled pic && return
4266     enable pic
4267     add_cppflags -DPIC
4268     case "$target_os" in
4269     mingw*|cygwin*)
4270         ;;
4271     *)
4272         add_cflags -fPIC
4273         ;;
4274     esac
4275     add_asflags  -fPIC
4276 }
4277
4278 enabled pic && enable_weak_pic
4279
4280 check_cc <<EOF || die "Symbol mangling check failed."
4281 int ff_extern;
4282 EOF
4283 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4284 extern_prefix=${sym%%ff_extern*}
4285
4286 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4287
4288 _restrict=
4289 for restrict_keyword in restrict __restrict__ __restrict; do
4290     check_cc <<EOF && _restrict=$restrict_keyword && break
4291 void foo(char * $restrict_keyword p);
4292 EOF
4293 done
4294
4295 check_cc <<EOF && enable pragma_deprecated
4296 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4297 EOF
4298
4299 check_cc <<EOF && enable attribute_packed
4300 struct { int x; } __attribute__((packed)) x;
4301 EOF
4302
4303 check_cc <<EOF && enable attribute_may_alias
4304 union { int x; } __attribute__((may_alias)) x;
4305 EOF
4306
4307 check_cc <<EOF || die "endian test failed"
4308 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4309 EOF
4310 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4311
4312 check_gas() {
4313     log "check_gas using '$as' as AS"
4314     # :vararg is used on aarch64, arm and ppc altivec
4315     check_as <<EOF || return 1
4316 .macro m n, y:vararg=0
4317 \n: .int \y
4318 .endm
4319 m x
4320 EOF
4321     # .altmacro is only used in arm asm
4322     ! enabled arm || check_as <<EOF || return 1
4323 .altmacro
4324 EOF
4325     enable gnu_as
4326     return 0
4327 }
4328
4329 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4330     nogas=:
4331     enabled_any arm aarch64 && nogas=die
4332     enabled_all ppc altivec && nogas=warn
4333     as_noop=-v
4334
4335     case $as_type in
4336         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4337         gcc)  gaspp_as_type=gas ;;
4338         *)    gaspp_as_type=$as_type ;;
4339     esac
4340
4341     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4342
4343     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4344         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4345
4346     if ! check_gas ; then
4347         as=${gas:=$as}
4348         check_gas || \
4349             $nogas "GNU assembler not found, install/update gas-preprocessor"
4350     fi
4351
4352     check_as <<EOF && enable as_func
4353 .func test
4354 .endfunc
4355 EOF
4356 fi
4357
4358 check_inline_asm inline_asm_labels '"1:\n"'
4359
4360 if enabled aarch64; then
4361     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4362     # internal assembler in clang 3.3 does not support this instruction
4363     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4364     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4365
4366     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4367
4368 elif enabled alpha; then
4369
4370     check_cflags -mieee
4371
4372 elif enabled arm; then
4373
4374     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4375     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4376     enabled thumb && check_cflags -mthumb || check_cflags -marm
4377
4378     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4379         enable vfp_args
4380     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4381         enable vfp_args
4382     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4383         case "${cross_prefix:-$cc}" in
4384             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4385             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4386 __asm__ (".eabi_attribute 28, 1");
4387 int main(void) { return 0; }
4388 EOF
4389         esac
4390         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4391     fi
4392
4393     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4394     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4395     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4396     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4397     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4398     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4399
4400     [ $target_os = linux ] || [ $target_os = android ] ||
4401         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4402             $ARCH_EXT_LIST_ARM
4403
4404     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4405
4406     check_as <<EOF && enable as_arch_directive
4407 .arch armv7-a
4408 EOF
4409     check_as <<EOF && enable as_fpu_directive
4410 .fpu neon
4411 EOF
4412
4413     # llvm's integrated assembler supports .object_arch from llvm 3.5
4414     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4415         check_as <<EOF && enable as_object_arch
4416 .object_arch armv4
4417 EOF
4418
4419     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4420
4421 elif enabled mips; then
4422
4423     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4424
4425     # make sure that only an instruction set is enabled
4426     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4427
4428     if enabled mips64; then
4429         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4430             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4431                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4432     else
4433         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4434             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4435                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4436     fi
4437
4438 elif enabled parisc; then
4439
4440     if enabled gcc; then
4441         case $($cc -dumpversion) in
4442             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4443         esac
4444     fi
4445
4446 elif enabled ppc; then
4447
4448     enable local_aligned_8 local_aligned_16 local_aligned_32
4449
4450     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4451     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4452     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4453     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4454
4455     if enabled altivec; then
4456         check_cflags -maltivec -mabi=altivec
4457
4458         # check if our compiler supports Motorola AltiVec C API
4459         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4460                                  vector signed int v2 = (vector signed int) { 1 };
4461                                  v1 = vec_add(v1, v2);" ||
4462             disable altivec
4463
4464         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4465     fi
4466
4467     if enabled vsx; then
4468         check_cflags -mvsx &&
4469         check_code cc altivec.h "int v[4] = { 0 };
4470                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4471             disable vsx
4472     fi
4473
4474     if enabled power8; then
4475         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4476     fi
4477
4478 elif enabled x86; then
4479
4480     check_builtin rdtsc    intrin.h   "__rdtsc()"
4481     check_builtin mm_empty mmintrin.h "_mm_empty()"
4482
4483     enable local_aligned_8 local_aligned_16 local_aligned_32
4484
4485     # check whether EBP is available on x86
4486     # As 'i' is stored on the stack, this program will crash
4487     # if the base pointer is used to access it because the
4488     # base pointer is cleared in the inline assembly code.
4489     check_exec_crash <<EOF && enable ebp_available
4490 volatile int i=0;
4491 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4492 return i;
4493 EOF
4494
4495     # check whether EBX is available on x86
4496     check_inline_asm ebx_available '""::"b"(0)' &&
4497         check_inline_asm ebx_available '"":::"%ebx"'
4498
4499     # check whether xmm clobbers are supported
4500     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4501
4502     # check whether binutils is new enough to compile SSSE3/MMXEXT
4503     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4504     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4505
4506     probe_x86asm(){
4507         x86asmexe_probe=$1
4508         if check_cmd $x86asmexe_probe -v; then
4509             x86asmexe=$x86asmexe_probe
4510             x86asm_type=nasm
4511             x86asm_debug="-g -F dwarf"
4512             X86ASMDEP=
4513             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4514         elif check_cmd $x86asmexe_probe --version; then
4515             x86asmexe=$x86asmexe_probe
4516             x86asm_type=yasm
4517             x86asm_debug="-g dwarf2"
4518             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4519             X86ASM_DEPFLAGS=
4520         fi
4521         check_x86asm "movbe ecx, [5]" && enable x86asm
4522     }
4523
4524     if ! disabled_any asm mmx x86asm; then
4525         disable x86asm
4526         for program in $x86asmexe nasm yasm; do
4527             probe_x86asm $program && break
4528         done
4529         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4530         X86ASMFLAGS="-f $objformat"
4531         enabled pic               && append X86ASMFLAGS "-DPIC"
4532         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4533         case "$objformat" in
4534             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4535         esac
4536
4537         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4538         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4539         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4540         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4541         check_x86asm "CPU amdnop"                      || disable cpunop
4542     fi
4543
4544     case "$cpu" in
4545         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4546             disable fast_clz
4547         ;;
4548     esac
4549
4550 fi
4551
4552 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4553
4554 check_ldflags -Wl,--as-needed
4555
4556 if ! disabled network; then
4557     check_func getaddrinfo $network_extralibs
4558     check_func inet_aton $network_extralibs
4559
4560     check_type netdb.h "struct addrinfo"
4561     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4562     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4563     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4564     check_type poll.h "struct pollfd"
4565     check_type netinet/sctp.h "struct sctp_event_subscribe"
4566     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4567     check_type netinet/in.h "struct sockaddr_in6"
4568     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4569     check_type "sys/types.h sys/socket.h" socklen_t
4570
4571     # Prefer arpa/inet.h over winsock2
4572     if check_header arpa/inet.h ; then
4573         check_func closesocket
4574     elif check_header winsock2.h ; then
4575         check_func_headers winsock2.h closesocket -lws2 &&
4576             network_extralibs="-lws2" ||
4577         { check_func_headers winsock2.h closesocket -lws2_32 &&
4578             network_extralibs="-lws2_32"; } || disable winsock2_h network
4579         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4580
4581         check_type ws2tcpip.h socklen_t
4582         check_type ws2tcpip.h "struct addrinfo"
4583         check_type ws2tcpip.h "struct group_source_req"
4584         check_type ws2tcpip.h "struct ip_mreq_source"
4585         check_type ws2tcpip.h "struct ipv6_mreq"
4586         check_type winsock2.h "struct pollfd"
4587         check_struct winsock2.h "struct sockaddr" sa_len
4588         check_type ws2tcpip.h "struct sockaddr_in6"
4589         check_type ws2tcpip.h "struct sockaddr_storage"
4590     else
4591         disable network
4592     fi
4593 fi
4594
4595 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4596 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4597 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4598 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4599
4600 case "$custom_allocator" in
4601     jemalloc)
4602         # jemalloc by default does not use a prefix
4603         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4604     ;;
4605     tcmalloc)
4606         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4607         malloc_prefix=tc_
4608     ;;
4609 esac
4610
4611 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4612 check_func  ${malloc_prefix}memalign            && enable memalign
4613 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4614
4615 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4616     { check_lib clock_gettime time.h clock_gettime ||
4617       check_lib clock_gettime time.h clock_gettime -lrt; }
4618
4619 check_func  fcntl
4620 check_func  fork
4621 check_func  gethrtime
4622 check_func  getopt
4623 check_func  getrusage
4624 check_func  gettimeofday
4625 check_func  gmtime_r
4626 check_func  isatty
4627 check_func  localtime_r
4628 check_func  mach_absolute_time
4629 check_func  mkstemp
4630 check_func  mmap
4631 check_func  mprotect
4632 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4633 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4634 check_func  sched_getaffinity
4635 check_func  setrlimit
4636 check_func  strerror_r
4637 check_func  sysconf
4638 check_func  sysctl
4639 check_func  usleep
4640
4641 check_func_headers io.h setmode
4642 check_func_headers stdlib.h getenv
4643
4644 check_func_headers windows.h GetProcessAffinityMask
4645 check_func_headers windows.h GetProcessTimes
4646 check_func_headers windows.h GetSystemTimeAsFileTime
4647 check_func_headers windows.h LoadLibrary
4648 check_func_headers windows.h MapViewOfFile
4649 check_func_headers windows.h SetConsoleTextAttribute
4650 check_func_headers windows.h Sleep
4651 check_func_headers windows.h VirtualAlloc
4652 check_struct windows.h "CONDITION_VARIABLE" Ptr
4653
4654 check_header direct.h
4655 check_header dxgidebug.h
4656 check_header dxva.h
4657 check_header dxva2api.h
4658 check_header io.h
4659 check_header mach/mach_time.h
4660 check_header malloc.h
4661 check_header poll.h
4662 check_header sys/param.h
4663 check_header sys/resource.h
4664 check_header sys/select.h
4665 check_header sys/time.h
4666 check_header sys/un.h
4667 check_header unistd.h
4668 check_header valgrind/valgrind.h
4669 check_header VideoDecodeAcceleration/VDADecoder.h
4670 check_header windows.h
4671
4672 # it seems there are versions of clang in some distros that try to use the
4673 # gcc headers, which explodes for stdatomic
4674 # so we also check that atomics actually work here
4675 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4676
4677 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4678 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4679 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4680 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4681
4682 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4683
4684 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4685 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4686 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4687
4688 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4689 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4690 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4691
4692 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4693 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4694 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4695 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4696 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4697 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4698 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4699 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4700 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4701
4702 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4703
4704 if ! disabled w32threads && ! enabled pthreads; then
4705     check_lib w32threads "windows.h process.h" _beginthreadex
4706 fi
4707
4708 # check for some common methods of building with pthread support
4709 # do this before the optional library checks as some of them require pthreads
4710 if ! disabled pthreads && ! enabled w32threads; then
4711     if check_lib pthreads pthread.h pthread_join -pthread; then
4712         add_cflags -pthread
4713     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4714         add_cflags -pthreads
4715     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4716         :
4717     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4718         :
4719     elif check_func pthread_join; then
4720         enable pthreads
4721     fi
4722 fi
4723
4724 enabled pthreads &&
4725     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4726
4727 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4728 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4729
4730 # On some systems dynamic loading requires no extra linker flags
4731 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4732
4733 check_lib libm math.h sin -lm
4734
4735 atan2f_args=2
4736 ldexpf_args=2
4737 powf_args=2
4738
4739 for func in $MATH_FUNCS; do
4740     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4741 done
4742
4743 # these are off by default, so fail if requested and not available
4744 enabled avisynth          && require_header avisynth/avisynth_c.h
4745 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4746 enabled cuda              && require cuda cuda.h cuInit -lcuda
4747 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4748 enabled frei0r            && require_header frei0r.h
4749 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4750 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4751 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4752 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4753 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4754 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4755 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4756 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4757 enabled libgsm            && require libgsm gsm._h gsm_create -lgsm
4758 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4759 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4760 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4761 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4762 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4763 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4764 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4765 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4766 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4767 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4768 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4769                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4770 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4771 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4772 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4773 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4774 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4775 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4776 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4777 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4778 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4779 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4780 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4781 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4782                              { enabled libvpx_vp8_decoder &&
4783                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4784                                enabled libvpx_vp8_encoder &&
4785                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4786                                enabled libvpx_vp9_decoder &&
4787                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4788                                enabled libvpx_vp9_encoder &&
4789                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4790                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4791                                    die "libvpx enabled but no supported decoders/encoders found"
4792                              }
4793 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4794 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4795 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4796                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4797                              { check_cpp_condition x264.h "X264_MPEG2" &&
4798                                enable libx262; }
4799 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4800                              require_cpp_condition x265.h "X265_BUILD >= 57"
4801 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4802 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4803 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4804                                { ! enabled cross_compile &&
4805                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4806                                  add_ldflags -L/opt/vc/lib/ &&
4807                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4808                                die "ERROR: mmal not found" &&
4809                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4810 enabled omx               && require_header OMX_Core.h
4811 enabled omx_rpi           && { check_header OMX_Core.h ||
4812                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4813                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4814 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4815                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4816                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4817                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4818                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4819                                die "ERROR: openssl not found"; }
4820
4821 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4822
4823 if enabled nvenc; then
4824     require_header nvEncodeAPI.h
4825     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4826 fi
4827
4828 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4829 enabled avplay &&
4830     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4831
4832 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4833 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4834
4835 check_header linux/fb.h
4836 check_header linux/videodev2.h
4837 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4838
4839 check_header AVFoundation/AVFoundation.h
4840
4841 check_header sys/videoio.h
4842
4843 check_lib user32 "windows.h winuser.h" GetShellWindow