configure: Fix stupid typo in gsm.h header name
[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 COMPONENT_LIST="
1246     $AVCODEC_COMPONENTS
1247     $AVDEVICE_COMPONENTS
1248     $AVFILTER_COMPONENTS
1249     $AVFORMAT_COMPONENTS
1250 "
1251
1252 EXAMPLE_LIST="
1253     decode_audio_example
1254     decode_video_example
1255     encode_audio_example
1256     encode_video_example
1257     filter_audio_example
1258     metadata_example
1259     output_example
1260     qsvdec_example
1261     transcode_aac_example
1262 "
1263
1264 # catchall list of things that require external libs to link
1265 EXTRALIBS_LIST="
1266     cpu_init
1267     cws2fws
1268 "
1269
1270 HWACCEL_LIBRARY_NONFREE_LIST="
1271     cuda
1272     cuvid
1273     libnpp
1274 "
1275 HWACCEL_LIBRARY_LIST="
1276     $HWACCEL_LIBRARY_NONFREE_LIST
1277     d3d11va
1278     dxva2
1279     libmfx
1280     mmal
1281     nvenc
1282     omx
1283     vaapi
1284     vda
1285     vdpau
1286 "
1287
1288 EXTERNAL_LIBRARY_GPL_LIST="
1289     libcdio
1290     libx264
1291     libx265
1292     libxavs
1293     libxvid
1294 "
1295
1296 EXTERNAL_LIBRARY_NONFREE_LIST="
1297     libfaac
1298     libfdk_aac
1299     openssl
1300 "
1301
1302 EXTERNAL_LIBRARY_VERSION3_LIST="
1303     libopencore_amrnb
1304     libopencore_amrwb
1305     libvo_aacenc
1306     libvo_amrwbenc
1307 "
1308
1309 EXTERNAL_LIBRARY_LIST="
1310     $EXTERNAL_LIBRARY_GPL_LIST
1311     $EXTERNAL_LIBRARY_NONFREE_LIST
1312     $EXTERNAL_LIBRARY_VERSION3_LIST
1313     avisynth
1314     avxsynth
1315     frei0r
1316     gnutls
1317     libbs2b
1318     libdc1394
1319     libdcadec
1320     libfontconfig
1321     libfreetype
1322     libgsm
1323     libhdcd
1324     libilbc
1325     libjack
1326     libkvazaar
1327     libmp3lame
1328     libopencv
1329     libopenh264
1330     libopenjpeg
1331     libopus
1332     libpulse
1333     librtmp
1334     libschroedinger
1335     libsnappy
1336     libspeex
1337     libtheora
1338     libtwolame
1339     libvorbis
1340     libvpx
1341     libwavpack
1342     libwebp
1343     libxcb
1344     libxcb_shm
1345     libxcb_xfixes
1346 "
1347
1348 SYSTEM_LIBRARY_LIST="
1349     bzlib
1350     zlib
1351 "
1352
1353 FEATURE_LIST="
1354     gray
1355     hardcoded_tables
1356     omx_rpi
1357     runtime_cpudetect
1358     safe_bitstream_reader
1359     shared
1360     small
1361     sram
1362     static
1363     swscale_alpha
1364 "
1365
1366 LIBRARY_LIST="
1367     avcodec
1368     avdevice
1369     avfilter
1370     avformat
1371     avresample
1372     avutil
1373     swscale
1374 "
1375
1376 LICENSE_LIST="
1377     gpl
1378     nonfree
1379     version3
1380 "
1381
1382 PROGRAM_LIST="
1383     avconv
1384     avplay
1385     avprobe
1386 "
1387
1388 SUBSYSTEM_LIST="
1389     dct
1390     doc
1391     error_resilience
1392     faan
1393     fft
1394     lsp
1395     lzo
1396     mdct
1397     network
1398     rdft
1399 "
1400
1401 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1402 CONFIG_LIST="
1403     $EXAMPLE_LIST
1404     $EXTERNAL_LIBRARY_LIST
1405     $HWACCEL_LIBRARY_LIST
1406     $FEATURE_LIST
1407     $LICENSE_LIST
1408     $LIBRARY_LIST
1409     $PROGRAM_LIST
1410     $SUBSYSTEM_LIST
1411     $SYSTEM_LIBRARY_LIST
1412     neon_clobber_test
1413     pic
1414     pod2man
1415     texi2html
1416     thumb
1417     valgrind_backtrace
1418     xmm_clobber_test
1419     $COMPONENT_LIST
1420 "
1421
1422 THREADS_LIST="
1423     pthreads
1424     w32threads
1425 "
1426
1427 ATOMICS_LIST="
1428     atomics_gcc
1429     atomics_suncc
1430     atomics_win32
1431 "
1432
1433 ARCH_LIST="
1434     aarch64
1435     alpha
1436     arm
1437     avr32
1438     avr32_ap
1439     avr32_uc
1440     bfin
1441     ia64
1442     m68k
1443     mips
1444     mips64
1445     parisc
1446     ppc
1447     ppc64
1448     s390
1449     sh4
1450     sparc
1451     sparc64
1452     tilegx
1453     tilepro
1454     tomi
1455     x86
1456     x86_32
1457     x86_64
1458 "
1459
1460 ARCH_EXT_LIST_ARM="
1461     armv5te
1462     armv6
1463     armv6t2
1464     armv8
1465     neon
1466     vfp
1467     vfpv3
1468 "
1469
1470 ARCH_EXT_LIST_X86_SIMD="
1471     amd3dnow
1472     amd3dnowext
1473     avx
1474     avx2
1475     fma3
1476     fma4
1477     mmx
1478     mmxext
1479     sse
1480     sse2
1481     sse3
1482     sse4
1483     sse42
1484     ssse3
1485     xop
1486 "
1487
1488 ARCH_EXT_LIST_PPC="
1489     altivec
1490     dcbzl
1491     ldbrx
1492     power8
1493     ppc4xx
1494     vsx
1495 "
1496
1497 ARCH_EXT_LIST_X86="
1498     $ARCH_EXT_LIST_X86_SIMD
1499     cpunop
1500     i686
1501 "
1502
1503 ARCH_EXT_LIST_MIPS="
1504     loongson
1505     mips32r1
1506     mips64r1
1507     mips32r2
1508     mips64r2
1509     mips32r6
1510     mips64r6
1511 "
1512
1513 ARCH_EXT_LIST="
1514     $ARCH_EXT_LIST_ARM
1515     $ARCH_EXT_LIST_MIPS
1516     $ARCH_EXT_LIST_PPC
1517     $ARCH_EXT_LIST_X86
1518     vis
1519 "
1520
1521 ARCH_FEATURES="
1522     aligned_stack
1523     fast_64bit
1524     fast_clz
1525     fast_cmov
1526     local_aligned_8
1527     local_aligned_16
1528     local_aligned_32
1529     simd_align_16
1530     simd_align_32
1531 "
1532
1533 BUILTIN_LIST="
1534     atomic_cas_ptr
1535     machine_rw_barrier
1536     MemoryBarrier
1537     mm_empty
1538     rdtsc
1539     sem_timedwait
1540     sync_val_compare_and_swap
1541 "
1542 HAVE_LIST_CMDLINE="
1543     inline_asm
1544     symver
1545     x86asm
1546 "
1547
1548 HAVE_LIST_PUB="
1549     bigendian
1550     fast_unaligned
1551 "
1552
1553 HEADERS_LIST="
1554     AVFoundation_AVFoundation_h
1555     arpa_inet_h
1556     cdio_paranoia_h
1557     cdio_paranoia_paranoia_h
1558     dispatch_dispatch_h
1559     dev_bktr_ioctl_bt848_h
1560     dev_bktr_ioctl_meteor_h
1561     dev_ic_bt8xx_h
1562     dev_video_bktr_ioctl_bt848_h
1563     dev_video_meteor_ioctl_meteor_h
1564     direct_h
1565     dxgidebug_h
1566     dxva_h
1567     io_h
1568     mach_mach_time_h
1569     machine_ioctl_bt848_h
1570     machine_ioctl_meteor_h
1571     malloc_h
1572     poll_h
1573     stdatomic_h
1574     sys_param_h
1575     sys_resource_h
1576     sys_select_h
1577     sys_soundcard_h
1578     sys_time_h
1579     sys_un_h
1580     sys_videoio_h
1581     unistd_h
1582     valgrind_valgrind_h
1583     windows_h
1584     winsock2_h
1585 "
1586
1587 INTRINSICS_LIST="
1588     intrinsics_neon
1589 "
1590
1591 MATH_FUNCS="
1592     atanf
1593     atan2f
1594     cbrtf
1595     cosf
1596     exp2
1597     exp2f
1598     expf
1599     isinf
1600     isnan
1601     ldexpf
1602     llrint
1603     llrintf
1604     log2
1605     log2f
1606     log10f
1607     lrint
1608     lrintf
1609     powf
1610     rint
1611     round
1612     roundf
1613     sinf
1614     trunc
1615     truncf
1616 "
1617
1618 SYSTEM_FUNCS="
1619     aligned_malloc
1620     clock_gettime
1621     closesocket
1622     CommandLineToArgvW
1623     CryptGenRandom
1624     fcntl
1625     getaddrinfo
1626     gethrtime
1627     getopt
1628     GetProcessAffinityMask
1629     GetProcessMemoryInfo
1630     GetProcessTimes
1631     getrusage
1632     GetSystemTimeAsFileTime
1633     gettimeofday
1634     gmtime_r
1635     inet_aton
1636     isatty
1637     localtime_r
1638     mach_absolute_time
1639     MapViewOfFile
1640     memalign
1641     mmap
1642     mprotect
1643     nanosleep
1644     posix_memalign
1645     sched_getaffinity
1646     SetConsoleTextAttribute
1647     setmode
1648     setrlimit
1649     Sleep
1650     strerror_r
1651     sysconf
1652     sysctl
1653     usleep
1654     VirtualAlloc
1655 "
1656
1657 TOOLCHAIN_FEATURES="
1658     as_arch_directive
1659     as_fpu_directive
1660     as_func
1661     as_object_arch
1662     asm_mod_q
1663     blocks_extension
1664     ebp_available
1665     ebx_available
1666     gnu_as
1667     ibm_asm
1668     inline_asm_labels
1669     pragma_deprecated
1670     symver_asm_label
1671     symver_gnu_asm
1672     vfp_args
1673     xform_asm
1674     xmm_clobbers
1675 "
1676
1677 TYPES_LIST="
1678     CONDITION_VARIABLE_Ptr
1679     CUVIDDECODECREATEINFO_bitDepthMinus8
1680     socklen_t
1681     struct_addrinfo
1682     struct_group_source_req
1683     struct_ip_mreq_source
1684     struct_ipv6_mreq
1685     struct_pollfd
1686     struct_rusage_ru_maxrss
1687     struct_sockaddr_in6
1688     struct_sockaddr_sa_len
1689     struct_sockaddr_storage
1690     struct_v4l2_frmivalenum_discrete
1691 "
1692
1693 HAVE_LIST="
1694     $ARCH_EXT_LIST
1695     $(add_suffix _external $ARCH_EXT_LIST)
1696     $(add_suffix _inline   $ARCH_EXT_LIST)
1697     $ARCH_FEATURES
1698     $BUILTIN_LIST
1699     $HAVE_LIST_CMDLINE
1700     $HAVE_LIST_PUB
1701     $HEADERS_LIST
1702     $INTRINSICS_LIST
1703     $MATH_FUNCS
1704     $SYSTEM_FUNCS
1705     $THREADS_LIST
1706     $TOOLCHAIN_FEATURES
1707     $TYPES_LIST
1708     dos_paths
1709     libc_msvcrt
1710     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1711     sdl
1712     section_data_rel_ro
1713     threads
1714     uwp
1715     vaapi_drm
1716     vaapi_x11
1717     vdpau_x11
1718 "
1719
1720 # options emitted with CONFIG_ prefix but not available on the command line
1721 CONFIG_EXTRA="
1722     aandcttables
1723     ac3dsp
1724     adts_header
1725     audio_frame_queue
1726     audiodsp
1727     blockdsp
1728     bswapdsp
1729     cabac
1730     cbs
1731     cbs_h264
1732     cbs_h265
1733     cbs_mpeg2
1734     dirac_parse
1735     dvprofile
1736     faandct
1737     faanidct
1738     fdctdsp
1739     flacdsp
1740     fmtconvert
1741     g722dsp
1742     gmp
1743     golomb
1744     gplv3
1745     h263dsp
1746     h264chroma
1747     h264dsp
1748     h264parse
1749     h264pred
1750     h264qpel
1751     hevcparse
1752     hpeldsp
1753     huffman
1754     huffyuvdsp
1755     huffyuvencdsp
1756     idctdsp
1757     iirfilter
1758     imdct15
1759     intrax8
1760     iso_media
1761     ividsp
1762     jpegtables
1763     lgplv3
1764     libx262
1765     libxcb_shape
1766     lpc
1767     lzf
1768     me_cmp
1769     mpeg_er
1770     mpegaudio
1771     mpegaudiodsp
1772     mpegaudioheader
1773     mpegvideo
1774     mpegvideoenc
1775     mss34dsp
1776     pixblockdsp
1777     qpeldsp
1778     qsv
1779     qsvdec
1780     qsvenc
1781     qsvvpp
1782     rangecoder
1783     riffdec
1784     riffenc
1785     rtpdec
1786     rtpenc_chain
1787     rv34dsp
1788     sinewin
1789     snappy
1790     srtp
1791     startcode
1792     texturedsp
1793     texturedspenc
1794     tpeldsp
1795     vaapi_encode
1796     vc1dsp
1797     videodsp
1798     vp3dsp
1799     vp56dsp
1800     vp8dsp
1801     wma_freqs
1802     wmv2dsp
1803 "
1804
1805 CMDLINE_SELECT="
1806     $ARCH_EXT_LIST
1807     $CONFIG_LIST
1808     $HAVE_LIST_CMDLINE
1809     $THREADS_LIST
1810     asm
1811     cross_compile
1812     debug
1813     extra_warnings
1814     logging
1815     lto
1816     optimizations
1817     rpath
1818 "
1819
1820 PATHS_LIST="
1821     bindir
1822     datadir
1823     docdir
1824     incdir
1825     libdir
1826     mandir
1827     prefix
1828     shlibdir
1829 "
1830
1831 CMDLINE_SET="
1832     $PATHS_LIST
1833     ar
1834     arch
1835     as
1836     cc
1837     objcc
1838     cpu
1839     cross_prefix
1840     custom_allocator
1841     dep_cc
1842     env
1843     extra_version
1844     host_cc
1845     host_cflags
1846     host_extralibs
1847     host_ld
1848     host_ldflags
1849     host_os
1850     ignore_tests
1851     ld
1852     logfile
1853     malloc_prefix
1854     nm
1855     optflags
1856     pkg_config
1857     pkg_config_flags
1858     random_seed
1859     samples
1860     sysinclude
1861     sysroot
1862     target_exec
1863     target_os
1864     target_path
1865     target_samples
1866     toolchain
1867     x86asmexe
1868 "
1869
1870 CMDLINE_APPEND="
1871     extra_cflags
1872     extra_objcflags
1873     host_cppflags
1874 "
1875
1876 # code dependency declarations
1877
1878 # architecture extensions
1879
1880 armv5te_deps="arm"
1881 armv6_deps="arm"
1882 armv6t2_deps="arm"
1883 armv8_deps="aarch64"
1884 neon_deps_any="aarch64 arm"
1885 intrinsics_neon_deps="neon"
1886 vfp_deps_any="aarch64 arm"
1887 vfpv3_deps="vfp"
1888
1889 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1890
1891 altivec_deps="ppc"
1892 dcbzl_deps="ppc"
1893 ldbrx_deps="ppc"
1894 ppc4xx_deps="ppc"
1895 vsx_deps="altivec"
1896 power8_deps="vsx"
1897
1898 loongson_deps="mips"
1899 mips32r1_deps="mips32"
1900 mips32r2_deps="mips32"
1901 mips32r6_deps="mips32"
1902 mips64r1_deps="mips64"
1903 mips64r2_deps="mips64"
1904 mips64r6_deps="mips64"
1905
1906 vis_deps="sparc"
1907
1908 cpunop_deps="i686"
1909 x86_64_select="i686"
1910 x86_64_suggest="fast_cmov"
1911
1912 amd3dnow_deps="mmx"
1913 amd3dnowext_deps="amd3dnow"
1914 i686_deps="x86"
1915 mmx_deps="x86"
1916 mmxext_deps="mmx"
1917 sse_deps="mmxext"
1918 sse2_deps="sse"
1919 sse3_deps="sse2"
1920 ssse3_deps="sse3"
1921 sse4_deps="ssse3"
1922 sse42_deps="sse4"
1923 avx_deps="sse42"
1924 xop_deps="avx"
1925 fma3_deps="avx"
1926 fma4_deps="avx"
1927 avx2_deps="avx"
1928
1929 mmx_external_deps="x86asm"
1930 mmx_inline_deps="inline_asm x86"
1931 mmx_suggest="mmx_external mmx_inline"
1932
1933 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1934     eval dep=\$${ext}_deps
1935     eval ${ext}_external_deps='"${dep}_external"'
1936     eval ${ext}_inline_deps='"${dep}_inline"'
1937     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1938 done
1939
1940 aligned_stack_if_any="aarch64 ppc x86"
1941 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1942 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1943 fast_unaligned_if_any="aarch64 ppc x86"
1944 simd_align_16_if_any="altivec neon sse"
1945 simd_align_32_if_any="avx"
1946
1947 # system capabilities
1948 symver_if_any="symver_asm_label symver_gnu_asm"
1949 valgrind_backtrace_conflict="optimizations"
1950 valgrind_backtrace_deps="valgrind_valgrind_h"
1951
1952 # threading support
1953 atomics_gcc_if="sync_val_compare_and_swap"
1954 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1955 atomics_win32_if="MemoryBarrier"
1956 atomics_native_if_any="$ATOMICS_LIST"
1957 w32threads_deps="atomics_native"
1958 threads_if_any="$THREADS_LIST"
1959
1960 # subsystems
1961 cbs_h264_select="cbs golomb"
1962 cbs_h265_select="cbs golomb"
1963 cbs_mpeg2_select="cbs"
1964 dct_select="rdft"
1965 dirac_parse_select="golomb"
1966 error_resilience_select="me_cmp"
1967 faandct_deps="faan"
1968 faandct_select="fdctdsp"
1969 faanidct_deps="faan"
1970 faanidct_select="idctdsp"
1971 h264dsp_select="startcode"
1972 hevcparse_select="golomb"
1973 intrax8_select="blockdsp idctdsp"
1974 mdct_select="fft"
1975 rdft_select="fft"
1976 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1977 mpeg_er_select="error_resilience"
1978 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1979 mpegaudiodsp_select="dct"
1980 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1981 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1982 vc1dsp_select="h264chroma qpeldsp startcode"
1983
1984 # decoders / encoders
1985 aac_decoder_select="adts_header imdct15 mdct sinewin"
1986 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1987 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1988 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1989 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1990 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1991 adpcm_g722_decoder_select="g722dsp"
1992 adpcm_g722_encoder_select="g722dsp"
1993 aic_decoder_select="golomb idctdsp"
1994 alac_encoder_select="lpc"
1995 als_decoder_select="bswapdsp"
1996 amrnb_decoder_select="lsp"
1997 amrwb_decoder_select="lsp"
1998 amv_decoder_select="sp5x_decoder"
1999 ape_decoder_select="bswapdsp"
2000 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2001 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2002 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2003 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2004 atrac1_decoder_select="mdct sinewin"
2005 atrac3_decoder_select="mdct"
2006 atrac3p_decoder_select="mdct sinewin"
2007 bink_decoder_select="blockdsp hpeldsp"
2008 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2009 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2010 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2011 clearvideo_decoder_select="idctdsp"
2012 cllc_decoder_select="bswapdsp"
2013 comfortnoise_encoder_select="lpc"
2014 cook_decoder_select="audiodsp mdct sinewin"
2015 cscd_decoder_select="lzo"
2016 cscd_decoder_suggest="zlib"
2017 dca_decoder_select="fmtconvert mdct"
2018 dds_decoder_select="texturedsp"
2019 dnxhd_decoder_select="blockdsp idctdsp"
2020 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2021 dvvideo_decoder_select="dvprofile idctdsp"
2022 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2023 dxa_decoder_deps="zlib"
2024 dxv_decoder_select="lzf texturedsp"
2025 eac3_decoder_select="ac3_decoder"
2026 eac3_encoder_select="ac3_encoder"
2027 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2028 eatgq_decoder_select="aandcttables idctdsp"
2029 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2030 exr_decoder_deps="zlib"
2031 ffv1_decoder_select="rangecoder"
2032 ffv1_encoder_select="rangecoder"
2033 ffvhuff_decoder_select="huffyuv_decoder"
2034 ffvhuff_encoder_select="huffyuv_encoder"
2035 fic_decoder_select="golomb"
2036 flac_decoder_select="flacdsp"
2037 flac_encoder_select="bswapdsp flacdsp lpc"
2038 flashsv_decoder_deps="zlib"
2039 flashsv_encoder_deps="zlib"
2040 flashsv2_decoder_deps="zlib"
2041 flv_decoder_select="h263_decoder"
2042 flv_encoder_select="h263_encoder"
2043 fourxm_decoder_select="blockdsp bswapdsp"
2044 fraps_decoder_select="bswapdsp huffman"
2045 g2m_decoder_deps="zlib"
2046 g2m_decoder_select="blockdsp idctdsp jpegtables"
2047 h261_decoder_select="mpeg_er mpegvideo"
2048 h261_encoder_select="aandcttables mpegvideoenc"
2049 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2050 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2051 h263i_decoder_select="h263_decoder"
2052 h263p_encoder_select="h263_encoder"
2053 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2054 h264_decoder_suggest="error_resilience"
2055 hap_decoder_select="snappy texturedsp"
2056 hap_encoder_deps="libsnappy"
2057 hap_encoder_select="texturedspenc"
2058 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2059 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2060 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2061 iac_decoder_select="imc_decoder"
2062 imc_decoder_select="bswapdsp fft mdct sinewin"
2063 indeo3_decoder_select="hpeldsp"
2064 indeo4_decoder_select="ividsp"
2065 indeo5_decoder_select="ividsp"
2066 interplay_video_decoder_select="hpeldsp"
2067 jpegls_decoder_select="mjpeg_decoder"
2068 jv_decoder_select="blockdsp"
2069 lagarith_decoder_select="huffyuvdsp"
2070 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2071 magicyuv_decoder_select="huffyuvdsp"
2072 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2073 metasound_decoder_select="lsp mdct sinewin"
2074 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2075 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2076 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2077 mjpegb_decoder_select="mjpeg_decoder"
2078 mlp_decoder_select="mlp_parser"
2079 motionpixels_decoder_select="bswapdsp"
2080 mp1_decoder_select="mpegaudio"
2081 mp1float_decoder_select="mpegaudio"
2082 mp2_decoder_select="mpegaudio"
2083 mp2float_decoder_select="mpegaudio"
2084 mp3_decoder_select="mpegaudio"
2085 mp3adu_decoder_select="mpegaudio"
2086 mp3adufloat_decoder_select="mpegaudio"
2087 mp3float_decoder_select="mpegaudio"
2088 mp3on4_decoder_select="mpegaudio"
2089 mp3on4float_decoder_select="mpegaudio"
2090 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2091 mpc8_decoder_select="mpegaudiodsp"
2092 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2093 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2094 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2095 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2096 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2097 mpeg4_encoder_select="h263_encoder"
2098 msa1_decoder_select="mss34dsp"
2099 msmpeg4v1_decoder_select="h263_decoder"
2100 msmpeg4v2_decoder_select="h263_decoder"
2101 msmpeg4v2_encoder_select="h263_encoder"
2102 msmpeg4v3_decoder_select="h263_decoder"
2103 msmpeg4v3_encoder_select="h263_encoder"
2104 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2105 mts2_decoder_select="mss34dsp"
2106 mxpeg_decoder_select="mjpeg_decoder"
2107 nellymoser_decoder_select="mdct sinewin"
2108 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2109 nuv_decoder_select="idctdsp lzo"
2110 on2avc_decoder_select="mdct"
2111 opus_decoder_deps="avresample"
2112 opus_decoder_select="imdct15"
2113 png_decoder_deps="zlib"
2114 png_encoder_deps="zlib"
2115 png_encoder_select="huffyuvencdsp"
2116 prores_decoder_select="idctdsp"
2117 prores_encoder_select="fdctdsp"
2118 qcelp_decoder_select="lsp"
2119 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2120 ra_144_encoder_select="audio_frame_queue lpc"
2121 ralf_decoder_select="golomb"
2122 rscc_decoder_deps="zlib"
2123 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2124 rv10_encoder_select="h263_encoder"
2125 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2126 rv20_encoder_select="h263_encoder"
2127 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2128 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2129 screenpresso_decoder_deps="zlib"
2130 sipr_decoder_select="lsp"
2131 sp5x_decoder_select="mjpeg_decoder"
2132 svq1_decoder_select="hpeldsp"
2133 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2134 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2135 svq3_decoder_suggest="zlib"
2136 tak_decoder_select="audiodsp"
2137 tdsc_decoder_deps="zlib"
2138 tdsc_decoder_select="mjpeg_decoder"
2139 theora_decoder_select="vp3_decoder"
2140 thp_decoder_select="mjpeg_decoder"
2141 tiff_decoder_suggest="zlib"
2142 tiff_encoder_suggest="zlib"
2143 truehd_decoder_select="mlp_decoder"
2144 truemotion2_decoder_select="bswapdsp"
2145 truespeech_decoder_select="bswapdsp"
2146 tscc_decoder_deps="zlib"
2147 txd_decoder_select="texturedsp"
2148 twinvq_decoder_select="mdct lsp sinewin"
2149 utvideo_decoder_select="bswapdsp huffyuvdsp"
2150 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2151 vble_decoder_select="huffyuvdsp"
2152 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2153 vc1image_decoder_select="vc1_decoder"
2154 vorbis_decoder_select="mdct"
2155 vorbis_encoder_select="mdct"
2156 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2157 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2158 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2159 vp6a_decoder_select="vp6_decoder"
2160 vp6f_decoder_select="vp6_decoder"
2161 vp7_decoder_select="h264pred videodsp vp8dsp"
2162 vp8_decoder_select="h264pred videodsp vp8dsp"
2163 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2164 webp_decoder_select="vp8_decoder"
2165 wmapro_decoder_select="mdct sinewin wma_freqs"
2166 wmav1_decoder_select="mdct sinewin wma_freqs"
2167 wmav1_encoder_select="mdct sinewin wma_freqs"
2168 wmav2_decoder_select="mdct sinewin wma_freqs"
2169 wmav2_encoder_select="mdct sinewin wma_freqs"
2170 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2171 wmv1_decoder_select="h263_decoder"
2172 wmv1_encoder_select="h263_encoder"
2173 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2174 wmv2_encoder_select="h263_encoder wmv2dsp"
2175 wmv3_decoder_select="vc1_decoder"
2176 wmv3image_decoder_select="wmv3_decoder"
2177 zerocodec_decoder_deps="zlib"
2178 zlib_decoder_deps="zlib"
2179 zlib_encoder_deps="zlib"
2180 zmbv_decoder_deps="zlib"
2181 zmbv_encoder_deps="zlib"
2182
2183 # hardware accelerators
2184 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2185 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2186 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2187 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2188
2189 h263_vaapi_hwaccel_deps="vaapi"
2190 h263_vaapi_hwaccel_select="h263_decoder"
2191 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2192 h264_cuvid_hwaccel_select="h264_decoder"
2193 h264_d3d11va_hwaccel_deps="d3d11va"
2194 h264_d3d11va_hwaccel_select="h264_decoder"
2195 h264_d3d11va2_hwaccel_deps="d3d11va"
2196 h264_d3d11va2_hwaccel_select="h264_decoder"
2197 h264_dxva2_hwaccel_deps="dxva2"
2198 h264_dxva2_hwaccel_select="h264_decoder"
2199 h264_mmal_hwaccel_deps="mmal"
2200 h264_qsv_hwaccel_deps="libmfx"
2201 h264_vaapi_hwaccel_deps="vaapi"
2202 h264_vaapi_hwaccel_select="h264_decoder"
2203 h264_vda_hwaccel_deps="vda"
2204 h264_vda_hwaccel_select="h264_decoder"
2205 h264_vda_old_hwaccel_deps="vda"
2206 h264_vda_old_hwaccel_select="h264_decoder"
2207 h264_vdpau_hwaccel_deps="vdpau"
2208 h264_vdpau_hwaccel_select="h264_decoder"
2209 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2210 hevc_cuvid_hwaccel_select="hevc_decoder"
2211 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2212 hevc_d3d11va_hwaccel_select="hevc_decoder"
2213 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2214 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2215 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2216 hevc_dxva2_hwaccel_select="hevc_decoder"
2217 hevc_qsv_hwaccel_deps="libmfx"
2218 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2219 hevc_vaapi_hwaccel_select="hevc_decoder"
2220 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2221 hevc_vdpau_hwaccel_select="hevc_decoder"
2222 mpeg1_vdpau_hwaccel_deps="vdpau"
2223 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2224 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2225 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2226 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2227 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2228 mpeg2_dxva2_hwaccel_deps="dxva2"
2229 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2230 mpeg2_mmal_hwaccel_deps="mmal"
2231 mpeg2_qsv_hwaccel_deps="libmfx"
2232 mpeg2_vaapi_hwaccel_deps="vaapi"
2233 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2234 mpeg2_vdpau_hwaccel_deps="vdpau"
2235 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2236 mpeg4_vaapi_hwaccel_deps="vaapi"
2237 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2238 mpeg4_vdpau_hwaccel_deps="vdpau"
2239 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2240 vc1_d3d11va_hwaccel_deps="d3d11va"
2241 vc1_d3d11va_hwaccel_select="vc1_decoder"
2242 vc1_d3d11va2_hwaccel_deps="d3d11va"
2243 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2244 vc1_dxva2_hwaccel_deps="dxva2"
2245 vc1_dxva2_hwaccel_select="vc1_decoder"
2246 vc1_mmal_hwaccel_deps="mmal"
2247 vc1_qsv_hwaccel_deps="libmfx"
2248 vc1_vaapi_hwaccel_deps="vaapi"
2249 vc1_vaapi_hwaccel_select="vc1_decoder"
2250 vc1_vdpau_hwaccel_deps="vdpau"
2251 vc1_vdpau_hwaccel_select="vc1_decoder"
2252 vp8_qsv_hwaccel_deps="libmfx"
2253 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2254 vp8_vaapi_hwaccel_select="vp8_decoder"
2255 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2256 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2257 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2258 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2259 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2260
2261 # hardware-accelerated codecs
2262 nvenc_deps_any="libdl LoadLibrary"
2263 omx_deps="libdl pthreads"
2264 omx_rpi_select="omx"
2265 qsv_deps="libmfx"
2266 qsvdec_select="qsv"
2267 qsvenc_select="qsv"
2268 qsvvpp_select="qsv"
2269 vaapi_encode_deps="vaapi"
2270
2271 hwupload_cuda_filter_deps="cuda"
2272 scale_npp_filter_deps="cuda libnpp"
2273
2274 h264_mmal_decoder_deps="mmal"
2275 h264_nvenc_encoder_deps="nvenc"
2276 h264_omx_encoder_deps="omx"
2277 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2278 h264_qsv_encoder_select="qsvenc"
2279 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2280 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2281 hevc_nvenc_encoder_deps="nvenc"
2282 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2283 hevc_qsv_encoder_select="hevcparse qsvenc"
2284 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2285 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2286 mjpeg_qsv_encoder_deps="libmfx"
2287 mjpeg_qsv_encoder_select="qsvenc"
2288 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2289 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2290 mpeg2_mmal_decoder_deps="mmal"
2291 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2292 mpeg2_qsv_encoder_select="qsvenc"
2293 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2294 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2295 mpeg4_omx_encoder_deps="omx"
2296 vc1_mmal_decoder_deps="mmal"
2297 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2298 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2299 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2300 vp8_vaapi_encoder_select="vaapi_encode"
2301 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2302 vp9_vaapi_encoder_select="vaapi_encode"
2303
2304 nvenc_h264_encoder_select="h264_nvenc_encoder"
2305 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2306
2307 # parsers
2308 aac_parser_select="adts_header"
2309 h264_parser_select="golomb h264dsp h264parse"
2310 hevc_parser_select="hevcparse"
2311 mpegaudio_parser_select="mpegaudioheader"
2312 mpegvideo_parser_select="mpegvideo"
2313 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2314 vc1_parser_select="vc1dsp"
2315
2316 # bitstream_filters
2317 aac_adtstoasc_bsf_select="adts_header"
2318 h264_metadata_bsf_select="cbs_h264"
2319 h264_redundant_pps_bsf_select="cbs_h264"
2320 hevc_metadata_bsf_select="cbs_h265"
2321 mjpeg2jpeg_bsf_select="jpegtables"
2322 mpeg2_metadata_bsf_select="cbs_mpeg2"
2323 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2324
2325 # external libraries
2326 avisynth_deps="LoadLibrary"
2327 avxsynth_deps="libdl"
2328 avisynth_demuxer_deps_any="avisynth avxsynth"
2329 avisynth_demuxer_select="riffdec"
2330 libdcadec_decoder_deps="libdcadec"
2331 libfaac_encoder_deps="libfaac"
2332 libfaac_encoder_select="audio_frame_queue"
2333 libfdk_aac_decoder_deps="libfdk_aac"
2334 libfdk_aac_encoder_deps="libfdk_aac"
2335 libfdk_aac_encoder_select="audio_frame_queue"
2336 libgsm_decoder_deps="libgsm"
2337 libgsm_encoder_deps="libgsm"
2338 libgsm_ms_decoder_deps="libgsm"
2339 libgsm_ms_encoder_deps="libgsm"
2340 libilbc_decoder_deps="libilbc"
2341 libilbc_encoder_deps="libilbc"
2342 libkvazaar_encoder_deps="libkvazaar"
2343 libmp3lame_encoder_deps="libmp3lame"
2344 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2345 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2346 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2347 libopencore_amrnb_encoder_select="audio_frame_queue"
2348 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2349 libopenh264_decoder_deps="libopenh264"
2350 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2351 libopenh264_encoder_deps="libopenh264"
2352 libopenjpeg_decoder_deps="libopenjpeg"
2353 libopenjpeg_encoder_deps="libopenjpeg"
2354 libopus_decoder_deps="libopus"
2355 libopus_encoder_deps="libopus"
2356 libopus_encoder_select="audio_frame_queue"
2357 libschroedinger_decoder_deps="libschroedinger"
2358 libschroedinger_encoder_deps="libschroedinger"
2359 libspeex_decoder_deps="libspeex"
2360 libspeex_encoder_deps="libspeex"
2361 libspeex_encoder_select="audio_frame_queue"
2362 libtheora_encoder_deps="libtheora"
2363 libtwolame_encoder_deps="libtwolame"
2364 libvo_aacenc_encoder_deps="libvo_aacenc"
2365 libvo_aacenc_encoder_select="audio_frame_queue"
2366 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2367 libvorbis_encoder_deps="libvorbis"
2368 libvorbis_encoder_select="audio_frame_queue"
2369 libvpx_vp8_decoder_deps="libvpx"
2370 libvpx_vp8_encoder_deps="libvpx"
2371 libvpx_vp9_decoder_deps="libvpx"
2372 libvpx_vp9_encoder_deps="libvpx"
2373 libwavpack_encoder_deps="libwavpack"
2374 libwavpack_encoder_select="audio_frame_queue"
2375 libwebp_encoder_deps="libwebp"
2376 libx262_encoder_deps="libx262"
2377 libx264_encoder_deps="libx264"
2378 libx265_encoder_deps="libx265"
2379 libxavs_encoder_deps="libxavs"
2380 libxvid_encoder_deps="libxvid mkstemp"
2381
2382 # demuxers / muxers
2383 ac3_demuxer_select="ac3_parser"
2384 asf_demuxer_select="riffdec"
2385 asf_muxer_select="riffenc"
2386 asf_stream_muxer_select="asf_muxer"
2387 avi_demuxer_select="iso_media riffdec"
2388 avi_muxer_select="riffenc"
2389 caf_demuxer_select="iso_media riffdec"
2390 dash_muxer_select="mp4_muxer"
2391 dirac_demuxer_select="dirac_parser"
2392 dv_demuxer_select="dvprofile"
2393 dv_muxer_select="dvprofile"
2394 dxa_demuxer_select="riffdec"
2395 eac3_demuxer_select="ac3_parser"
2396 f4v_muxer_select="mov_muxer"
2397 flac_demuxer_select="flac_parser"
2398 hds_muxer_select="flv_muxer"
2399 hls_muxer_select="mpegts_muxer"
2400 ipod_muxer_select="mov_muxer"
2401 ismv_muxer_select="mov_muxer"
2402 matroska_audio_muxer_select="matroska_muxer"
2403 matroska_demuxer_select="iso_media riffdec"
2404 matroska_demuxer_suggest="bzlib lzo zlib"
2405 matroska_muxer_select="iso_media riffenc"
2406 mmf_muxer_select="riffenc"
2407 mov_demuxer_select="iso_media riffdec"
2408 mov_demuxer_suggest="zlib"
2409 mov_muxer_select="iso_media riffenc rtpenc_chain"
2410 mp3_demuxer_select="mpegaudio_parser"
2411 mp3_muxer_select="mpegaudioheader"
2412 mp4_muxer_select="mov_muxer"
2413 mpegts_demuxer_select="iso_media"
2414 mpegts_muxer_select="adts_muxer latm_muxer"
2415 mpegtsraw_demuxer_select="mpegts_demuxer"
2416 mxf_d10_muxer_select="mxf_muxer"
2417 nut_muxer_select="riffenc"
2418 nuv_demuxer_select="riffdec"
2419 oga_muxer_select="ogg_muxer"
2420 ogg_demuxer_select="dirac_parse"
2421 opus_muxer_select="ogg_muxer"
2422 psp_muxer_select="mov_muxer"
2423 rtp_demuxer_select="sdp_demuxer"
2424 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2425 rtsp_demuxer_select="http_protocol rtpdec"
2426 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2427 sap_demuxer_select="sdp_demuxer"
2428 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2429 sdp_demuxer_select="rtpdec"
2430 smoothstreaming_muxer_select="ismv_muxer"
2431 spdif_demuxer_select="adts_header"
2432 spdif_muxer_select="adts_header"
2433 spx_muxer_select="ogg_muxer"
2434 swf_demuxer_suggest="zlib"
2435 tak_demuxer_select="tak_parser"
2436 tg2_muxer_select="mov_muxer"
2437 tgp_muxer_select="mov_muxer"
2438 w64_demuxer_select="wav_demuxer"
2439 wav_demuxer_select="riffdec"
2440 wav_muxer_select="riffenc"
2441 webm_muxer_select="iso_media riffenc"
2442 wtv_demuxer_select="mpegts_demuxer riffdec"
2443 xmv_demuxer_select="riffdec"
2444 xwma_demuxer_select="riffdec"
2445
2446 # indevs / outdevs
2447 alsa_indev_deps="alsa"
2448 alsa_outdev_deps="alsa"
2449 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2450 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2451 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2452 dv1394_indev_deps="dv1394"
2453 dv1394_indev_select="dv_demuxer"
2454 fbdev_indev_deps="linux_fb_h"
2455 jack_indev_deps="libjack"
2456 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2457 libcdio_indev_deps="libcdio"
2458 libdc1394_indev_deps="libdc1394"
2459 oss_indev_deps_any="sys_soundcard_h"
2460 oss_outdev_deps_any="sys_soundcard_h"
2461 pulse_indev_deps="libpulse"
2462 sndio_indev_deps="sndio"
2463 sndio_outdev_deps="sndio"
2464 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2465 vfwcap_indev_deps="vfw32 vfwcap_defines"
2466 xcbgrab_indev_deps="libxcb libxcb_shape"
2467 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2468
2469 # protocols
2470 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2471 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2472 ffrtmpcrypt_protocol_select="tcp_protocol"
2473 ffrtmphttp_protocol_conflict="librtmp_protocol"
2474 ffrtmphttp_protocol_select="http_protocol"
2475 gopher_protocol_select="network"
2476 http_protocol_select="tcp_protocol"
2477 http_protocol_suggest="zlib"
2478 httpproxy_protocol_select="tcp_protocol"
2479 httpproxy_protocol_suggest="zlib"
2480 https_protocol_select="tls_protocol"
2481 https_protocol_suggest="zlib"
2482 icecast_protocol_select="http_protocol"
2483 librtmp_protocol_deps="librtmp"
2484 librtmpe_protocol_deps="librtmp"
2485 librtmps_protocol_deps="librtmp"
2486 librtmpt_protocol_deps="librtmp"
2487 librtmpte_protocol_deps="librtmp"
2488 mmsh_protocol_select="http_protocol"
2489 mmst_protocol_select="network"
2490 rtmp_protocol_conflict="librtmp_protocol"
2491 rtmp_protocol_select="tcp_protocol"
2492 rtmp_protocol_suggest="zlib"
2493 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2494 rtmpe_protocol_suggest="zlib"
2495 rtmps_protocol_conflict="librtmp_protocol"
2496 rtmps_protocol_select="tls_protocol"
2497 rtmps_protocol_suggest="zlib"
2498 rtmpt_protocol_select="ffrtmphttp_protocol"
2499 rtmpt_protocol_suggest="zlib"
2500 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2501 rtmpte_protocol_suggest="zlib"
2502 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2503 rtmpts_protocol_suggest="zlib"
2504 rtp_protocol_select="udp_protocol"
2505 sctp_protocol_deps="struct_sctp_event_subscribe"
2506 sctp_protocol_select="network"
2507 srtp_protocol_select="rtp_protocol srtp"
2508 tcp_protocol_select="network"
2509 tls_protocol_deps_any="gnutls openssl"
2510 tls_protocol_select="tcp_protocol"
2511 udp_protocol_select="network"
2512 unix_protocol_deps="sys_un_h"
2513 unix_protocol_select="network"
2514
2515 # filters
2516 asyncts_filter_deps="avresample"
2517 blackframe_filter_deps="gpl"
2518 boxblur_filter_deps="gpl"
2519 bs2b_filter_deps="libbs2b"
2520 cropdetect_filter_deps="gpl"
2521 deinterlace_qsv_filter_deps="libmfx"
2522 deinterlace_vaapi_filter_deps="vaapi"
2523 delogo_filter_deps="gpl"
2524 drawtext_filter_deps="libfreetype"
2525 drawtext_filter_suggest="libfontconfig"
2526 frei0r_filter_deps="frei0r libdl"
2527 frei0r_src_filter_deps="frei0r libdl"
2528 hdcd_filter_deps="libhdcd"
2529 hqdn3d_filter_deps="gpl"
2530 interlace_filter_deps="gpl"
2531 movie_filter_deps="avcodec avformat"
2532 ocv_filter_deps="libopencv"
2533 overlay_qsv_filter_deps="libmfx"
2534 overlay_qsv_filter_select="qsvvpp"
2535 resample_filter_deps="avresample"
2536 scale_filter_deps="swscale"
2537 scale_qsv_filter_deps="libmfx"
2538 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2539 vpp_qsv_filter_deps="libmfx"
2540 vpp_qsv_filter_select="qsvvpp"
2541
2542 # examples
2543 decode_audio_example_deps="avcodec avutil"
2544 decode_video_example_deps="avcodec avutil"
2545 encode_audio_example_deps="avcodec avutil"
2546 encode_video_example_deps="avcodec avutil"
2547 filter_audio_example_deps="avfilter avutil"
2548 metadata_example_deps="avformat avutil"
2549 output_example_deps="avcodec avformat avresample avutil swscale"
2550 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2551 transcode_aac_example_deps="avcodec avformat avresample"
2552
2553 # EXTRALIBS_LIST
2554 cpu_init_extralibs="pthreads_extralibs"
2555 cws2fws_extralibs="zlib_extralibs"
2556
2557 # libraries, in linking order
2558 avcodec_deps="avutil"
2559 avcodec_select="null_bsf"
2560 avdevice_deps="avformat avcodec avutil"
2561 avfilter_deps="avutil"
2562 avformat_deps="avcodec avutil"
2563 avformat_suggest="network"
2564 avresample_deps="avutil"
2565 swscale_deps="avutil"
2566
2567 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2568 avdevice_extralibs="libm_extralibs"
2569 avformat_extralibs="libm_extralibs"
2570 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2571 avresample_extralibs="libm_extralibs"
2572 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"
2573 swscale_extralibs="libm_extralibs"
2574
2575 # programs
2576 avconv_deps="avcodec avfilter avformat avresample swscale"
2577 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2578                fps_filter null_filter resample_filter scale_filter
2579                trim_filter"
2580 avconv_suggest="psapi shell32"
2581 avplay_deps="avcodec avfilter avformat avresample sdl"
2582 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2583 avplay_suggest="shell32"
2584 avprobe_deps="avcodec avformat"
2585 avprobe_suggest="shell32"
2586
2587 # documentation
2588 pod2man_deps="doc"
2589 texi2html_deps="doc"
2590
2591 # default parameters
2592
2593 logfile="avbuild/config.log"
2594
2595 # installation paths
2596 prefix_default="/usr/local"
2597 bindir_default='${prefix}/bin'
2598 datadir_default='${prefix}/share/avconv'
2599 docdir_default='${prefix}/share/doc/libav'
2600 incdir_default='${prefix}/include'
2601 libdir_default='${prefix}/lib'
2602 mandir_default='${prefix}/share/man'
2603 shlibdir_default="$libdir_default"
2604
2605 # toolchain
2606 ar_default="ar"
2607 cc_default="gcc"
2608 host_cc_default="gcc"
2609 x86asmexe_default="nasm"
2610 ln_s="ln -s -f"
2611 nm_default="nm -g"
2612 pkg_config_default=pkg-config
2613 ranlib="ranlib"
2614 strip="strip"
2615 version_script='--version-script'
2616
2617 # machine
2618 arch_default=$(uname -m)
2619 cpu="generic"
2620 intrinsics="none"
2621
2622 # OS
2623 target_os_default=$(tolower $(uname -s))
2624 host_os=$target_os_default
2625
2626 # configurable options
2627 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2628
2629 enable asm
2630 enable debug
2631 enable doc
2632 enable faan faandct faanidct
2633 enable optimizations
2634 enable safe_bitstream_reader
2635 enable static
2636 enable swscale_alpha
2637 enable valgrind_backtrace
2638
2639 # By default, enable only those hwaccels that have no external dependencies.
2640 enable d3d11va dxva2 vda vdpau
2641
2642 # internal components are enabled by default
2643 enable $EXTRALIBS_LIST
2644
2645 # Avoid external, non-system, libraries getting enabled by dependency resolution
2646 disable $EXTERNAL_LIBRARY_LIST
2647
2648 # build settings
2649 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2650 LIBPREF="lib"
2651 LIBSUF=".a"
2652 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2653 SLIBPREF="lib"
2654 SLIBSUF=".so"
2655 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2656 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2657 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2658 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2659 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2660 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2661 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2662
2663 asflags_filter=echo
2664 cflags_filter=echo
2665 ldflags_filter=echo
2666
2667 AS_C='-c'
2668 AS_O='-o $@'
2669 CC_C='-c'
2670 CC_E='-E -o $@'
2671 CC_O='-o $@'
2672 OBJCC_C='-c'
2673 OBJCC_E='-E -o $@'
2674 OBJCC_O='-o $@'
2675 X86ASM_O='-o $@'
2676 LD_O='-o $@'
2677 LD_LIB='-l%'
2678 LD_PATH='-L'
2679 HOSTCC_C='-c'
2680 HOSTCC_E='-E -o $@'
2681 HOSTCC_O='-o $@'
2682 HOSTLD_O='-o $@'
2683
2684 host_extralibs='-lm'
2685 host_cflags_filter=echo
2686 host_ldflags_filter=echo
2687
2688 target_path='$(CURDIR)'
2689
2690 # since the object filename is not given with the -MM flag, the compiler
2691 # is only able to print the basename, and we must add the path ourselves
2692 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2693 DEPFLAGS='-MM'
2694
2695 mkdir -p avbuild
2696
2697 # find source path
2698 if test -f configure; then
2699     source_path=.
2700 else
2701     source_path=$(cd $(dirname "$0"); pwd)
2702     echo "$source_path" | grep -q '[[:blank:]]' &&
2703         die "Out of tree builds are impossible with whitespace in source path."
2704     test -e "$source_path/config.h" &&
2705         die "Out of tree builds are impossible with config.h in source dir."
2706 fi
2707
2708 for v in "$@"; do
2709     r=${v#*=}
2710     l=${v%"$r"}
2711     r=$(sh_quote "$r")
2712     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2713 done
2714
2715 find_things(){
2716     thing=$1
2717     pattern=$2
2718     file=$source_path/$3
2719     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2720 }
2721
2722 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2723 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2724 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2725 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2726 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2727 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2728 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2729 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2730 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2731
2732 find_things_extern(){
2733     thing=$1
2734     pattern=$2
2735     file=$source_path/$3
2736     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2737 }
2738
2739 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2740 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2741
2742 AVCODEC_COMPONENTS_LIST="
2743     $BSF_LIST
2744     $DECODER_LIST
2745     $ENCODER_LIST
2746     $HWACCEL_LIST
2747     $PARSER_LIST
2748 "
2749
2750 AVDEVICE_COMPONENTS_LIST="
2751     $INDEV_LIST
2752     $OUTDEV_LIST
2753 "
2754
2755 AVFILTER_COMPONENTS_LIST="
2756     $FILTER_LIST
2757 "
2758
2759 AVFORMAT_COMPONENTS_LIST="
2760     $DEMUXER_LIST
2761     $MUXER_LIST
2762     $PROTOCOL_LIST
2763 "
2764
2765 ALL_COMPONENTS="
2766     $AVCODEC_COMPONENTS_LIST
2767     $AVDEVICE_COMPONENTS_LIST
2768     $AVFILTER_COMPONENTS_LIST
2769     $AVFORMAT_COMPONENTS_LIST
2770 "
2771
2772 for n in $COMPONENT_LIST; do
2773     v=$(toupper ${n%s})_LIST
2774     eval enable \$$v
2775     eval ${n}_if_any="\$$v"
2776 done
2777
2778 enable $ARCH_EXT_LIST
2779
2780 die_unknown(){
2781     echo "Unknown option \"$1\"."
2782     echo "See $0 --help for available options."
2783     exit 1
2784 }
2785
2786 print_3_columns() {
2787     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2788 }
2789
2790 show_list() {
2791     suffix=_$1
2792     shift
2793     echo $* | sed s/$suffix//g | print_3_columns
2794     exit 0
2795 }
2796
2797 rand_list(){
2798     IFS=', '
2799     set -- $*
2800     unset IFS
2801     for thing; do
2802         comp=${thing%:*}
2803         prob=${thing#$comp}
2804         prob=${prob#:}
2805         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2806         echo "prob ${prob:-0.5}"
2807         printf '%s\n' $comp
2808     done
2809 }
2810
2811 do_random(){
2812     action=$1
2813     shift
2814     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2815     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2816 }
2817
2818 for opt do
2819     optval="${opt#*=}"
2820     case "$opt" in
2821         --extra-ldflags=*)
2822             add_ldflags $optval
2823         ;;
2824         --extra-ldexeflags=*)
2825             add_ldexeflags $optval
2826         ;;
2827         --extra-ldsoflags=*)
2828             add_ldsoflags $optval
2829         ;;
2830         --extra-libs=*)
2831             add_extralibs $optval
2832         ;;
2833         --disable-devices)
2834             disable $INDEV_LIST $OUTDEV_LIST
2835         ;;
2836         --enable-debug=*)
2837             debuglevel="$optval"
2838         ;;
2839         --disable-programs)
2840             disable $PROGRAM_LIST
2841         ;;
2842         --disable-everything)
2843             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2844         ;;
2845         --disable-all)
2846             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2847             disable $LIBRARY_LIST $PROGRAM_LIST doc
2848         ;;
2849         --enable-random|--disable-random)
2850             action=${opt%%-random}
2851             do_random ${action#--} $COMPONENT_LIST
2852         ;;
2853         --enable-random=*|--disable-random=*)
2854             action=${opt%%-random=*}
2855             do_random ${action#--} $optval
2856         ;;
2857         --enable-*=*|--disable-*=*)
2858             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2859             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2860             eval list=\$$(toupper $thing)_LIST
2861             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2862             $action $(filter "$name" $list)
2863         ;;
2864         --enable-avserver|--disable-avserver*)
2865             warn "avserver has been removed, the ${opt} option is only"\
2866                  "provided for compatibility and will be removed in the future"
2867         ;;
2868         --enable-yasm|--disable-yasm)
2869             warn "The ${opt} option is only provided for compatibility and will be\n"\
2870                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2871             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2872         ;;
2873         --enable-?*|--disable-?*)
2874             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2875             if is_in $option $COMPONENT_LIST; then
2876                 test $action = disable && action=unset
2877                 eval $action \$$(toupper ${option%s})_LIST
2878             elif is_in $option $CMDLINE_SELECT; then
2879                 $action $option
2880             else
2881                 die_unknown $opt
2882             fi
2883         ;;
2884         --list-*)
2885             NAME="${opt#--list-}"
2886             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2887             NAME=${NAME%s}
2888             eval show_list $NAME \$$(toupper $NAME)_LIST
2889         ;;
2890         --help|-h) show_help
2891         ;;
2892         --quiet|-q) quiet=yes
2893         ;;
2894         *)
2895             optname="${opt%%=*}"
2896             optname="${optname#--}"
2897             optname=$(echo "$optname" | sed 's/-/_/g')
2898             if is_in $optname $CMDLINE_SET; then
2899                 eval $optname='$optval'
2900             elif is_in $optname $CMDLINE_APPEND; then
2901                 append $optname "$optval"
2902             else
2903                 die_unknown $opt
2904             fi
2905         ;;
2906     esac
2907 done
2908
2909 for e in $env; do
2910     eval "export $e"
2911 done
2912
2913 disabled logging && logfile=/dev/null
2914
2915 # Die early if licensing-related configure options are incompatible.
2916 die_license_disabled() {
2917     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2918 }
2919
2920 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2921 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2922 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2923
2924 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2925
2926 enabled_all gnutls openssl &&
2927     die "GnuTLS and OpenSSL must not be enabled at the same time."
2928
2929 # Disable all the library-specific components if the library itself
2930 # is disabled, see AVCODEC_LIST and following _LIST variables.
2931
2932 disable_components(){
2933     disabled ${1} && disable $(
2934         eval components="\$$(toupper ${1})_COMPONENTS"
2935         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2936     )
2937 }
2938
2939 map 'disable_components $v' $LIBRARY_LIST
2940
2941 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2942 set >> $logfile
2943
2944 case "$toolchain" in
2945     *-asan)
2946         cc_default="${toolchain%-asan}"
2947         add_cflags  -fsanitize=address
2948         add_ldflags -fsanitize=address
2949     ;;
2950     *-msan)
2951         cc_default="${toolchain%-msan}"
2952         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2953         add_ldflags -fsanitize=memory
2954     ;;
2955     *-tsan)
2956         cc_default="${toolchain%-tsan}"
2957         add_cflags  -fsanitize=thread -fPIE
2958         add_ldflags -fsanitize=thread -pie
2959         case "$toolchain" in
2960             gcc-tsan)
2961                 add_cflags  -fPIC
2962                 add_ldflags -fPIC
2963                 ;;
2964         esac
2965     ;;
2966     *-usan)
2967         cc_default="${toolchain%-usan}"
2968         add_cflags  -fsanitize=undefined
2969         add_ldflags -fsanitize=undefined
2970         case "$toolchain" in
2971             clang-usan)
2972                 add_cflags -O1
2973                 ;;
2974         esac
2975     ;;
2976     valgrind-*)
2977         target_exec_default="valgrind"
2978         case "$toolchain" in
2979             valgrind-massif)
2980                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2981                 ;;
2982             valgrind-memcheck)
2983                 target_exec_args="--track-origins=yes --leak-check=full"
2984                 ;;
2985         esac
2986     ;;
2987     msvc)
2988         # Check whether the current MSVC version needs the C99 converter.
2989         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2990         # support enough of C99 to build libav. Default to the new
2991         # behaviour if the regexp was unable to match anything, since this
2992         # successfully parses the version number of existing supported
2993         # versions that require the converter (MSVC 2010 and 2012).
2994         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2995         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2996             cc_default="cl"
2997         else
2998             cc_default="c99wrap cl"
2999         fi
3000         ld_default="$source_path/compat/windows/mslink"
3001         nm_default="dumpbin -symbols"
3002         ar_default="lib"
3003         case "$arch" in
3004         arm*)
3005             as_default="armasm"
3006             ;;
3007         esac
3008         target_os_default="win32"
3009         # Use a relative path for TMPDIR. This makes sure all the
3010         # ffconf temp files are written with a relative path, avoiding
3011         # issues with msys/win32 path conversion for MSVC parameters
3012         # such as -Fo<file> or -out:<file>.
3013         TMPDIR=.
3014     ;;
3015     icl)
3016         cc_default="icl"
3017         ld_default="xilink"
3018         nm_default="dumpbin -symbols"
3019         ar_default="xilib"
3020         target_os_default="win32"
3021         TMPDIR=.
3022     ;;
3023     gcov)
3024         add_cflags  -fprofile-arcs -ftest-coverage
3025         add_ldflags -fprofile-arcs -ftest-coverage
3026     ;;
3027     llvm-cov)
3028         add_cflags -fprofile-arcs -ftest-coverage
3029         add_ldflags --coverage
3030     ;;
3031     hardened)
3032         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3033         add_cflags   -fno-strict-overflow -fstack-protector-all
3034         add_ldflags  -Wl,-z,relro -Wl,-z,now
3035     ;;
3036     ?*)
3037         die "Unknown toolchain $toolchain"
3038     ;;
3039 esac
3040
3041 test -n "$cross_prefix" && enable cross_compile
3042
3043 if enabled cross_compile; then
3044     test -n "$arch" && test -n "$target_os" ||
3045         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3046 fi
3047
3048 ar_default="${cross_prefix}${ar_default}"
3049 cc_default="${cross_prefix}${cc_default}"
3050 objcc_default="${cross_prefix}${objcc_default}"
3051 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3052 nm_default="${cross_prefix}${nm_default}"
3053 pkg_config_default="${cross_prefix}${pkg_config_default}"
3054 ranlib="${cross_prefix}${ranlib}"
3055 strip="${cross_prefix}${strip}"
3056
3057 sysinclude_default="${sysroot}/usr/include"
3058
3059 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3060 enabled cross_compile || host_cc_default=$cc
3061 set_default host_cc
3062
3063 if ! $pkg_config --version >/dev/null 2>&1; then
3064     warn "$pkg_config not found, library detection may fail."
3065     pkg_config=false
3066 fi
3067
3068 exesuf() {
3069     case $1 in
3070         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3071     esac
3072 }
3073
3074 EXESUF=$(exesuf $target_os)
3075 HOSTEXESUF=$(exesuf $host_os)
3076
3077 # set temporary file name
3078 : ${TMPDIR:=$TEMPDIR}
3079 : ${TMPDIR:=$TMP}
3080 : ${TMPDIR:=/tmp}
3081
3082 if ! check_cmd mktemp -u XXXXXX; then
3083     # simple replacement for missing mktemp
3084     # NOT SAFE FOR GENERAL USE
3085     mktemp(){
3086         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3087         echo "$tmpname"
3088         mkdir "$tmpname"
3089     }
3090 fi
3091
3092 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3093     die "Unable to create temporary directory in $TMPDIR."
3094
3095 tmpfile(){
3096     tmp="${AVTMPDIR}/test"$2
3097     (set -C; exec > $tmp) 2> /dev/null ||
3098         die "Unable to create temporary file in $AVTMPDIR."
3099     eval $1=$tmp
3100 }
3101
3102 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3103 trap 'exit 2' INT
3104
3105 tmpfile TMPASM .asm
3106 tmpfile TMPC   .c
3107 tmpfile TMPE   $EXESUF
3108 tmpfile TMPH   .h
3109 tmpfile TMPO   .o
3110 tmpfile TMPS   .S
3111 tmpfile TMPSH  .sh
3112 tmpfile TMPV   .ver
3113
3114 unset -f mktemp
3115
3116 chmod +x $TMPE
3117
3118 # make sure we can execute files in $TMPDIR
3119 cat > $TMPSH 2>> $logfile <<EOF
3120 #! /bin/sh
3121 EOF
3122 chmod +x $TMPSH >> $logfile 2>&1
3123 if ! $TMPSH >> $logfile 2>&1; then
3124     cat <<EOF
3125 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3126 variable to another directory and make sure that it is not mounted noexec.
3127 EOF
3128     die "Sanity test failed."
3129 fi
3130
3131 armasm_flags(){
3132     for flag; do
3133         case $flag in
3134             # Filter out MSVC cl.exe options from cflags that shouldn't
3135             # be passed to gas-preprocessor
3136             -M[TD]*)                                            ;;
3137             *)                  echo $flag                      ;;
3138         esac
3139    done
3140 }
3141
3142 cparser_flags(){
3143     for flag; do
3144         case $flag in
3145             -Wno-switch)             echo -Wno-switch-enum ;;
3146             -Wno-format-zero-length) ;;
3147             -Wdisabled-optimization) ;;
3148             -Wno-pointer-sign)       echo -Wno-other ;;
3149             *)                       echo $flag ;;
3150         esac
3151     done
3152 }
3153
3154 msvc_common_flags(){
3155     for flag; do
3156         case $flag in
3157             # In addition to specifying certain flags under the compiler
3158             # specific filters, they must be specified here as well or else the
3159             # generic catch all at the bottom will print the original flag.
3160             -Wall)                ;;
3161             -Wextra)              ;;
3162             -std=c99)             ;;
3163             # Common flags
3164             -fomit-frame-pointer) ;;
3165             -g)                   echo -Z7 ;;
3166             -fno-math-errno)      ;;
3167             -fno-common)          ;;
3168             -fno-signed-zeros)    ;;
3169             -fPIC)                ;;
3170             -mthumb)              ;;
3171             -march=*)             ;;
3172             -lz)                  echo zlib.lib ;;
3173             -lx264)               echo libx264.lib ;;
3174             -l*)                  echo ${flag#-l}.lib ;;
3175             -L*)                  echo -libpath:${flag#-L} ;;
3176             *)                    echo $flag ;;
3177         esac
3178     done
3179 }
3180
3181 msvc_flags(){
3182     msvc_common_flags "$@"
3183     for flag; do
3184         case $flag in
3185             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3186                                        -wd4554 ;;
3187             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3188                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3189                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3190                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3191         esac
3192     done
3193 }
3194
3195 icl_flags(){
3196     msvc_common_flags "$@"
3197     for flag; do
3198         case $flag in
3199             # Despite what Intel's documentation says -Wall, which is supported
3200             # on Windows, does enable remarks so disable them here.
3201             -Wall)                echo $flag -Qdiag-disable:remark ;;
3202             -std=c99)             echo -Qstd=c99 ;;
3203         esac
3204     done
3205 }
3206
3207 pgi_flags(){
3208     for flag; do
3209         case $flag in
3210             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3211             -fomit-frame-pointer) echo -Mnoframe ;;
3212             -g)                   echo -gopt ;;
3213             *)                    echo $flag ;;
3214         esac
3215     done
3216 }
3217
3218 suncc_flags(){
3219     for flag; do
3220         case $flag in
3221             -march=*|-mcpu=*)
3222                 case "${flag#*=}" in
3223                     native)                   echo -xtarget=native       ;;
3224                     v9|niagara)               echo -xarch=sparc          ;;
3225                     ultrasparc)               echo -xarch=sparcvis       ;;
3226                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3227                     i586|pentium)             echo -xchip=pentium        ;;
3228                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3229                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3230                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3231                     pentium4*)          echo -xtarget=pentium4           ;;
3232                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3233                     *-sse3)             echo -xarch=sse3                 ;;
3234                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3235                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3236                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3237                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3238                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3239                     k8|opteron|athlon64|athlon-fx)
3240                                                echo -xarch=sse2a         ;;
3241                     athlon*)                   echo -xarch=pentium_proa  ;;
3242                 esac
3243                 ;;
3244             -std=c99)             echo -xc99              ;;
3245             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3246             -fPIC)                echo -KPIC -xcode=pic32 ;;
3247             -W*,*)                echo $flag              ;;
3248             -f*-*|-W*|-mimpure-text)                      ;;
3249             -shared)              echo -G                 ;;
3250             *)                    echo $flag              ;;
3251         esac
3252     done
3253 }
3254
3255 tms470_flags(){
3256     for flag; do
3257         case $flag in
3258             -march=*|-mcpu=*)
3259                 case "${flag#*=}" in
3260                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3261                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3262                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3263                     armv6*|arm11*)          echo -mv=6   ;;
3264                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3265                                             echo -mv=5e  ;;
3266                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3267                 esac
3268                 ;;
3269             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3270             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3271             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3272             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3273             -msoft-float)   echo --float_support=vfplib       ;;
3274             -O[0-3]|-mf=*)  echo $flag                        ;;
3275             -g)             echo -g -mn                       ;;
3276             -pds=*)         echo $flag                        ;;
3277             -D*|-I*)        echo $flag                        ;;
3278             --gcc|--abi=*)  echo $flag                        ;;
3279             -me)            echo $flag                        ;;
3280         esac
3281     done
3282 }
3283
3284 probe_cc(){
3285     pfx=$1
3286     _cc=$2
3287
3288     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3289     unset _ld_o _ldflags _ld_lib _ld_path
3290     unset _depflags _DEPCMD _DEPFLAGS
3291     _flags_filter=echo
3292
3293     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3294         _type=llvm_gcc
3295         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3296         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3297         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3298         _cflags_speed='-O3'
3299         _cflags_size='-Os'
3300     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3301         _type=gcc
3302         gcc_version=$($_cc --version | head -n1)
3303         gcc_basever=$($_cc -dumpversion)
3304         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3305         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3306         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3307         if ! $_cc -dumpversion | grep -q '^2\.'; then
3308             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3309         fi
3310         _cflags_speed='-O3'
3311         _cflags_size='-Os'
3312     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3313         _type=icc
3314         _ident=$($_cc --version | head -n1)
3315         _depflags='-MMD'
3316         _cflags_speed='-O3'
3317         _cflags_size='-Os'
3318         _cflags_noopt='-O1'
3319     elif $_cc -v 2>&1 | grep -q xlc; then
3320         _type=xlc
3321         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3322         _cflags_speed='-O5'
3323         _cflags_size='-O5 -qcompact'
3324     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3325         test -d "$sysroot" || die "No valid sysroot specified."
3326         _type=armcc
3327         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3328         armcc_conf="$PWD/armcc.conf"
3329         $_cc --arm_linux_configure                 \
3330              --arm_linux_config_file="$armcc_conf" \
3331              --configure_sysroot="$sysroot"        \
3332              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3333              die "Error creating armcc configuration file."
3334         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3335         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3336         as_default="${cross_prefix}gcc"
3337         _depflags='-MMD'
3338         _cflags_speed='-O3'
3339         _cflags_size='-Os'
3340     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3341         _type=tms470
3342         _ident=$($_cc -version | head -n1 | tr -s ' ')
3343         _flags='--gcc --abi=eabi -me'
3344         _cc_e='-ppl -fe=$@'
3345         _cc_o='-fe=$@'
3346         _depflags='-ppa -ppd=$(@:.o=.d)'
3347         _cflags_speed='-O3 -mf=5'
3348         _cflags_size='-O3 -mf=2'
3349         _flags_filter=tms470_flags
3350     elif $_cc -v 2>&1 | grep -q clang; then
3351         _type=clang
3352         _ident=$($_cc --version 2>/dev/null | head -n1)
3353         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3354         _cflags_speed='-O3'
3355         _cflags_size='-Os'
3356     elif $_cc -V 2>&1 | grep -q Sun; then
3357         _type=suncc
3358         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3359         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3360         _DEPFLAGS='-xM1 -xc99'
3361         _ldflags='-std=c99'
3362         _cflags_speed='-O5'
3363         _cflags_size='-O5 -xspace'
3364         _flags_filter=suncc_flags
3365     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3366         _type=pathscale
3367         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3368         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3369         _cflags_speed='-O2'
3370         _cflags_size='-Os'
3371         _flags_filter='filter_out -Wdisabled-optimization'
3372     elif $_cc -v 2>&1 | grep -q Open64; then
3373         _type=open64
3374         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3375         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3376         _cflags_speed='-O2'
3377         _cflags_size='-Os'
3378         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3379     elif $_cc -V 2>&1 | grep -q Portland; then
3380         _type=pgi
3381         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3382         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3383         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3384         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3385         _cflags_noopt="-O1"
3386         _flags_filter=pgi_flags
3387     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3388         _type=armasm
3389         _ident=$($_cc | head -n1)
3390         # 4509: "This form of conditional instruction is deprecated"
3391         _flags="-nologo -ignore 4509"
3392         _flags_filter=armasm_flags
3393     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3394         _type=msvc
3395         _ident=$($_cc 2>&1 | head -n1)
3396         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3397         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3398         _cflags_speed="-O2"
3399         _cflags_size="-O1"
3400         _cflags_noopt="-O1"
3401         if $_cc -nologo- 2>&1 | grep -q Linker; then
3402             _ld_o='-out:$@'
3403         else
3404             _ld_o='-Fe$@'
3405         fi
3406         _cc_o='-Fo$@'
3407         _cc_e='-P -Fi$@'
3408         _flags_filter=msvc_flags
3409         _ld_lib='lib%.a'
3410         _ld_path='-libpath:'
3411         _flags='-nologo'
3412     elif $_cc 2>&1 | grep -q Intel; then
3413         _type=icl
3414         _ident=$($_cc 2>&1 | head -n1)
3415         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3416         # Not only is O3 broken on 13.x+ but it is slower on all previous
3417         # versions (tested) as well.
3418         _cflags_speed="-O2"
3419         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3420         if $_cc 2>&1 | grep -q Linker; then
3421             _ld_o='-out:$@'
3422         else
3423             _ld_o='-Fe$@'
3424         fi
3425         _cc_o='-Fo$@'
3426         _cc_e='-P'
3427         _flags_filter=icl_flags
3428         _ld_lib='lib%.a'
3429         _ld_path='-libpath:'
3430         # -Qdiag-error to make icl error when seeing certain unknown arguments
3431         _flags='-nologo -Qdiag-error:4044,10157'
3432         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3433         # with MSVC which enables it by default.
3434         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3435     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3436         # lld can emulate multiple different linkers; in ms link.exe mode,
3437         # the -? parameter gives the help output which contains an identifyable
3438         # string, while it gives an error in other modes.
3439         _type=lld-link
3440         # The link.exe mode doesn't have a switch for getting the version,
3441         # but we can force it back to gnu mode and get the version from there.
3442         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3443         _ld_o='-out:$@'
3444         _flags_filter=msvc_flags
3445         _ld_lib='lib%.a'
3446         _ld_path='-libpath:'
3447     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3448         _type=cparser
3449         _ident=$($_cc --version | head -n1)
3450         _depflags='-MMD'
3451         _cflags_speed='-O4'
3452         _cflags_size='-O2'
3453         _flags_filter=cparser_flags
3454     fi
3455
3456     eval ${pfx}_type=\$_type
3457     eval ${pfx}_ident=\$_ident
3458 }
3459
3460 set_ccvars(){
3461     eval ${1}_C=\${_cc_c-\${${1}_C}}
3462     eval ${1}_E=\${_cc_e-\${${1}_E}}
3463     eval ${1}_O=\${_cc_o-\${${1}_O}}
3464
3465     if [ -n "$_depflags" ]; then
3466         eval ${1}_DEPFLAGS=\$_depflags
3467     else
3468         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3469         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3470         eval DEP${1}FLAGS=\$_flags
3471     fi
3472 }
3473
3474 probe_cc cc "$cc"
3475 cflags_filter=$_flags_filter
3476 cflags_speed=$_cflags_speed
3477 cflags_size=$_cflags_size
3478 cflags_noopt=$_cflags_noopt
3479 add_cflags $_flags $_cflags
3480 cc_ldflags=$_ldflags
3481 set_ccvars CC
3482
3483 probe_cc hostcc "$host_cc"
3484 host_cflags_filter=$_flags_filter
3485 host_cflags_speed=$_cflags_speed
3486 add_host_cflags  $_flags $_cflags
3487 set_ccvars HOSTCC
3488
3489 test -n "$cc_type" && enable $cc_type ||
3490     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3491
3492 : ${as_default:=$cc}
3493 : ${objcc_default:=$cc}
3494 : ${dep_cc_default:=$cc}
3495 : ${ld_default:=$cc}
3496 : ${host_ld_default:=$host_cc}
3497 set_default ar as objcc dep_cc ld host_ld
3498
3499 probe_cc as "$as"
3500 asflags_filter=$_flags_filter
3501 add_asflags $_flags $_cflags
3502 set_ccvars AS
3503
3504 probe_cc objcc "$objcc"
3505 objcflags_filter=$_flags_filter
3506 add_objcflags $_flags $_cflags
3507 set_ccvars OBJC
3508
3509 probe_cc ld "$ld"
3510 ldflags_filter=$_flags_filter
3511 add_ldflags $_flags $_ldflags
3512 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3513 LD_O=${_ld_o-$LD_O}
3514 LD_LIB=${_ld_lib-$LD_LIB}
3515 LD_PATH=${_ld_path-$LD_PATH}
3516
3517 probe_cc hostld "$host_ld"
3518 host_ldflags_filter=$_flags_filter
3519 add_host_ldflags $_flags $_ldflags
3520 HOSTLD_O=${_ld_o-$HOSTLD_O}
3521
3522 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3523     probe_cc depcc "$dep_cc"
3524     CCDEP=${_DEPCMD:-$DEPCMD}
3525     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3526     DEPCCFLAGS=$_flags
3527 fi
3528
3529 if $ar 2>&1 | grep -q Microsoft; then
3530     arflags="-nologo"
3531     ar_o='-out:$@'
3532 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3533     arflags="rq"
3534     ar_o='$@'
3535 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3536     arflags='-Xany -r -c'
3537     ar_o='$@'
3538 else
3539     arflags="rc"
3540     ar_o='$@'
3541 fi
3542
3543 add_cflags $extra_cflags
3544 add_objcflags $extra_objcflags
3545 add_asflags $extra_cflags
3546
3547 if test -n "$sysroot"; then
3548     case "$cc_type" in
3549         gcc|llvm_gcc|clang)
3550             add_cppflags --sysroot="$sysroot"
3551             add_ldflags --sysroot="$sysroot"
3552         ;;
3553         tms470)
3554             add_cppflags -I"$sysinclude"
3555             add_ldflags  --sysroot="$sysroot"
3556         ;;
3557     esac
3558 fi
3559
3560 if test "$cpu" = host; then
3561     enabled cross_compile &&
3562         die "--cpu=host makes no sense when cross-compiling."
3563
3564     case "$cc_type" in
3565         gcc|llvm_gcc)
3566             check_native(){
3567                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3568                 sed -n "/cc1.*$1=/{
3569                             s/.*$1=\\([^ ]*\\).*/\\1/
3570                             p
3571                             q
3572                         }" $TMPE
3573             }
3574             cpu=$(check_native -march || check_native -mcpu)
3575         ;;
3576     esac
3577
3578     test "${cpu:-host}" = host &&
3579         die "--cpu=host not supported with compiler $cc"
3580 fi
3581
3582 # Deal with common $arch aliases
3583 case "$arch" in
3584     aarch64|arm64)
3585         arch="aarch64"
3586     ;;
3587     arm*)
3588         arch="arm"
3589     ;;
3590     mips*|IP*)
3591         case "$arch" in
3592         *el)
3593             add_cppflags -EL
3594             add_ldflags -EL
3595         ;;
3596         *eb)
3597             add_cppflags -EB
3598             add_ldflags -EB
3599         ;;
3600         esac
3601         arch="mips"
3602     ;;
3603     parisc*|hppa*)
3604         arch="parisc"
3605     ;;
3606     "Power Macintosh"|ppc*|powerpc*)
3607         arch="ppc"
3608     ;;
3609     s390|s390x)
3610         arch="s390"
3611     ;;
3612     sh4|sh)
3613         arch="sh4"
3614     ;;
3615     sun4u|sparc*)
3616         arch="sparc"
3617     ;;
3618     tilegx|tile-gx)
3619         arch="tilegx"
3620     ;;
3621     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3622         arch="x86"
3623     ;;
3624 esac
3625
3626 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3627 enable $arch
3628
3629 # Add processor-specific flags
3630 if enabled aarch64; then
3631
3632     case $cpu in
3633         armv*)
3634             cpuflags="-march=$cpu"
3635         ;;
3636         *)
3637             cpuflags="-mcpu=$cpu"
3638         ;;
3639     esac
3640
3641 elif enabled alpha; then
3642
3643     cpuflags="-mcpu=$cpu"
3644
3645 elif enabled arm; then
3646
3647     check_arm_arch() {
3648         check_cpp_condition stddef.h \
3649             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3650             $cpuflags
3651     }
3652
3653     probe_arm_arch() {
3654         if   check_arm_arch 4;        then echo armv4
3655         elif check_arm_arch 4T;       then echo armv4t
3656         elif check_arm_arch 5;        then echo armv5
3657         elif check_arm_arch 5E;       then echo armv5e
3658         elif check_arm_arch 5T;       then echo armv5t
3659         elif check_arm_arch 5TE;      then echo armv5te
3660         elif check_arm_arch 5TEJ;     then echo armv5te
3661         elif check_arm_arch 6;        then echo armv6
3662         elif check_arm_arch 6J;       then echo armv6j
3663         elif check_arm_arch 6K;       then echo armv6k
3664         elif check_arm_arch 6Z;       then echo armv6z
3665         elif check_arm_arch 6ZK;      then echo armv6zk
3666         elif check_arm_arch 6T2;      then echo armv6t2
3667         elif check_arm_arch 7;        then echo armv7
3668         elif check_arm_arch 7A  7_A;  then echo armv7-a
3669         elif check_arm_arch 7S;       then echo armv7-a
3670         elif check_arm_arch 7R  7_R;  then echo armv7-r
3671         elif check_arm_arch 7M  7_M;  then echo armv7-m
3672         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3673         elif check_arm_arch 8A  8_A;  then echo armv8-a
3674         fi
3675     }
3676
3677     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3678
3679     case $cpu in
3680         armv*)
3681             cpuflags="-march=$cpu"
3682             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3683         ;;
3684         *)
3685             cpuflags="-mcpu=$cpu"
3686             case $cpu in
3687                 cortex-a*)                               subarch=armv7a  ;;
3688                 cortex-r*)                               subarch=armv7r  ;;
3689                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3690                 arm11*)                                  subarch=armv6   ;;
3691                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3692                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3693                 *)                             subarch=$(probe_arm_arch) ;;
3694             esac
3695         ;;
3696     esac
3697
3698     case "$subarch" in
3699         armv5t*)    enable fast_clz                ;;
3700         armv[6-8]*) enable fast_clz fast_unaligned ;;
3701     esac
3702
3703 elif enabled avr32; then
3704
3705     case $cpu in
3706         ap7[02]0[0-2])
3707             subarch="avr32_ap"
3708             cpuflags="-mpart=$cpu"
3709         ;;
3710         ap)
3711             subarch="avr32_ap"
3712             cpuflags="-march=$cpu"
3713         ;;
3714         uc3[ab]*)
3715             subarch="avr32_uc"
3716             cpuflags="-mcpu=$cpu"
3717         ;;
3718         uc)
3719             subarch="avr32_uc"
3720             cpuflags="-march=$cpu"
3721         ;;
3722     esac
3723
3724 elif enabled bfin; then
3725
3726     cpuflags="-mcpu=$cpu"
3727
3728 elif enabled mips; then
3729
3730     cpuflags="-march=$cpu"
3731
3732 elif enabled ppc; then
3733
3734     disable ldbrx
3735
3736     case $(tolower $cpu) in
3737         601|ppc601|powerpc601)
3738             cpuflags="-mcpu=601"
3739             disable altivec
3740         ;;
3741         603*|ppc603*|powerpc603*)
3742             cpuflags="-mcpu=603"
3743             disable altivec
3744         ;;
3745         604*|ppc604*|powerpc604*)
3746             cpuflags="-mcpu=604"
3747             disable altivec
3748         ;;
3749         g3|75*|ppc75*|powerpc75*)
3750             cpuflags="-mcpu=750"
3751             disable altivec
3752         ;;
3753         g4|745*|ppc745*|powerpc745*)
3754             cpuflags="-mcpu=7450"
3755             disable vsx
3756         ;;
3757         74*|ppc74*|powerpc74*)
3758             cpuflags="-mcpu=7400"
3759             disable vsx
3760         ;;
3761         g5|970|ppc970|powerpc970)
3762             cpuflags="-mcpu=970"
3763             disable vsx
3764         ;;
3765         power[3-6]*)
3766             cpuflags="-mcpu=$cpu"
3767             disable vsx
3768         ;;
3769         power[7-8]*)
3770             cpuflags="-mcpu=$cpu"
3771             enable ldbrx
3772         ;;
3773         cell)
3774             cpuflags="-mcpu=cell"
3775             enable ldbrx
3776             disable vsx
3777         ;;
3778         e500mc)
3779             cpuflags="-mcpu=e500mc"
3780             disable altivec
3781         ;;
3782         e500v2)
3783             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3784             disable altivec
3785             disable dcbzl
3786         ;;
3787         e500)
3788             cpuflags="-mcpu=8540 -mhard-float"
3789             disable altivec
3790             disable dcbzl
3791         ;;
3792     esac
3793
3794 elif enabled sparc; then
3795
3796     case $cpu in
3797         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3798             cpuflags="-mcpu=$cpu"
3799         ;;
3800         ultrasparc*|niagara[234])
3801             cpuflags="-mcpu=$cpu"
3802         ;;
3803     esac
3804
3805 elif enabled x86; then
3806
3807     case $cpu in
3808         i[345]86|pentium)
3809             cpuflags="-march=$cpu"
3810             disable i686
3811             disable mmx
3812         ;;
3813         # targets that do NOT support nopl and conditional mov (cmov)
3814         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3815             cpuflags="-march=$cpu"
3816             disable i686
3817         ;;
3818         # targets that do support nopl and conditional mov (cmov)
3819         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3820             cpuflags="-march=$cpu"
3821             enable i686
3822             enable fast_cmov
3823         ;;
3824         # targets that do support conditional mov but on which it's slow
3825         pentium4|pentium4m|prescott|nocona)
3826             cpuflags="-march=$cpu"
3827             enable i686
3828             disable fast_cmov
3829         ;;
3830     esac
3831
3832 fi
3833
3834 if [ "$cpu" != generic ]; then
3835     add_cflags  $cpuflags
3836     add_asflags $cpuflags
3837     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3838 fi
3839
3840 # compiler sanity check
3841 check_exec <<EOF
3842 int main(void){ return 0; }
3843 EOF
3844 if test "$?" != 0; then
3845     echo "$cc is unable to create an executable file."
3846     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3847         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3848         echo "Only do this if you know what cross compiling means."
3849     fi
3850     die "C compiler test failed."
3851 fi
3852
3853 add_cppflags -D_ISOC99_SOURCE
3854
3855 # some compilers silently accept -std=c11, so we also need to check that the
3856 # version macro is defined properly
3857 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3858     add_cflags -std=c11 ||
3859     check_cflags -std=c99
3860
3861 check_cppflags -D_FILE_OFFSET_BITS=64
3862 check_cppflags -D_LARGEFILE_SOURCE
3863
3864 add_host_cppflags -D_ISOC99_SOURCE
3865 check_host_cflags -std=c99
3866 check_host_cflags -Wall
3867 check_host_cflags $host_cflags_speed
3868
3869 check_64bit(){
3870     arch32=$1
3871     arch64=$2
3872     expr=$3
3873     check_code cc "" "int test[2*($expr) - 1]" &&
3874         subarch=$arch64 || subarch=$arch32
3875 }
3876
3877 case "$arch" in
3878     aarch64|alpha|ia64)
3879         spic=$shared
3880     ;;
3881     mips)
3882         check_64bit mips mips64 '_MIPS_SIM > 1'
3883         spic=$shared
3884     ;;
3885     parisc)
3886         check_64bit parisc parisc64 'sizeof(void *) > 4'
3887         spic=$shared
3888     ;;
3889     ppc)
3890         check_64bit ppc ppc64 'sizeof(void *) > 4'
3891         spic=$shared
3892     ;;
3893     s390)
3894         check_64bit s390 s390x 'sizeof(void *) > 4'
3895         spic=$shared
3896     ;;
3897     sparc)
3898         check_64bit sparc sparc64 'sizeof(void *) > 4'
3899         spic=$shared
3900     ;;
3901     x86)
3902         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3903         if test "$subarch" = "x86_64"; then
3904             spic=$shared
3905         fi
3906     ;;
3907 esac
3908
3909 enable $subarch
3910 enabled spic && enable_weak pic
3911
3912 enabled x86_64 && objformat=elf64 || objformat="elf32"
3913
3914 # OS specific
3915 case $target_os in
3916     aix)
3917         SHFLAGS=-shared
3918         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3919         enabled shared && add_ldflags -Wl,-brtl
3920         ;;
3921     android)
3922         disable symver
3923         enable section_data_rel_ro
3924         SLIB_INSTALL_NAME='$(SLIBNAME)'
3925         SLIB_INSTALL_LINKS=
3926         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3927         ;;
3928     haiku)
3929         prefix_default="/boot/common"
3930         network_extralibs="-lnetwork"
3931         host_extralibs=
3932         ;;
3933     sunos)
3934         SHFLAGS='-shared -Wl,-h,$$(@F)'
3935         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3936         network_extralibs="-lsocket -lnsl"
3937         # When using suncc to build, the Solaris linker will mark
3938         # an executable with each instruction set encountered by
3939         # the Solaris assembler.  As our libraries contain their own
3940         # guards for processor-specific code, instead suppress
3941         # generation of the HWCAPS ELF section on Solaris x86 only.
3942         enabled_all suncc x86 &&
3943             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3944             add_ldflags -Wl,-M,mapfile
3945         nm_default='nm -P -g'
3946         version_script='-M'
3947         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3948         ;;
3949     netbsd)
3950         disable symver
3951         oss_indev_extralibs="-lossaudio"
3952         oss_outdev_extralibs="-lossaudio"
3953         ;;
3954     openbsd|bitrig)
3955         disable symver
3956         SHFLAGS='-shared'
3957         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3958         SLIB_INSTALL_LINKS=
3959         oss_indev_extralibs="-lossaudio"
3960         oss_outdev_extralibs="-lossaudio"
3961         ;;
3962     dragonfly)
3963         disable symver
3964         ;;
3965     freebsd)
3966         ;;
3967     bsd/os)
3968         add_extralibs -lpoll -lgnugetopt
3969         ;;
3970     darwin)
3971         enabled ppc && add_asflags -force_cpusubtype_ALL
3972         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3973         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3974         add_ldflags -Wl,-dynamic,-search_paths_first
3975         check_cflags -Werror=partial-availability
3976         SLIBSUF=".dylib"
3977         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3978         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3979         enabled x86_64 && objformat="macho64" || objformat="macho32"
3980         enabled_any pic shared ||
3981             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3982         check_header dispatch/dispatch.h &&
3983             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3984         if test -n "$sysroot"; then
3985             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3986             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3987         fi
3988         ;;
3989     msys*)
3990         die "Native MSYS builds are discouraged, please use the MINGW environment."
3991         ;;
3992     mingw32*|mingw64*)
3993         target_os=mingw32
3994         LIBTARGET=i386
3995         if enabled x86_64; then
3996             LIBTARGET="i386:x86-64"
3997         fi
3998         if enabled shared; then
3999             # Cannot build both shared and static libs when using dllexport.
4000             disable static
4001         fi
4002         check_ldflags -Wl,--nxcompat
4003         check_ldflags -Wl,--dynamicbase
4004         shlibdir_default="$bindir_default"
4005         SLIBPREF=""
4006         SLIBSUF=".dll"
4007         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4008         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4009         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4010         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4011         SLIB_INSTALL_LINKS=
4012         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4013         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4014         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4015         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4016         enabled x86_64 && objformat="win64" || objformat="win32"
4017         dlltool="${cross_prefix}dlltool"
4018         ranlib=:
4019         enable dos_paths
4020         ;;
4021     win32|win64)
4022         disable symver
4023         if enabled shared; then
4024             # Link to the import library instead of the normal static library
4025             # for shared libs.
4026             LD_LIB='%.lib'
4027             # Cannot build both shared and static libs with MSVC or icl.
4028             disable static
4029         fi
4030         shlibdir_default="$bindir_default"
4031         SLIBPREF=""
4032         SLIBSUF=".dll"
4033         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4034         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4035         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4036         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4037         SLIB_INSTALL_LINKS=
4038         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4039         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4040         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4041         enabled x86_64 && objformat="win64" || objformat="win32"
4042         ranlib=:
4043         enable dos_paths
4044         ;;
4045     cygwin*)
4046         target_os=cygwin
4047         shlibdir_default="$bindir_default"
4048         SLIBPREF="cyg"
4049         SLIBSUF=".dll"
4050         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4051         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4052         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4053         SLIB_INSTALL_LINKS=
4054         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4055         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4056         enabled x86_64 && objformat="win64" || objformat="win32"
4057         enable dos_paths
4058         ;;
4059     *-dos|freedos|opendos)
4060         network_extralibs="-lsocket"
4061         objformat="coff"
4062         enable dos_paths
4063         add_cppflags -U__STRICT_ANSI__
4064         ;;
4065     linux)
4066         enable dv1394
4067         enable section_data_rel_ro
4068         ;;
4069     irix*)
4070         target_os=irix
4071         ranlib="echo ignoring ranlib"
4072         ;;
4073     os/2*)
4074         ln_s="cp -f"
4075         objformat="aout"
4076         add_cppflags -D_GNU_SOURCE
4077         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4078         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4079         LIBSUF="_s.a"
4080         SLIBPREF=""
4081         SLIBSUF=".dll"
4082         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4083         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4084         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4085             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4086             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4087             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4088             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4089         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4090             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4091         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4092         enable dos_paths
4093         ;;
4094     gnu/kfreebsd)
4095         add_cppflags -D_BSD_SOURCE
4096         ;;
4097     gnu)
4098         ;;
4099     qnx)
4100         add_cppflags -D_QNX_SOURCE
4101         network_extralibs="-lsocket"
4102         ;;
4103     symbian)
4104         SLIBSUF=".dll"
4105         enable dos_paths
4106         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4107         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4108         add_ldflags -Wl,--target1-abs,--no-undefined \
4109                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4110                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4111         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4112                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4113                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4114         ;;
4115     minix)
4116         ;;
4117     none)
4118         ;;
4119     *)
4120         die "Unknown OS '$target_os'."
4121         ;;
4122 esac
4123
4124 # determine libc flavour
4125
4126 probe_libc(){
4127     pfx=$1
4128     pfx_no_=${pfx%_}
4129     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4130     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4131         eval ${pfx}libc_type=uclibc
4132         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4133     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4134         eval ${pfx}libc_type=glibc
4135         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4136     # MinGW headers can be installed on Cygwin, so check for newlib first.
4137     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4138         eval ${pfx}libc_type=newlib
4139         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4140     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4141     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4142         eval ${pfx}libc_type=mingw64
4143         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4144         eval test \$${pfx_no_}cc_type = "gcc" &&
4145             add_${pfx}cppflags -D__printf__=__gnu_printf__
4146     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4147          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4148         eval ${pfx}libc_type=mingw32
4149         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4150             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4151             die "ERROR: MinGW32 runtime version must be >= 3.15."
4152         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4153         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4154             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4155         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4156             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4157         eval test \$${pfx_no_}cc_type = "gcc" &&
4158             add_${pfx}cppflags -D__printf__=__gnu_printf__
4159     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4160         eval ${pfx}libc_type=msvcrt
4161         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4162             if [ "$pfx" = host_ ]; then
4163                 add_host_cppflags -Dsnprintf=_snprintf
4164             else
4165                 add_compat strtod.o strtod=avpriv_strtod
4166                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4167                                              _snprintf=avpriv_snprintf  \
4168                                              vsnprintf=avpriv_vsnprintf
4169             fi
4170         fi
4171         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4172         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4173         # 0x601 by default unless something else is set by the user.
4174         # This can easily lead to us detecting functions only present
4175         # in such new versions and producing binaries requiring windows 7.0.
4176         # Therefore explicitly set the default to XP unless the user has
4177         # set something else on the command line.
4178         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4179         # family. For these cases, configure is free to use any functions
4180         # found in the SDK headers by default. (Alternatively, we could force
4181         # _WIN32_WINNT to 0x0602 in that case.)
4182         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4183             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4184 #ifdef WINAPI_FAMILY
4185 #include <winapifamily.h>
4186 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4187 #error not desktop
4188 #endif
4189 #endif
4190 EOF
4191         if [ "$pfx" = "" ]; then
4192             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4193         fi
4194     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4195         eval ${pfx}libc_type=klibc
4196     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4197         eval ${pfx}libc_type=bionic
4198     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4199         eval ${pfx}libc_type=solaris
4200         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4201     else
4202         eval ${pfx}libc_type=default
4203         add_${pfx}cppflags -D_DEFAULT_SOURCE
4204     fi
4205 }
4206
4207 probe_libc
4208 test -n "$libc_type" && enable libc_$libc_type
4209 probe_libc host_
4210 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4211
4212 # hacks for compiler/libc/os combinations
4213
4214 case $libc_type in
4215     bionic)
4216         add_compat strtod.o strtod=avpriv_strtod
4217         ;;
4218     glibc)
4219         if enabled tms470; then
4220             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4221             add_cppflags -D__USER_LABEL_PREFIX__=
4222             add_cppflags -D__builtin_memset=memset
4223             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4224             add_cflags   -pds=48    # incompatible redefinition of macro
4225         fi
4226         ;;
4227 esac
4228
4229 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4230     add_cppflags '-I\$(SRC_PATH)/compat/float'
4231
4232 esc(){
4233     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4234 }
4235
4236 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4237
4238 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4239
4240 set_default $PATHS_LIST
4241 set_default nm
4242
4243 # we need to build at least one lib type
4244 if ! enabled_any static shared; then
4245     cat <<EOF
4246 At least one library type must be built.
4247 Specify --enable-static to build the static libraries or --enable-shared to
4248 build the shared libraries as well. To only build the shared libraries specify
4249 --disable-static in addition to --enable-shared.
4250 EOF
4251     exit 1
4252 fi
4253
4254 disabled optimizations || check_cflags -fomit-frame-pointer
4255
4256 enable_weak_pic() {
4257     disabled pic && return
4258     enable pic
4259     add_cppflags -DPIC
4260     case "$target_os" in
4261     mingw*|cygwin*)
4262         ;;
4263     *)
4264         add_cflags -fPIC
4265         ;;
4266     esac
4267     add_asflags  -fPIC
4268 }
4269
4270 enabled pic && enable_weak_pic
4271
4272 check_cc <<EOF || die "Symbol mangling check failed."
4273 int ff_extern;
4274 EOF
4275 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4276 extern_prefix=${sym%%ff_extern*}
4277
4278 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4279
4280 _restrict=
4281 for restrict_keyword in restrict __restrict__ __restrict; do
4282     check_cc <<EOF && _restrict=$restrict_keyword && break
4283 void foo(char * $restrict_keyword p);
4284 EOF
4285 done
4286
4287 check_cc <<EOF && enable pragma_deprecated
4288 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4289 EOF
4290
4291 check_cc <<EOF || die "endian test failed"
4292 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4293 EOF
4294 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4295
4296 check_gas() {
4297     log "check_gas using '$as' as AS"
4298     # :vararg is used on aarch64, arm and ppc altivec
4299     check_as <<EOF || return 1
4300 .macro m n, y:vararg=0
4301 \n: .int \y
4302 .endm
4303 m x
4304 EOF
4305     # .altmacro is only used in arm asm
4306     ! enabled arm || check_as <<EOF || return 1
4307 .altmacro
4308 EOF
4309     enable gnu_as
4310     return 0
4311 }
4312
4313 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4314     nogas=:
4315     enabled_any arm aarch64 && nogas=die
4316     enabled_all ppc altivec && nogas=warn
4317     as_noop=-v
4318
4319     case $as_type in
4320         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4321         gcc)  gaspp_as_type=gas ;;
4322         *)    gaspp_as_type=$as_type ;;
4323     esac
4324
4325     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4326
4327     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4328         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4329
4330     if ! check_gas ; then
4331         as=${gas:=$as}
4332         check_gas || \
4333             $nogas "GNU assembler not found, install/update gas-preprocessor"
4334     fi
4335
4336     check_as <<EOF && enable as_func
4337 .func test
4338 .endfunc
4339 EOF
4340 fi
4341
4342 check_inline_asm inline_asm_labels '"1:\n"'
4343
4344 if enabled aarch64; then
4345     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4346     # internal assembler in clang 3.3 does not support this instruction
4347     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4348     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4349
4350     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4351
4352 elif enabled alpha; then
4353
4354     check_cflags -mieee
4355
4356 elif enabled arm; then
4357
4358     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4359     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4360     enabled thumb && check_cflags -mthumb || check_cflags -marm
4361
4362     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4363         enable vfp_args
4364     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4365         enable vfp_args
4366     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4367         case "${cross_prefix:-$cc}" in
4368             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4369             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4370 __asm__ (".eabi_attribute 28, 1");
4371 int main(void) { return 0; }
4372 EOF
4373         esac
4374         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4375     fi
4376
4377     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4378     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4379     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4380     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4381     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4382     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4383
4384     [ $target_os = linux ] || [ $target_os = android ] ||
4385         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4386             $ARCH_EXT_LIST_ARM
4387
4388     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4389
4390     check_as <<EOF && enable as_arch_directive
4391 .arch armv7-a
4392 EOF
4393     check_as <<EOF && enable as_fpu_directive
4394 .fpu neon
4395 EOF
4396
4397     # llvm's integrated assembler supports .object_arch from llvm 3.5
4398     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4399         check_as <<EOF && enable as_object_arch
4400 .object_arch armv4
4401 EOF
4402
4403     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4404
4405 elif enabled mips; then
4406
4407     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4408
4409     # make sure that only an instruction set is enabled
4410     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4411
4412     if enabled mips64; then
4413         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4414             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4415                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4416     else
4417         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4418             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4419                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4420     fi
4421
4422 elif enabled parisc; then
4423
4424     if enabled gcc; then
4425         case $($cc -dumpversion) in
4426             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4427         esac
4428     fi
4429
4430 elif enabled ppc; then
4431
4432     enable local_aligned_8 local_aligned_16 local_aligned_32
4433
4434     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4435     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4436     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4437     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4438
4439     if enabled altivec; then
4440         check_cflags -maltivec -mabi=altivec
4441
4442         # check if our compiler supports Motorola AltiVec C API
4443         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4444                                  vector signed int v2 = (vector signed int) { 1 };
4445                                  v1 = vec_add(v1, v2);" ||
4446             disable altivec
4447
4448         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4449     fi
4450
4451     if enabled vsx; then
4452         check_cflags -mvsx &&
4453         check_code cc altivec.h "int v[4] = { 0 };
4454                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4455             disable vsx
4456     fi
4457
4458     if enabled power8; then
4459         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4460     fi
4461
4462 elif enabled x86; then
4463
4464     check_builtin rdtsc    intrin.h   "__rdtsc()"
4465     check_builtin mm_empty mmintrin.h "_mm_empty()"
4466
4467     enable local_aligned_8 local_aligned_16 local_aligned_32
4468
4469     # check whether EBP is available on x86
4470     # As 'i' is stored on the stack, this program will crash
4471     # if the base pointer is used to access it because the
4472     # base pointer is cleared in the inline assembly code.
4473     check_exec_crash <<EOF && enable ebp_available
4474 volatile int i=0;
4475 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4476 return i;
4477 EOF
4478
4479     # check whether EBX is available on x86
4480     check_inline_asm ebx_available '""::"b"(0)' &&
4481         check_inline_asm ebx_available '"":::"%ebx"'
4482
4483     # check whether xmm clobbers are supported
4484     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4485
4486     # check whether binutils is new enough to compile SSSE3/MMXEXT
4487     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4488     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4489
4490     probe_x86asm(){
4491         x86asmexe_probe=$1
4492         if check_cmd $x86asmexe_probe -v; then
4493             x86asmexe=$x86asmexe_probe
4494             x86asm_type=nasm
4495             x86asm_debug="-g -F dwarf"
4496             X86ASMDEP=
4497             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4498         elif check_cmd $x86asmexe_probe --version; then
4499             x86asmexe=$x86asmexe_probe
4500             x86asm_type=yasm
4501             x86asm_debug="-g dwarf2"
4502             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4503             X86ASM_DEPFLAGS=
4504         fi
4505         check_x86asm "movbe ecx, [5]" && enable x86asm
4506     }
4507
4508     if ! disabled_any asm mmx x86asm; then
4509         disable x86asm
4510         for program in $x86asmexe nasm yasm; do
4511             probe_x86asm $program && break
4512         done
4513         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4514         X86ASMFLAGS="-f $objformat"
4515         enabled pic               && append X86ASMFLAGS "-DPIC"
4516         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4517         case "$objformat" in
4518             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4519         esac
4520
4521         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4522         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4523         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4524         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4525         check_x86asm "CPU amdnop"                      || disable cpunop
4526     fi
4527
4528     case "$cpu" in
4529         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4530             disable fast_clz
4531         ;;
4532     esac
4533
4534 fi
4535
4536 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4537
4538 check_ldflags -Wl,--as-needed
4539
4540 if ! disabled network; then
4541     check_func getaddrinfo $network_extralibs
4542     check_func inet_aton $network_extralibs
4543
4544     check_type netdb.h "struct addrinfo"
4545     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4546     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4547     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4548     check_type poll.h "struct pollfd"
4549     check_type netinet/sctp.h "struct sctp_event_subscribe"
4550     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4551     check_type netinet/in.h "struct sockaddr_in6"
4552     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4553     check_type "sys/types.h sys/socket.h" socklen_t
4554
4555     # Prefer arpa/inet.h over winsock2
4556     if check_header arpa/inet.h ; then
4557         check_func closesocket
4558     elif check_header winsock2.h ; then
4559         check_func_headers winsock2.h closesocket -lws2 &&
4560             network_extralibs="-lws2" ||
4561         { check_func_headers winsock2.h closesocket -lws2_32 &&
4562             network_extralibs="-lws2_32"; } || disable winsock2_h network
4563         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4564
4565         check_type ws2tcpip.h socklen_t
4566         check_type ws2tcpip.h "struct addrinfo"
4567         check_type ws2tcpip.h "struct group_source_req"
4568         check_type ws2tcpip.h "struct ip_mreq_source"
4569         check_type ws2tcpip.h "struct ipv6_mreq"
4570         check_type winsock2.h "struct pollfd"
4571         check_struct winsock2.h "struct sockaddr" sa_len
4572         check_type ws2tcpip.h "struct sockaddr_in6"
4573         check_type ws2tcpip.h "struct sockaddr_storage"
4574     else
4575         disable network
4576     fi
4577 fi
4578
4579 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4580 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4581 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4582 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4583
4584 case "$custom_allocator" in
4585     jemalloc)
4586         # jemalloc by default does not use a prefix
4587         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4588     ;;
4589     tcmalloc)
4590         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4591         malloc_prefix=tc_
4592     ;;
4593 esac
4594
4595 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4596 check_func  ${malloc_prefix}memalign            && enable memalign
4597 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4598
4599 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4600     { check_lib clock_gettime time.h clock_gettime ||
4601       check_lib clock_gettime time.h clock_gettime -lrt; }
4602
4603 check_func  fcntl
4604 check_func  gethrtime
4605 check_func  getopt
4606 check_func  getrusage
4607 check_func  gettimeofday
4608 check_func  gmtime_r
4609 check_func  isatty
4610 check_func  localtime_r
4611 check_func  mach_absolute_time
4612 check_func  mkstemp
4613 check_func  mmap
4614 check_func  mprotect
4615 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4616 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4617 check_func  sched_getaffinity
4618 check_func  setrlimit
4619 check_func  strerror_r
4620 check_func  sysconf
4621 check_func  sysctl
4622 check_func  usleep
4623
4624 check_func_headers io.h setmode
4625 check_func_headers stdlib.h getenv
4626
4627 check_func_headers windows.h GetProcessAffinityMask
4628 check_func_headers windows.h GetProcessTimes
4629 check_func_headers windows.h GetSystemTimeAsFileTime
4630 check_func_headers windows.h LoadLibrary
4631 check_func_headers windows.h MapViewOfFile
4632 check_func_headers windows.h SetConsoleTextAttribute
4633 check_func_headers windows.h Sleep
4634 check_func_headers windows.h VirtualAlloc
4635 check_struct windows.h "CONDITION_VARIABLE" Ptr
4636
4637 check_header direct.h
4638 check_header dxgidebug.h
4639 check_header dxva.h
4640 check_header dxva2api.h
4641 check_header io.h
4642 check_header mach/mach_time.h
4643 check_header malloc.h
4644 check_header poll.h
4645 check_header sys/param.h
4646 check_header sys/resource.h
4647 check_header sys/select.h
4648 check_header sys/time.h
4649 check_header sys/un.h
4650 check_header unistd.h
4651 check_header valgrind/valgrind.h
4652 check_header VideoDecodeAcceleration/VDADecoder.h
4653 check_header windows.h
4654
4655 # it seems there are versions of clang in some distros that try to use the
4656 # gcc headers, which explodes for stdatomic
4657 # so we also check that atomics actually work here
4658 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4659
4660 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4661 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4662 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4663 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4664
4665 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4666
4667 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4668 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4669 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4670
4671 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4672 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4673 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4674
4675 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4676 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4677 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4678 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4679 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4680 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4681 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4682 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4683 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4684
4685 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4686
4687 if ! disabled w32threads && ! enabled pthreads; then
4688     check_lib w32threads "windows.h process.h" _beginthreadex
4689 fi
4690
4691 # check for some common methods of building with pthread support
4692 # do this before the optional library checks as some of them require pthreads
4693 if ! disabled pthreads && ! enabled w32threads; then
4694     if check_lib pthreads pthread.h pthread_join -pthread; then
4695         add_cflags -pthread
4696     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4697         add_cflags -pthreads
4698     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4699         :
4700     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4701         :
4702     elif check_func pthread_join; then
4703         enable pthreads
4704     fi
4705 fi
4706
4707 enabled pthreads &&
4708     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4709
4710 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4711 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4712
4713 # On some systems dynamic loading requires no extra linker flags
4714 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4715
4716 check_lib libm math.h sin -lm
4717
4718 atan2f_args=2
4719 ldexpf_args=2
4720 powf_args=2
4721
4722 for func in $MATH_FUNCS; do
4723     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4724 done
4725
4726 # these are off by default, so fail if requested and not available
4727 enabled avisynth          && require_header avisynth/avisynth_c.h
4728 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4729 enabled cuda              && require cuda cuda.h cuInit -lcuda
4730 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4731 enabled frei0r            && require_header frei0r.h
4732 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4733 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4734 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4735 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4736 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4737 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4738 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4739 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4740 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4741 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4742 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4743 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4744 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4745 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4746 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4747 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4748 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4749 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4750 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4751 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4752                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4753 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4754 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4755 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4756 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4757 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4758 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4759 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4760 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4761 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4762 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4763 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4764 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4765                              { enabled libvpx_vp8_decoder &&
4766                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4767                                enabled libvpx_vp8_encoder &&
4768                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4769                                enabled libvpx_vp9_decoder &&
4770                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4771                                enabled libvpx_vp9_encoder &&
4772                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4773                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4774                                    die "libvpx enabled but no supported decoders/encoders found"
4775                              }
4776 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4777 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4778 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4779                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4780                              { check_cpp_condition x264.h "X264_MPEG2" &&
4781                                enable libx262; }
4782 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4783                              require_cpp_condition x265.h "X265_BUILD >= 57"
4784 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4785 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4786 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4787                                { ! enabled cross_compile &&
4788                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4789                                  add_ldflags -L/opt/vc/lib/ &&
4790                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4791                                die "ERROR: mmal not found" &&
4792                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4793 enabled omx               && require_header OMX_Core.h
4794 enabled omx_rpi           && { check_header OMX_Core.h ||
4795                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4796                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4797 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4798                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4799                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4800                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4801                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4802                                die "ERROR: openssl not found"; }
4803
4804 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4805
4806 if enabled nvenc; then
4807     require_header nvEncodeAPI.h
4808     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4809 fi
4810
4811 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4812 enabled avplay &&
4813     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4814
4815 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4816 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4817
4818 check_header linux/fb.h
4819 check_header linux/videodev2.h
4820 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4821
4822 check_header AVFoundation/AVFoundation.h
4823
4824 check_header sys/videoio.h
4825
4826 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4827 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4828 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4829 # w32api 3.12 had it defined wrong
4830 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4831
4832 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4833 { check_header dev/bktr/ioctl_meteor.h &&
4834   check_header dev/bktr/ioctl_bt848.h; } ||
4835 { check_header machine/ioctl_meteor.h &&
4836   check_header machine/ioctl_bt848.h; } ||
4837 { check_header dev/video/meteor/ioctl_meteor.h &&
4838   check_header dev/video/bktr/ioctl_bt848.h; } ||
4839 check_header dev/ic/bt8xx.h
4840