configure: Group system feature variables and system libraries together
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
191   --enable-libcdio           audio CD input
192   --enable-libdc1394         IEEE 1394/Firewire camera input
193   --enable-libdcadec         DCA audio decoding
194   --enable-libfaac           AAC audio encoding
195   --enable-libfdk-aac        AAC audio encoding/decoding
196   --enable-libfontconfig     font configuration and management
197   --enable-libfreetype       font rendering
198   --enable-libgsm            GSM audio encoding/decoding
199   --enable-libhdcd           HDCD decoding filter
200   --enable-libilbc           ILBC audio encoding/decoding
201   --enable-libjack           JACK audio sound server
202   --enable-libkvazaar        HEVC video encoding
203   --enable-libmp3lame        MP3 audio encoding
204   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
205   --enable-libopencore-amrwb AMR-WB audio decoding
206   --enable-libopencv         computer vision
207   --enable-libopenh264       H.264 video encoding/decoding
208   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
209   --enable-libopus           Opus audio encoding/decoding
210   --enable-libpulse          Pulseaudio sound server
211   --enable-librtmp           RTMP streaming
212   --enable-libschroedinger   Dirac video encoding/decoding
213   --enable-libsnappy         snappy compression
214   --enable-libspeex          Speex audio encoding/decoding
215   --enable-libtheora         Theora video encoding/decoding
216   --enable-libtwolame        MP2 audio encoding
217   --enable-libvo-aacenc      AAC audio encoding
218   --enable-libvo-amrwbenc    AMR-WB audio encoding
219   --enable-libvorbis         Vorbis audio encoding/decoding
220   --enable-libvpx            VP* video encoding/decoding
221   --enable-libwavpack        Wavpack audio encoding/decoding
222   --enable-libwebp           WebP image encoding/decoding
223   --enable-libx264           H.264 video encoding
224   --enable-libx265           HEVC video encoding
225   --enable-libxavs           Chinese AVS video encoding
226   --enable-libxcb            X window system protocol communication
227   --enable-libxcb-shm        X11 shm communication [auto]
228   --enable-libxcb-xfixes     X11 mouse rendering [auto]
229   --enable-libxvid           MPEG-4 ASP video encoding
230   --enable-openssl           crypto
231   --enable-zlib              compression [autodetect]
232
233   The following libraries provide various hardware acceleration features:
234   --enable-cuda    Nvidia CUDA (dynamically linked)
235   --enable-cuvid   Nvidia CUVID video decode acceleration
236   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
237   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
238   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
239   --enable-libnpp  Nvidia CUDA processing
240   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
241   --enable-nvenc   Nvidia video encoding
242   --enable-omx     OpenMAX IL
243   --enable-omx-rpi OpenMAX IL for Raspberry Pi
244   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
245   --enable-vda     Apple Video Decode Acceleration [auto]
246   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
247
248 Toolchain options:
249   --arch=ARCH              select architecture [$arch]
250   --cpu=CPU                select the minimum required CPU (affects
251                            instruction selection, may crash on older CPUs)
252   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
253   --enable-cross-compile   assume a cross-compiler is used
254   --sysroot=PATH           root of cross-build tree
255   --sysinclude=PATH        location of cross-build system headers
256   --target-os=OS           compiler targets OS [$target_os]
257   --target-exec=CMD        command to run executables on target
258   --target-path=DIR        path to view of build directory on target
259   --target-samples=DIR     path to samples directory on target
260   --toolchain=NAME         set tool defaults according to NAME
261   --nm=NM                  use nm tool
262   --ar=AR                  use archive tool AR [$ar_default]
263   --as=AS                  use assembler AS [$as_default]
264   --cc=CC                  use C compiler CC [$cc_default]
265   --objcc=OCC              use ObjC compiler OCC [$cc_default]
266   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
267   --ld=LD                  use linker LD
268   --x86asmexe=X86ASM       use x86 assembler X86ASM
269   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
270   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
271   --host-cc=HOSTCC         use host C compiler HOSTCC
272   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
273   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
274   --host-ld=HOSTLD         use host linker HOSTLD
275   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
276   --host-libs=HLIBS        use libs HLIBS when linking for host
277   --host-os=OS             compiler host OS [$target_os]
278   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
279   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
280   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
281   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
282   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --enable-pic             build position-independent code
287   --enable-thumb           compile for Thumb instruction set
288   --enable-lto             use link-time optimization
289   --env="ENV=override"     override the environment variables
290
291 Advanced options (experts only):
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --custom-allocator=NAME  use a supported custom allocator
294   --disable-symver         disable symbol versioning
295   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
296   --disable-safe-bitstream-reader
297                            disable buffer boundary checking in bitreaders
298                            (faster, but may crash)
299   --enable-sram            allow use of on-chip SRAM
300
301 Optimization options (experts only):
302   --disable-asm            disable all assembly optimizations
303   --disable-altivec        disable AltiVec optimizations
304   --disable-vsx            disable VSX optimizations
305   --disable-power8         disable POWER8 optimizations
306   --disable-amd3dnow       disable 3DNow! optimizations
307   --disable-amd3dnowext    disable 3DNow! extended optimizations
308   --disable-mmx            disable MMX optimizations
309   --disable-mmxext         disable MMXEXT optimizations
310   --disable-sse            disable SSE optimizations
311   --disable-sse2           disable SSE2 optimizations
312   --disable-sse3           disable SSE3 optimizations
313   --disable-ssse3          disable SSSE3 optimizations
314   --disable-sse4           disable SSE4 optimizations
315   --disable-sse42          disable SSE4.2 optimizations
316   --disable-avx            disable AVX optimizations
317   --disable-xop            disable XOP optimizations
318   --disable-fma3           disable FMA3 optimizations
319   --disable-fma4           disable FMA4 optimizations
320   --disable-avx2           disable AVX2 optimizations
321   --disable-armv5te        disable armv5te optimizations
322   --disable-armv6          disable armv6 optimizations
323   --disable-armv6t2        disable armv6t2 optimizations
324   --disable-vfp            disable VFP optimizations
325   --disable-neon           disable NEON optimizations
326   --disable-inline-asm     disable use of inline assembly
327   --disable-x86asm         disable use of standalone x86 assembly
328
329 Developer options (useful when working on Libav itself):
330   --disable-debug          disable debugging symbols
331   --enable-debug=LEVEL     set the debug level [$debuglevel]
332   --disable-optimizations  disable compiler optimizations
333   --enable-extra-warnings  enable more compiler warnings
334   --samples=PATH           location of test samples for FATE, if not set use
335                            \$LIBAV_SAMPLES at make invocation time.
336   --enable-neon-clobber-test check NEON registers for clobbering (should be
337                            used only for debugging purposes)
338   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
339                            should be used only for debugging purposes)
340   --disable-valgrind-backtrace do not print a backtrace under Valgrind
341                            (only applies to --disable-optimizations builds)
342   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
343                            in the name) of tests whose result is ignored
344
345 NOTE: Object files are built at the place where configure is launched.
346 EOF
347   exit 0
348 }
349
350 quotes='""'
351
352 log(){
353     echo "$@" >> $logfile
354 }
355
356 log_file(){
357     log BEGIN $1
358     i=1
359     while read line; do
360         printf '%5s   %s\n' "${i}" "${line}"
361         i=$(($i+1))
362     done < $1 >> $logfile
363     log END $1
364 }
365
366 echolog(){
367     log "$@"
368     echo "$@"
369 }
370
371 warn(){
372     log "WARNING: $*"
373     WARNINGS="${WARNINGS}WARNING: $*\n"
374 }
375
376 die(){
377     echolog "$@"
378     cat <<EOF
379
380 If you think configure made a mistake, make sure you are using the latest
381 version from Git.  If the latest version fails, report the problem to the
382 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
383 EOF
384     if disabled logging; then
385         cat <<EOF
386 Rerun configure with logging enabled (do not use --disable-logging), and
387 include the log this produces with your report.
388 EOF
389     else
390         cat <<EOF
391 Include the log file "$logfile" produced by configure as this will help
392 solving the problem.
393 EOF
394     fi
395     exit 1
396 }
397
398 # Avoid locale weirdness, besides we really just want to translate ASCII.
399 toupper(){
400     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
401 }
402
403 tolower(){
404     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
405 }
406
407 c_escape(){
408     echo "$*" | sed 's/["\\]/\\\0/g'
409 }
410
411 sh_quote(){
412     v=$(echo "$1" | sed "s/'/'\\\\''/g")
413     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
414     echo "$v"
415 }
416
417 cleanws(){
418     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
419 }
420
421 filter(){
422     pat=$1
423     shift
424     for v; do
425         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
426     done
427 }
428
429 filter_out(){
430     pat=$1
431     shift
432     for v; do
433         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
434     done
435 }
436
437 map(){
438     m=$1
439     shift
440     for v; do eval $m; done
441 }
442
443 add_suffix(){
444     suffix=$1
445     shift
446     for v; do echo ${v}${suffix}; done
447 }
448
449 set_all(){
450     value=$1
451     shift
452     for var in $*; do
453         eval $var=$value
454     done
455 }
456
457 set_weak(){
458     value=$1
459     shift
460     for var; do
461         eval : \${$var:=$value}
462     done
463 }
464
465 sanitize_var_name(){
466     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
467 }
468
469 set_sanitized(){
470     var=$1
471     shift
472     eval $(sanitize_var_name "$var")='$*'
473 }
474
475 get_sanitized(){
476     eval echo \$$(sanitize_var_name "$1")
477 }
478
479 pushvar(){
480     for pvar in $*; do
481         eval level=\${${pvar}_level:=0}
482         eval ${pvar}_${level}="\$$pvar"
483         eval ${pvar}_level=$(($level+1))
484     done
485 }
486
487 popvar(){
488     for pvar in $*; do
489         eval level=\${${pvar}_level:-0}
490         test $level = 0 && continue
491         eval level=$(($level-1))
492         eval $pvar="\${${pvar}_${level}}"
493         eval ${pvar}_level=$level
494         eval unset ${pvar}_${level}
495     done
496 }
497
498 enable(){
499     set_all yes $*
500 }
501
502 disable(){
503     set_all no $*
504 }
505
506 enable_weak(){
507     set_weak yes $*
508 }
509
510 disable_weak(){
511     set_weak no $*
512 }
513
514 enable_sanitized(){
515     for var; do
516         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
517     done
518 }
519
520 disable_sanitized(){
521     for var; do
522         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
523     done
524 }
525
526 do_enable_deep(){
527     for var; do
528         enabled $var && continue
529         eval sel="\$${var}_select"
530         eval sgs="\$${var}_suggest"
531         pushvar var sgs
532         enable_deep $sel
533         popvar sgs
534         enable_deep_weak $sgs
535         popvar var
536     done
537 }
538
539 enable_deep(){
540     do_enable_deep $*
541     enable $*
542 }
543
544 enable_deep_weak(){
545     for var; do
546         disabled $var && continue
547         pushvar var
548         do_enable_deep $var
549         popvar var
550         enable_weak $var
551     done
552 }
553
554 enabled(){
555     test "${1#!}" = "$1" && op== || op=!=
556     eval test "x\$${1#!}" $op "xyes"
557 }
558
559 disabled(){
560     test "${1#!}" = "$1" && op== || op=!=
561     eval test "x\$${1#!}" $op "xno"
562 }
563
564 enabled_all(){
565     for opt; do
566         enabled $opt || return 1
567     done
568 }
569
570 disabled_all(){
571     for opt; do
572         disabled $opt || return 1
573     done
574 }
575
576 enabled_any(){
577     for opt; do
578         enabled $opt && return 0
579     done
580 }
581
582 disabled_any(){
583     for opt; do
584         disabled $opt && return 0
585     done
586     return 1
587 }
588
589 set_default(){
590     for opt; do
591         eval : \${$opt:=\$${opt}_default}
592     done
593 }
594
595 is_in(){
596     value=$1
597     shift
598     for var in $*; do
599         [ $var = $value ] && return 0
600     done
601     return 1
602 }
603
604 check_deps(){
605     for cfg; do
606         enabled ${cfg}_checking && die "Circular dependency for $cfg."
607         disabled ${cfg}_checking && continue
608         enable ${cfg}_checking
609
610         eval dep_all="\$${cfg}_deps"
611         eval dep_any="\$${cfg}_deps_any"
612         eval dep_con="\$${cfg}_conflict"
613         eval dep_sel="\$${cfg}_select"
614         eval dep_sgs="\$${cfg}_suggest"
615         eval dep_ifa="\$${cfg}_if"
616         eval dep_ifn="\$${cfg}_if_any"
617
618         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
619         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
620         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
621
622         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
623         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
624         enabled_all  $dep_all || disable $cfg
625         enabled_any  $dep_any || disable $cfg
626         disabled_all $dep_con || disable $cfg
627         disabled_any $dep_sel && disable $cfg
628
629         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
630
631         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
632             # filter out library deps, these do not belong in extralibs
633             is_in $dep $LIBRARY_LIST && continue
634             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
635         done
636
637         disable ${cfg}_checking
638     done
639 }
640
641 print_config(){
642     pfx=$1
643     files=$2
644     shift 2
645     map 'eval echo "$v \${$v:-no}"' "$@" |
646     awk "BEGIN { split(\"$files\", files) }
647         {
648             c = \"$pfx\" toupper(\$1);
649             v = \$2;
650             sub(/yes/, 1, v);
651             sub(/no/,  0, v);
652             for (f in files) {
653                 file = files[f];
654                 if (file ~ /\\.h\$/) {
655                     printf(\"#define %s %d\\n\", c, v) >>file;
656                 } else if (file ~ /\\.asm\$/) {
657                     printf(\"%%define %s %d\\n\", c, v) >>file;
658                 } else if (file ~ /\\.mak\$/) {
659                     n = -v ? \"\" : \"!\";
660                     printf(\"%s%s=yes\\n\", n, c) >>file;
661                 }
662             }
663         }"
664 }
665
666 print_enabled(){
667     suf=$1
668     shift
669     for v; do
670         enabled $v && printf "%s\n" ${v%$suf}
671     done
672 }
673
674 append(){
675     var=$1
676     shift
677     eval "$var=\"\$$var $*\""
678 }
679
680 prepend(){
681     var=$1
682     shift
683     eval "$var=\"$* \$$var\""
684 }
685
686 unique(){
687     var=$1
688     uniq_list=""
689     for tok in $(eval echo \$$var); do
690         uniq_list="$(filter_out $tok $uniq_list) $tok"
691     done
692     eval "$var=\"${uniq_list}\""
693 }
694
695 resolve(){
696     var=$1
697     tmpvar=
698     for entry in $(eval echo \$$var); do
699         tmpvar="$tmpvar $(eval echo \$${entry})"
700     done
701     eval "$var=\"${tmpvar}\""
702 }
703
704 add_cppflags(){
705     append CPPFLAGS "$@"
706 }
707
708 add_cflags(){
709     append CFLAGS $($cflags_filter "$@")
710 }
711
712 add_cflags_headers(){
713     append CFLAGS_HEADERS $($cflags_filter "$@")
714 }
715
716 add_asflags(){
717     append ASFLAGS $($asflags_filter "$@")
718 }
719
720 add_objcflags(){
721     append OBJCFLAGS $($objcflags_filter "$@")
722 }
723
724 add_ldflags(){
725     append LDFLAGS $($ldflags_filter "$@")
726 }
727
728 add_ldexeflags(){
729     append LDEXEFLAGS $($ldflags_filter "$@")
730 }
731
732 add_ldsoflags(){
733     append LDSOFLAGS $($ldflags_filter "$@")
734 }
735
736 add_stripflags(){
737     append STRIPFLAGS "$@"
738 }
739
740 add_extralibs(){
741     prepend extralibs $($ldflags_filter "$@")
742 }
743
744 add_host_cppflags(){
745     append host_cppflags "$@"
746 }
747
748 add_host_cflags(){
749     append host_cflags $($host_cflags_filter "$@")
750 }
751
752 add_host_ldflags(){
753     append host_ldflags $($host_ldflags_filter "$@")
754 }
755
756 add_compat(){
757     append compat_objs $1
758     shift
759     map 'add_cppflags -D$v' "$@"
760 }
761
762 check_cmd(){
763     log "$@"
764     "$@" >> $logfile 2>&1
765 }
766
767 cc_o(){
768     eval printf '%s\\n' $CC_O
769 }
770
771 cc_e(){
772     eval printf '%s\\n' $CC_E
773 }
774
775 check_cc(){
776     log check_cc "$@"
777     cat > $TMPC
778     log_file $TMPC
779     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
780 }
781
782 check_objcc(){
783     log check_objcc "$@"
784     cat > $TMPC
785     log_file $TMPC
786     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
787 }
788
789 check_cpp(){
790     log check_cpp "$@"
791     cat > $TMPC
792     log_file $TMPC
793     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
794 }
795
796 as_o(){
797     eval printf '%s\\n' $AS_O
798 }
799
800 check_as(){
801     log check_as "$@"
802     cat > $TMPS
803     log_file $TMPS
804     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
805 }
806
807 check_inline_asm(){
808     log check_inline_asm "$@"
809     name="$1"
810     code="$2"
811     shift 2
812     disable $name
813     check_cc "$@" <<EOF && enable $name
814 void foo(void){ __asm__ volatile($code); }
815 EOF
816 }
817
818 check_insn(){
819     log check_insn "$@"
820     check_inline_asm ${1}_inline "\"$2\""
821     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
822 }
823
824 check_x86asm(){
825     log check_x86asm "$@"
826     echo "$1" > $TMPS
827     log_file $TMPS
828     shift 1
829     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
830 }
831
832 ld_o(){
833     eval printf '%s\\n' $LD_O
834 }
835
836 check_ld(){
837     log check_ld "$@"
838     flags=$(filter_out '-l*' "$@")
839     libs=$(filter '-l*' "$@")
840     check_cc $($cflags_filter $flags) || return
841     flags=$($ldflags_filter $flags)
842     libs=$($ldflags_filter $libs)
843     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
844 }
845
846 print_include(){
847     hdr=$1
848     test "${hdr%.h}" = "${hdr}" &&
849         echo "#include $hdr"    ||
850         echo "#include <$hdr>"
851 }
852
853 check_code(){
854     log check_code "$@"
855     check=$1
856     headers=$2
857     code=$3
858     shift 3
859     {
860         for hdr in $headers; do
861             print_include $hdr
862         done
863         echo "int main(void) { $code; return 0; }"
864     } | check_$check "$@"
865 }
866
867 check_cppflags(){
868     log check_cppflags "$@"
869     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
870 #include <stdlib.h>;
871 EOF
872 }
873
874 test_cflags(){
875     log test_cflags "$@"
876     set -- $($cflags_filter "$@")
877     check_cc "$@" <<EOF
878 int x;
879 EOF
880 }
881
882 check_cflags(){
883     log check_cflags "$@"
884     test_cflags "$@" && add_cflags "$@"
885 }
886
887 test_objcflags(){
888     log test_objcflags "$@"
889     set -- $($objcflags_filter "$@")
890     check_objcc "$@" <<EOF
891 int x;
892 EOF
893 }
894
895 check_objcflags(){
896     log check_objcflags "$@"
897     test_objcflags "$@" && add_objcflags "$@"
898 }
899
900 test_ldflags(){
901     log test_ldflags "$@"
902     check_ld "$@" <<EOF
903 int main(void){ return 0; }
904 EOF
905 }
906
907 check_ldflags(){
908     log check_ldflags "$@"
909     test_ldflags "$@" && add_ldflags "$@"
910 }
911
912 test_stripflags(){
913     log test_stripflags "$@"
914     # call check_cc to get a fresh TMPO
915     check_cc <<EOF
916 int main(void) { return 0; }
917 EOF
918     check_cmd $strip $STRIPFLAGS "$@" $TMPO
919 }
920
921 check_stripflags(){
922     log check_stripflags "$@"
923     test_stripflags "$@" && add_stripflags "$@"
924 }
925
926 check_header(){
927     log check_header "$@"
928     headers=$1
929     shift
930     disable_sanitized $headers
931     {
932         for hdr in $headers; do
933             print_include $hdr
934         done
935         echo "int x;"
936     } | check_cpp "$@" && enable_sanitized $headers
937 }
938
939 check_func(){
940     log check_func "$@"
941     func=$1
942     shift
943     disable $func
944     check_ld "$@" <<EOF && enable $func
945 extern int $func();
946 int main(void){ $func(); }
947 EOF
948 }
949
950 check_mathfunc(){
951     log check_mathfunc "$@"
952     func=$1
953     narg=$2
954     shift 2
955     test $narg = 2 && args="f, g" || args="f"
956     disable $func
957     check_ld "$@" <<EOF && enable $func
958 #include <math.h>
959 float foo(float f, float g) { return $func($args); }
960 int main(void){ return 0; }
961 EOF
962 }
963
964 check_func_headers(){
965     log check_func_headers "$@"
966     headers=$1
967     funcs=$2
968     shift 2
969     {
970         for hdr in $headers; do
971             print_include $hdr
972         done
973         for func in $funcs; do
974             echo "long check_$func(void) { return (long) $func; }"
975         done
976         echo "int main(void) { return 0; }"
977     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
978 }
979
980 check_cpp_condition(){
981     log check_cpp_condition "$@"
982     header=$1
983     condition=$2
984     shift 2
985     check_cpp "$@" <<EOF
986 #include <$header>
987 #if !($condition)
988 #error "unsatisfied condition: $condition"
989 #endif
990 EOF
991 }
992
993 test_cflags_cpp(){
994     log test_cflags_cpp "$@"
995     flags=$1
996     condition=$2
997     shift 2
998     set -- $($cflags_filter "$flags")
999     check_cpp "$@" <<EOF
1000 #if !($condition)
1001 #error "unsatisfied condition: $condition"
1002 #endif
1003 EOF
1004 }
1005
1006 check_lib(){
1007     log check_lib "$@"
1008     name="$1"
1009     headers="$2"
1010     funcs="$3"
1011     shift 3
1012     disable $name
1013     check_func_headers "$headers" "$funcs" "$@" &&
1014         enable $name && eval ${name}_extralibs="\$@"
1015 }
1016
1017 test_pkg_config(){
1018     log test_pkg_config "$@"
1019     name="$1"
1020     pkg_version="$2"
1021     pkg="${2%% *}"
1022     headers="$3"
1023     funcs="$4"
1024     shift 4
1025     disable $name
1026     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1027     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1028     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1029     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1030         enable $name &&
1031         set_sanitized "${name}_cflags"    $pkg_cflags &&
1032         set_sanitized "${name}_extralibs" $pkg_libs
1033 }
1034
1035 check_pkg_config(){
1036     log check_pkg_config "$@"
1037     name="$1"
1038     test_pkg_config "$@" &&
1039         eval add_cflags \$${name}_cflags
1040 }
1041
1042 check_exec(){
1043     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1044 }
1045
1046 check_exec_crash(){
1047     log check_exec_crash "$@"
1048     code=$(cat)
1049
1050     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1051     # are safe but may not be available everywhere.  Thus we use
1052     # raise(SIGTERM) instead.  The check is run in a subshell so we
1053     # can redirect the "Terminated" message from the shell.  SIGBUS
1054     # is not defined by standard C so it is used conditionally.
1055
1056     (check_exec "$@") >> $logfile 2>&1 <<EOF
1057 #include <signal.h>
1058 static void sighandler(int sig){
1059     raise(SIGTERM);
1060 }
1061 int foo(void){
1062     $code
1063 }
1064 int (*func_ptr)(void) = foo;
1065 int main(void){
1066     signal(SIGILL, sighandler);
1067     signal(SIGFPE, sighandler);
1068     signal(SIGSEGV, sighandler);
1069 #ifdef SIGBUS
1070     signal(SIGBUS, sighandler);
1071 #endif
1072     return func_ptr();
1073 }
1074 EOF
1075 }
1076
1077 check_type(){
1078     log check_type "$@"
1079     headers=$1
1080     type=$2
1081     shift 2
1082     disable_sanitized "$type"
1083     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1084 }
1085
1086 check_struct(){
1087     log check_struct "$@"
1088     headers=$1
1089     struct=$2
1090     member=$3
1091     shift 3
1092     disable_sanitized "${struct}_${member}"
1093     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1094         enable_sanitized "${struct}_${member}"
1095 }
1096
1097 check_builtin(){
1098     log check_builtin "$@"
1099     name=$1
1100     headers=$2
1101     builtin=$3
1102     shift 3
1103     disable "$name"
1104     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1105 }
1106
1107 check_compile_assert(){
1108     log check_compile_assert "$@"
1109     name=$1
1110     headers=$2
1111     condition=$3
1112     shift 3
1113     disable "$name"
1114     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1115 }
1116
1117 require(){
1118     log require "$@"
1119     name_version="$1"
1120     name="${1%% *}"
1121     headers="$2"
1122     func="$3"
1123     shift 3
1124     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1125 }
1126
1127 require_header(){
1128     log require "$@"
1129     headers="$1"
1130     shift
1131     check_header "$headers" "$@" || die "ERROR: $headers not found"
1132 }
1133
1134 require_cpp_condition(){
1135     log require "$@"
1136     header="$1"
1137     condition="$2"
1138     shift 2
1139     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1140 }
1141
1142 require_pkg_config(){
1143     log require_pkg_config "$@"
1144     pkg_version="$2"
1145     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1146 }
1147
1148 hostcc_e(){
1149     eval printf '%s\\n' $HOSTCC_E
1150 }
1151
1152 hostcc_o(){
1153     eval printf '%s\\n' $HOSTCC_O
1154 }
1155
1156 check_host_cc(){
1157     log check_host_cc "$@"
1158     cat > $TMPC
1159     log_file $TMPC
1160     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1161 }
1162
1163 check_host_cpp(){
1164     log check_host_cpp "$@"
1165     cat > $TMPC
1166     log_file $TMPC
1167     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1168 }
1169
1170 check_host_cppflags(){
1171     log check_host_cppflags "$@"
1172     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1173 #include <stdlib.h>;
1174 EOF
1175 }
1176
1177 check_host_cflags(){
1178     log check_host_cflags "$@"
1179     set -- $($host_cflags_filter "$@")
1180     check_host_cc "$@" <<EOF && append host_cflags "$@"
1181 int x;
1182 EOF
1183 }
1184
1185 check_host_cpp_condition(){
1186     log check_host_cpp_condition "$@"
1187     header=$1
1188     condition=$2
1189     shift 2
1190     check_host_cpp "$@" <<EOF
1191 #include <$header>
1192 #if !($condition)
1193 #error "unsatisfied condition: $condition"
1194 #endif
1195 EOF
1196 }
1197
1198 apply(){
1199     file=$1
1200     shift
1201     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1202 }
1203
1204 cp_if_changed(){
1205     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1206     mkdir -p "$(dirname $2)"
1207     cp -f "$1" "$2"
1208 }
1209
1210 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1211 # system-dependent things.
1212
1213 AVCODEC_COMPONENTS="
1214     bsfs
1215     decoders
1216     encoders
1217     hwaccels
1218     parsers
1219 "
1220
1221 AVDEVICE_COMPONENTS="
1222     indevs
1223 "
1224 AVFILTER_COMPONENTS="
1225     filters
1226 "
1227 AVFORMAT_COMPONENTS="
1228     demuxers
1229     muxers
1230     protocols
1231 "
1232
1233 COMPONENT_LIST="
1234     $AVCODEC_COMPONENTS
1235     $AVDEVICE_COMPONENTS
1236     $AVFILTER_COMPONENTS
1237     $AVFORMAT_COMPONENTS
1238 "
1239
1240 EXAMPLE_LIST="
1241     decode_audio_example
1242     decode_video_example
1243     encode_audio_example
1244     encode_video_example
1245     filter_audio_example
1246     metadata_example
1247     output_example
1248     qsvdec_example
1249     transcode_aac_example
1250 "
1251
1252 # catchall list of things that require external libs to link
1253 EXTRALIBS_LIST="
1254     cpu_init
1255     cws2fws
1256 "
1257
1258 HWACCEL_LIBRARY_NONFREE_LIST="
1259     cuda
1260     cuvid
1261     libnpp
1262 "
1263 HWACCEL_LIBRARY_LIST="
1264     $HWACCEL_LIBRARY_NONFREE_LIST
1265     d3d11va
1266     dxva2
1267     libmfx
1268     mmal
1269     nvenc
1270     omx
1271     vaapi
1272     vda
1273     vdpau
1274 "
1275
1276 EXTERNAL_LIBRARY_GPL_LIST="
1277     libcdio
1278     libx264
1279     libx265
1280     libxavs
1281     libxvid
1282 "
1283
1284 EXTERNAL_LIBRARY_NONFREE_LIST="
1285     libfaac
1286     libfdk_aac
1287     openssl
1288 "
1289
1290 EXTERNAL_LIBRARY_VERSION3_LIST="
1291     libopencore_amrnb
1292     libopencore_amrwb
1293     libvo_aacenc
1294     libvo_amrwbenc
1295 "
1296
1297 EXTERNAL_LIBRARY_LIST="
1298     $EXTERNAL_LIBRARY_GPL_LIST
1299     $EXTERNAL_LIBRARY_NONFREE_LIST
1300     $EXTERNAL_LIBRARY_VERSION3_LIST
1301     avisynth
1302     avxsynth
1303     frei0r
1304     gnutls
1305     libbs2b
1306     libdc1394
1307     libdcadec
1308     libfontconfig
1309     libfreetype
1310     libgsm
1311     libhdcd
1312     libilbc
1313     libjack
1314     libkvazaar
1315     libmp3lame
1316     libopencv
1317     libopenh264
1318     libopenjpeg
1319     libopus
1320     libpulse
1321     librtmp
1322     libschroedinger
1323     libsnappy
1324     libspeex
1325     libtheora
1326     libtwolame
1327     libvorbis
1328     libvpx
1329     libwavpack
1330     libwebp
1331     libxcb
1332     libxcb_shm
1333     libxcb_xfixes
1334 "
1335
1336 SYSTEM_LIBRARY_LIST="
1337     bzlib
1338     zlib
1339 "
1340
1341 FEATURE_LIST="
1342     gray
1343     hardcoded_tables
1344     omx_rpi
1345     runtime_cpudetect
1346     safe_bitstream_reader
1347     shared
1348     small
1349     sram
1350     static
1351     swscale_alpha
1352 "
1353
1354 LIBRARY_LIST="
1355     avcodec
1356     avdevice
1357     avfilter
1358     avformat
1359     avresample
1360     avutil
1361     swscale
1362 "
1363
1364 LICENSE_LIST="
1365     gpl
1366     nonfree
1367     version3
1368 "
1369
1370 PROGRAM_LIST="
1371     avconv
1372     avplay
1373     avprobe
1374 "
1375
1376 SUBSYSTEM_LIST="
1377     dct
1378     doc
1379     error_resilience
1380     faan
1381     fft
1382     lsp
1383     lzo
1384     mdct
1385     network
1386     rdft
1387 "
1388
1389 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1390 CONFIG_LIST="
1391     $EXAMPLE_LIST
1392     $EXTERNAL_LIBRARY_LIST
1393     $HWACCEL_LIBRARY_LIST
1394     $FEATURE_LIST
1395     $LICENSE_LIST
1396     $LIBRARY_LIST
1397     $PROGRAM_LIST
1398     $SUBSYSTEM_LIST
1399     $SYSTEM_LIBRARY_LIST
1400     neon_clobber_test
1401     pic
1402     pod2man
1403     texi2html
1404     thumb
1405     valgrind_backtrace
1406     xmm_clobber_test
1407     $COMPONENT_LIST
1408 "
1409
1410 THREADS_LIST="
1411     pthreads
1412     w32threads
1413 "
1414
1415 ATOMICS_LIST="
1416     atomics_gcc
1417     atomics_suncc
1418     atomics_win32
1419 "
1420
1421 ARCH_LIST="
1422     aarch64
1423     alpha
1424     arm
1425     avr32
1426     avr32_ap
1427     avr32_uc
1428     bfin
1429     ia64
1430     m68k
1431     mips
1432     mips64
1433     parisc
1434     ppc
1435     ppc64
1436     s390
1437     sh4
1438     sparc
1439     sparc64
1440     tilegx
1441     tilepro
1442     tomi
1443     x86
1444     x86_32
1445     x86_64
1446 "
1447
1448 ARCH_EXT_LIST_ARM="
1449     armv5te
1450     armv6
1451     armv6t2
1452     armv8
1453     neon
1454     vfp
1455     vfpv3
1456 "
1457
1458 ARCH_EXT_LIST_X86_SIMD="
1459     amd3dnow
1460     amd3dnowext
1461     avx
1462     avx2
1463     fma3
1464     fma4
1465     mmx
1466     mmxext
1467     sse
1468     sse2
1469     sse3
1470     sse4
1471     sse42
1472     ssse3
1473     xop
1474 "
1475
1476 ARCH_EXT_LIST_PPC="
1477     altivec
1478     dcbzl
1479     ldbrx
1480     power8
1481     ppc4xx
1482     vsx
1483 "
1484
1485 ARCH_EXT_LIST_X86="
1486     $ARCH_EXT_LIST_X86_SIMD
1487     cpunop
1488     i686
1489 "
1490
1491 ARCH_EXT_LIST_MIPS="
1492     loongson
1493     mips32r1
1494     mips64r1
1495     mips32r2
1496     mips64r2
1497     mips32r6
1498     mips64r6
1499 "
1500
1501 ARCH_EXT_LIST="
1502     $ARCH_EXT_LIST_ARM
1503     $ARCH_EXT_LIST_MIPS
1504     $ARCH_EXT_LIST_PPC
1505     $ARCH_EXT_LIST_X86
1506     vis
1507 "
1508
1509 ARCH_FEATURES="
1510     aligned_stack
1511     fast_64bit
1512     fast_clz
1513     fast_cmov
1514     local_aligned_8
1515     local_aligned_16
1516     local_aligned_32
1517     simd_align_16
1518     simd_align_32
1519 "
1520
1521 BUILTIN_LIST="
1522     atomic_cas_ptr
1523     machine_rw_barrier
1524     MemoryBarrier
1525     mm_empty
1526     rdtsc
1527     sem_timedwait
1528     sync_val_compare_and_swap
1529 "
1530 HAVE_LIST_CMDLINE="
1531     inline_asm
1532     symver
1533     x86asm
1534 "
1535
1536 HAVE_LIST_PUB="
1537     bigendian
1538     fast_unaligned
1539 "
1540
1541 HEADERS_LIST="
1542     AVFoundation_AVFoundation_h
1543     arpa_inet_h
1544     cdio_paranoia_h
1545     cdio_paranoia_paranoia_h
1546     dispatch_dispatch_h
1547     dev_bktr_ioctl_bt848_h
1548     dev_bktr_ioctl_meteor_h
1549     dev_ic_bt8xx_h
1550     dev_video_bktr_ioctl_bt848_h
1551     dev_video_meteor_ioctl_meteor_h
1552     direct_h
1553     dxgidebug_h
1554     dxva_h
1555     io_h
1556     machine_ioctl_bt848_h
1557     machine_ioctl_meteor_h
1558     malloc_h
1559     poll_h
1560     sys_param_h
1561     sys_resource_h
1562     sys_select_h
1563     sys_soundcard_h
1564     sys_time_h
1565     sys_un_h
1566     sys_videoio_h
1567     unistd_h
1568     valgrind_valgrind_h
1569     windows_h
1570     winsock2_h
1571 "
1572
1573 INTRINSICS_LIST="
1574     intrinsics_neon
1575 "
1576
1577 MATH_FUNCS="
1578     atanf
1579     atan2f
1580     cbrtf
1581     cosf
1582     exp2
1583     exp2f
1584     expf
1585     isinf
1586     isnan
1587     ldexpf
1588     llrint
1589     llrintf
1590     log2
1591     log2f
1592     log10f
1593     lrint
1594     lrintf
1595     powf
1596     rint
1597     round
1598     roundf
1599     sinf
1600     trunc
1601     truncf
1602 "
1603
1604 SYSTEM_FEATURES="
1605     dos_paths
1606     libc_msvcrt
1607     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1608     section_data_rel_ro
1609     threads
1610     uwp
1611 "
1612
1613 SYSTEM_FUNCS="
1614     aligned_malloc
1615     clock_gettime
1616     closesocket
1617     CommandLineToArgvW
1618     fcntl
1619     getaddrinfo
1620     gethrtime
1621     getopt
1622     GetProcessAffinityMask
1623     GetProcessMemoryInfo
1624     GetProcessTimes
1625     getrusage
1626     GetSystemTimeAsFileTime
1627     gettimeofday
1628     gmtime_r
1629     inet_aton
1630     isatty
1631     localtime_r
1632     mach_absolute_time
1633     MapViewOfFile
1634     memalign
1635     mmap
1636     mprotect
1637     nanosleep
1638     posix_memalign
1639     sched_getaffinity
1640     SetConsoleTextAttribute
1641     setmode
1642     setrlimit
1643     Sleep
1644     strerror_r
1645     sysconf
1646     sysctl
1647     usleep
1648     VirtualAlloc
1649 "
1650
1651 SYSTEM_LIBRARIES="
1652     sdl
1653     vaapi_drm
1654     vaapi_x11
1655     vdpau_x11
1656     wincrypt
1657 "
1658
1659 TOOLCHAIN_FEATURES="
1660     as_arch_directive
1661     as_fpu_directive
1662     as_func
1663     as_object_arch
1664     asm_mod_q
1665     blocks_extension
1666     ebp_available
1667     ebx_available
1668     gnu_as
1669     ibm_asm
1670     inline_asm_labels
1671     pragma_deprecated
1672     symver_asm_label
1673     symver_gnu_asm
1674     vfp_args
1675     xform_asm
1676     xmm_clobbers
1677 "
1678
1679 TYPES_LIST="
1680     CONDITION_VARIABLE_Ptr
1681     CUVIDDECODECREATEINFO_bitDepthMinus8
1682     socklen_t
1683     struct_addrinfo
1684     struct_group_source_req
1685     struct_ip_mreq_source
1686     struct_ipv6_mreq
1687     struct_pollfd
1688     struct_rusage_ru_maxrss
1689     struct_sockaddr_in6
1690     struct_sockaddr_sa_len
1691     struct_sockaddr_storage
1692     struct_v4l2_frmivalenum_discrete
1693 "
1694
1695 HAVE_LIST="
1696     $ARCH_EXT_LIST
1697     $(add_suffix _external $ARCH_EXT_LIST)
1698     $(add_suffix _inline   $ARCH_EXT_LIST)
1699     $ARCH_FEATURES
1700     $BUILTIN_LIST
1701     $HAVE_LIST_CMDLINE
1702     $HAVE_LIST_PUB
1703     $HEADERS_LIST
1704     $INTRINSICS_LIST
1705     $MATH_FUNCS
1706     $SYSTEM_FEATURES
1707     $SYSTEM_FUNCS
1708     $SYSTEM_LIBRARIES
1709     $THREADS_LIST
1710     $TOOLCHAIN_FEATURES
1711     $TYPES_LIST
1712 "
1713
1714 # options emitted with CONFIG_ prefix but not available on the command line
1715 CONFIG_EXTRA="
1716     aandcttables
1717     ac3dsp
1718     adts_header
1719     audio_frame_queue
1720     audiodsp
1721     blockdsp
1722     bswapdsp
1723     cabac
1724     cbs
1725     cbs_h264
1726     cbs_h265
1727     cbs_mpeg2
1728     dirac_parse
1729     dvprofile
1730     faandct
1731     faanidct
1732     fdctdsp
1733     flacdsp
1734     fmtconvert
1735     g722dsp
1736     gmp
1737     golomb
1738     gplv3
1739     h263dsp
1740     h264chroma
1741     h264dsp
1742     h264parse
1743     h264pred
1744     h264qpel
1745     hevcparse
1746     hpeldsp
1747     huffman
1748     huffyuvdsp
1749     huffyuvencdsp
1750     idctdsp
1751     iirfilter
1752     imdct15
1753     intrax8
1754     iso_media
1755     ividsp
1756     jpegtables
1757     lgplv3
1758     libx262
1759     libxcb_shape
1760     lpc
1761     lzf
1762     me_cmp
1763     mpeg_er
1764     mpegaudio
1765     mpegaudiodsp
1766     mpegaudioheader
1767     mpegvideo
1768     mpegvideoenc
1769     mss34dsp
1770     pixblockdsp
1771     qpeldsp
1772     qsv
1773     qsvdec
1774     qsvenc
1775     qsvvpp
1776     rangecoder
1777     riffdec
1778     riffenc
1779     rtpdec
1780     rtpenc_chain
1781     rv34dsp
1782     sinewin
1783     snappy
1784     srtp
1785     startcode
1786     texturedsp
1787     texturedspenc
1788     tpeldsp
1789     vaapi_encode
1790     vc1dsp
1791     videodsp
1792     vp3dsp
1793     vp56dsp
1794     vp8dsp
1795     wma_freqs
1796     wmv2dsp
1797 "
1798
1799 CMDLINE_SELECT="
1800     $ARCH_EXT_LIST
1801     $CONFIG_LIST
1802     $HAVE_LIST_CMDLINE
1803     $THREADS_LIST
1804     asm
1805     cross_compile
1806     debug
1807     extra_warnings
1808     logging
1809     lto
1810     optimizations
1811     rpath
1812 "
1813
1814 PATHS_LIST="
1815     bindir
1816     datadir
1817     docdir
1818     incdir
1819     libdir
1820     mandir
1821     prefix
1822     shlibdir
1823 "
1824
1825 CMDLINE_SET="
1826     $PATHS_LIST
1827     ar
1828     arch
1829     as
1830     cc
1831     objcc
1832     cpu
1833     cross_prefix
1834     custom_allocator
1835     dep_cc
1836     env
1837     extra_version
1838     host_cc
1839     host_cflags
1840     host_extralibs
1841     host_ld
1842     host_ldflags
1843     host_os
1844     ignore_tests
1845     ld
1846     logfile
1847     malloc_prefix
1848     nm
1849     optflags
1850     pkg_config
1851     pkg_config_flags
1852     samples
1853     sysinclude
1854     sysroot
1855     target_exec
1856     target_os
1857     target_path
1858     target_samples
1859     toolchain
1860     x86asmexe
1861 "
1862
1863 CMDLINE_APPEND="
1864     extra_cflags
1865     extra_objcflags
1866     host_cppflags
1867 "
1868
1869 # code dependency declarations
1870
1871 # architecture extensions
1872
1873 armv5te_deps="arm"
1874 armv6_deps="arm"
1875 armv6t2_deps="arm"
1876 armv8_deps="aarch64"
1877 neon_deps_any="aarch64 arm"
1878 intrinsics_neon_deps="neon"
1879 vfp_deps_any="aarch64 arm"
1880 vfpv3_deps="vfp"
1881
1882 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1883
1884 altivec_deps="ppc"
1885 dcbzl_deps="ppc"
1886 ldbrx_deps="ppc"
1887 ppc4xx_deps="ppc"
1888 vsx_deps="altivec"
1889 power8_deps="vsx"
1890
1891 loongson_deps="mips"
1892 mips32r1_deps="mips32"
1893 mips32r2_deps="mips32"
1894 mips32r6_deps="mips32"
1895 mips64r1_deps="mips64"
1896 mips64r2_deps="mips64"
1897 mips64r6_deps="mips64"
1898
1899 vis_deps="sparc"
1900
1901 cpunop_deps="i686"
1902 x86_64_select="i686"
1903 x86_64_suggest="fast_cmov"
1904
1905 amd3dnow_deps="mmx"
1906 amd3dnowext_deps="amd3dnow"
1907 i686_deps="x86"
1908 mmx_deps="x86"
1909 mmxext_deps="mmx"
1910 sse_deps="mmxext"
1911 sse2_deps="sse"
1912 sse3_deps="sse2"
1913 ssse3_deps="sse3"
1914 sse4_deps="ssse3"
1915 sse42_deps="sse4"
1916 avx_deps="sse42"
1917 xop_deps="avx"
1918 fma3_deps="avx"
1919 fma4_deps="avx"
1920 avx2_deps="avx"
1921
1922 mmx_external_deps="x86asm"
1923 mmx_inline_deps="inline_asm x86"
1924 mmx_suggest="mmx_external mmx_inline"
1925
1926 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1927     eval dep=\$${ext}_deps
1928     eval ${ext}_external_deps='"${dep}_external"'
1929     eval ${ext}_inline_deps='"${dep}_inline"'
1930     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1931 done
1932
1933 aligned_stack_if_any="aarch64 ppc x86"
1934 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1935 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1936 fast_unaligned_if_any="aarch64 ppc x86"
1937 simd_align_16_if_any="altivec neon sse"
1938 simd_align_32_if_any="avx"
1939
1940 # system capabilities
1941 symver_if_any="symver_asm_label symver_gnu_asm"
1942 valgrind_backtrace_conflict="optimizations"
1943 valgrind_backtrace_deps="valgrind_valgrind_h"
1944
1945 # threading support
1946 atomics_gcc_if="sync_val_compare_and_swap"
1947 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1948 atomics_win32_if="MemoryBarrier"
1949 atomics_native_if_any="$ATOMICS_LIST"
1950 w32threads_deps="atomics_native"
1951 threads_if_any="$THREADS_LIST"
1952
1953 # subsystems
1954 cbs_h264_select="cbs golomb"
1955 cbs_h265_select="cbs golomb"
1956 cbs_mpeg2_select="cbs"
1957 dct_select="rdft"
1958 dirac_parse_select="golomb"
1959 error_resilience_select="me_cmp"
1960 faandct_deps="faan"
1961 faandct_select="fdctdsp"
1962 faanidct_deps="faan"
1963 faanidct_select="idctdsp"
1964 h264dsp_select="startcode"
1965 hevcparse_select="golomb"
1966 intrax8_select="blockdsp idctdsp"
1967 mdct_select="fft"
1968 rdft_select="fft"
1969 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1970 mpeg_er_select="error_resilience"
1971 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1972 mpegaudiodsp_select="dct"
1973 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1974 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1975 vc1dsp_select="h264chroma qpeldsp startcode"
1976
1977 # decoders / encoders
1978 aac_decoder_select="adts_header imdct15 mdct sinewin"
1979 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1980 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1981 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1982 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1983 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1984 adpcm_g722_decoder_select="g722dsp"
1985 adpcm_g722_encoder_select="g722dsp"
1986 aic_decoder_select="golomb idctdsp"
1987 alac_encoder_select="lpc"
1988 als_decoder_select="bswapdsp"
1989 amrnb_decoder_select="lsp"
1990 amrwb_decoder_select="lsp"
1991 amv_decoder_select="sp5x_decoder"
1992 ape_decoder_select="bswapdsp"
1993 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1994 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1995 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1996 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1997 atrac1_decoder_select="mdct sinewin"
1998 atrac3_decoder_select="mdct"
1999 atrac3p_decoder_select="mdct sinewin"
2000 bink_decoder_select="blockdsp hpeldsp"
2001 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2002 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2003 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2004 clearvideo_decoder_select="idctdsp"
2005 cllc_decoder_select="bswapdsp"
2006 comfortnoise_encoder_select="lpc"
2007 cook_decoder_select="audiodsp mdct sinewin"
2008 cscd_decoder_select="lzo"
2009 cscd_decoder_suggest="zlib"
2010 dca_decoder_select="fmtconvert mdct"
2011 dds_decoder_select="texturedsp"
2012 dnxhd_decoder_select="blockdsp idctdsp"
2013 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2014 dvvideo_decoder_select="dvprofile idctdsp"
2015 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2016 dxa_decoder_deps="zlib"
2017 dxv_decoder_select="lzf texturedsp"
2018 eac3_decoder_select="ac3_decoder"
2019 eac3_encoder_select="ac3_encoder"
2020 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2021 eatgq_decoder_select="aandcttables idctdsp"
2022 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2023 exr_decoder_deps="zlib"
2024 ffv1_decoder_select="rangecoder"
2025 ffv1_encoder_select="rangecoder"
2026 ffvhuff_decoder_select="huffyuv_decoder"
2027 ffvhuff_encoder_select="huffyuv_encoder"
2028 fic_decoder_select="golomb"
2029 flac_decoder_select="flacdsp"
2030 flac_encoder_select="bswapdsp flacdsp lpc"
2031 flashsv_decoder_deps="zlib"
2032 flashsv_encoder_deps="zlib"
2033 flashsv2_decoder_deps="zlib"
2034 flv_decoder_select="h263_decoder"
2035 flv_encoder_select="h263_encoder"
2036 fourxm_decoder_select="blockdsp bswapdsp"
2037 fraps_decoder_select="bswapdsp huffman"
2038 g2m_decoder_deps="zlib"
2039 g2m_decoder_select="blockdsp idctdsp jpegtables"
2040 h261_decoder_select="mpeg_er mpegvideo"
2041 h261_encoder_select="aandcttables mpegvideoenc"
2042 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2043 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2044 h263i_decoder_select="h263_decoder"
2045 h263p_encoder_select="h263_encoder"
2046 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2047 h264_decoder_suggest="error_resilience"
2048 hap_decoder_select="snappy texturedsp"
2049 hap_encoder_deps="libsnappy"
2050 hap_encoder_select="texturedspenc"
2051 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2052 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2053 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2054 iac_decoder_select="imc_decoder"
2055 imc_decoder_select="bswapdsp fft mdct sinewin"
2056 indeo3_decoder_select="hpeldsp"
2057 indeo4_decoder_select="ividsp"
2058 indeo5_decoder_select="ividsp"
2059 interplay_video_decoder_select="hpeldsp"
2060 jpegls_decoder_select="mjpeg_decoder"
2061 jv_decoder_select="blockdsp"
2062 lagarith_decoder_select="huffyuvdsp"
2063 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2064 magicyuv_decoder_select="huffyuvdsp"
2065 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2066 metasound_decoder_select="lsp mdct sinewin"
2067 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2068 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2069 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2070 mjpegb_decoder_select="mjpeg_decoder"
2071 mlp_decoder_select="mlp_parser"
2072 motionpixels_decoder_select="bswapdsp"
2073 mp1_decoder_select="mpegaudio"
2074 mp1float_decoder_select="mpegaudio"
2075 mp2_decoder_select="mpegaudio"
2076 mp2float_decoder_select="mpegaudio"
2077 mp3_decoder_select="mpegaudio"
2078 mp3adu_decoder_select="mpegaudio"
2079 mp3adufloat_decoder_select="mpegaudio"
2080 mp3float_decoder_select="mpegaudio"
2081 mp3on4_decoder_select="mpegaudio"
2082 mp3on4float_decoder_select="mpegaudio"
2083 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2084 mpc8_decoder_select="mpegaudiodsp"
2085 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2086 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2087 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2088 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2089 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2090 mpeg4_encoder_select="h263_encoder"
2091 msa1_decoder_select="mss34dsp"
2092 msmpeg4v1_decoder_select="h263_decoder"
2093 msmpeg4v2_decoder_select="h263_decoder"
2094 msmpeg4v2_encoder_select="h263_encoder"
2095 msmpeg4v3_decoder_select="h263_decoder"
2096 msmpeg4v3_encoder_select="h263_encoder"
2097 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2098 mts2_decoder_select="mss34dsp"
2099 mxpeg_decoder_select="mjpeg_decoder"
2100 nellymoser_decoder_select="mdct sinewin"
2101 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2102 nuv_decoder_select="idctdsp lzo"
2103 on2avc_decoder_select="mdct"
2104 opus_decoder_deps="avresample"
2105 opus_decoder_select="imdct15"
2106 png_decoder_deps="zlib"
2107 png_encoder_deps="zlib"
2108 png_encoder_select="huffyuvencdsp"
2109 prores_decoder_select="idctdsp"
2110 prores_encoder_select="fdctdsp"
2111 qcelp_decoder_select="lsp"
2112 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2113 ra_144_encoder_select="audio_frame_queue lpc"
2114 ralf_decoder_select="golomb"
2115 rscc_decoder_deps="zlib"
2116 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2117 rv10_encoder_select="h263_encoder"
2118 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2119 rv20_encoder_select="h263_encoder"
2120 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2121 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2122 screenpresso_decoder_deps="zlib"
2123 sipr_decoder_select="lsp"
2124 sp5x_decoder_select="mjpeg_decoder"
2125 svq1_decoder_select="hpeldsp"
2126 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2127 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2128 svq3_decoder_suggest="zlib"
2129 tak_decoder_select="audiodsp"
2130 tdsc_decoder_deps="zlib"
2131 tdsc_decoder_select="mjpeg_decoder"
2132 theora_decoder_select="vp3_decoder"
2133 thp_decoder_select="mjpeg_decoder"
2134 tiff_decoder_suggest="zlib"
2135 tiff_encoder_suggest="zlib"
2136 truehd_decoder_select="mlp_decoder"
2137 truemotion2_decoder_select="bswapdsp"
2138 truespeech_decoder_select="bswapdsp"
2139 tscc_decoder_deps="zlib"
2140 txd_decoder_select="texturedsp"
2141 twinvq_decoder_select="mdct lsp sinewin"
2142 utvideo_decoder_select="bswapdsp huffyuvdsp"
2143 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2144 vble_decoder_select="huffyuvdsp"
2145 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2146 vc1image_decoder_select="vc1_decoder"
2147 vorbis_decoder_select="mdct"
2148 vorbis_encoder_select="mdct"
2149 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2150 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2151 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2152 vp6a_decoder_select="vp6_decoder"
2153 vp6f_decoder_select="vp6_decoder"
2154 vp7_decoder_select="h264pred videodsp vp8dsp"
2155 vp8_decoder_select="h264pred videodsp vp8dsp"
2156 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2157 webp_decoder_select="vp8_decoder"
2158 wmapro_decoder_select="mdct sinewin wma_freqs"
2159 wmav1_decoder_select="mdct sinewin wma_freqs"
2160 wmav1_encoder_select="mdct sinewin wma_freqs"
2161 wmav2_decoder_select="mdct sinewin wma_freqs"
2162 wmav2_encoder_select="mdct sinewin wma_freqs"
2163 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2164 wmv1_decoder_select="h263_decoder"
2165 wmv1_encoder_select="h263_encoder"
2166 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2167 wmv2_encoder_select="h263_encoder wmv2dsp"
2168 wmv3_decoder_select="vc1_decoder"
2169 wmv3image_decoder_select="wmv3_decoder"
2170 zerocodec_decoder_deps="zlib"
2171 zlib_decoder_deps="zlib"
2172 zlib_encoder_deps="zlib"
2173 zmbv_decoder_deps="zlib"
2174 zmbv_encoder_deps="zlib"
2175
2176 # hardware accelerators
2177 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2178 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2179 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2180 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2181
2182 h263_vaapi_hwaccel_deps="vaapi"
2183 h263_vaapi_hwaccel_select="h263_decoder"
2184 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2185 h264_cuvid_hwaccel_select="h264_decoder"
2186 h264_d3d11va_hwaccel_deps="d3d11va"
2187 h264_d3d11va_hwaccel_select="h264_decoder"
2188 h264_d3d11va2_hwaccel_deps="d3d11va"
2189 h264_d3d11va2_hwaccel_select="h264_decoder"
2190 h264_dxva2_hwaccel_deps="dxva2"
2191 h264_dxva2_hwaccel_select="h264_decoder"
2192 h264_mmal_hwaccel_deps="mmal"
2193 h264_qsv_hwaccel_deps="libmfx"
2194 h264_vaapi_hwaccel_deps="vaapi"
2195 h264_vaapi_hwaccel_select="h264_decoder"
2196 h264_vda_hwaccel_deps="vda"
2197 h264_vda_hwaccel_select="h264_decoder"
2198 h264_vda_old_hwaccel_deps="vda"
2199 h264_vda_old_hwaccel_select="h264_decoder"
2200 h264_vdpau_hwaccel_deps="vdpau"
2201 h264_vdpau_hwaccel_select="h264_decoder"
2202 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2203 hevc_cuvid_hwaccel_select="hevc_decoder"
2204 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2205 hevc_d3d11va_hwaccel_select="hevc_decoder"
2206 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2207 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2208 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2209 hevc_dxva2_hwaccel_select="hevc_decoder"
2210 hevc_qsv_hwaccel_deps="libmfx"
2211 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2212 hevc_vaapi_hwaccel_select="hevc_decoder"
2213 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2214 hevc_vdpau_hwaccel_select="hevc_decoder"
2215 mpeg1_vdpau_hwaccel_deps="vdpau"
2216 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2217 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2218 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2219 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2220 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2221 mpeg2_dxva2_hwaccel_deps="dxva2"
2222 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2223 mpeg2_mmal_hwaccel_deps="mmal"
2224 mpeg2_qsv_hwaccel_deps="libmfx"
2225 mpeg2_vaapi_hwaccel_deps="vaapi"
2226 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2227 mpeg2_vdpau_hwaccel_deps="vdpau"
2228 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2229 mpeg4_vaapi_hwaccel_deps="vaapi"
2230 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2231 mpeg4_vdpau_hwaccel_deps="vdpau"
2232 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2233 vc1_d3d11va_hwaccel_deps="d3d11va"
2234 vc1_d3d11va_hwaccel_select="vc1_decoder"
2235 vc1_d3d11va2_hwaccel_deps="d3d11va"
2236 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2237 vc1_dxva2_hwaccel_deps="dxva2"
2238 vc1_dxva2_hwaccel_select="vc1_decoder"
2239 vc1_mmal_hwaccel_deps="mmal"
2240 vc1_qsv_hwaccel_deps="libmfx"
2241 vc1_vaapi_hwaccel_deps="vaapi"
2242 vc1_vaapi_hwaccel_select="vc1_decoder"
2243 vc1_vdpau_hwaccel_deps="vdpau"
2244 vc1_vdpau_hwaccel_select="vc1_decoder"
2245 vp8_qsv_hwaccel_deps="libmfx"
2246 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2247 vp8_vaapi_hwaccel_select="vp8_decoder"
2248 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2249 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2250 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2251 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2252 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2253
2254 # hardware-accelerated codecs
2255 nvenc_deps_any="libdl LoadLibrary"
2256 omx_deps="libdl pthreads"
2257 omx_rpi_select="omx"
2258 qsv_deps="libmfx"
2259 qsvdec_select="qsv"
2260 qsvenc_select="qsv"
2261 qsvvpp_select="qsv"
2262 vaapi_encode_deps="vaapi"
2263
2264 hwupload_cuda_filter_deps="cuda"
2265 scale_npp_filter_deps="cuda libnpp"
2266
2267 h264_mmal_decoder_deps="mmal"
2268 h264_nvenc_encoder_deps="nvenc"
2269 h264_omx_encoder_deps="omx"
2270 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2271 h264_qsv_encoder_select="qsvenc"
2272 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2273 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2274 hevc_nvenc_encoder_deps="nvenc"
2275 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2276 hevc_qsv_encoder_select="hevcparse qsvenc"
2277 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2278 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2279 mjpeg_qsv_encoder_deps="libmfx"
2280 mjpeg_qsv_encoder_select="qsvenc"
2281 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2282 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2283 mpeg2_mmal_decoder_deps="mmal"
2284 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2285 mpeg2_qsv_encoder_select="qsvenc"
2286 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2287 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2288 mpeg4_omx_encoder_deps="omx"
2289 vc1_mmal_decoder_deps="mmal"
2290 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2291 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2292 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2293 vp8_vaapi_encoder_select="vaapi_encode"
2294 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2295 vp9_vaapi_encoder_select="vaapi_encode"
2296
2297 nvenc_h264_encoder_select="h264_nvenc_encoder"
2298 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2299
2300 # parsers
2301 aac_parser_select="adts_header"
2302 h264_parser_select="golomb h264dsp h264parse"
2303 hevc_parser_select="hevcparse"
2304 mpegaudio_parser_select="mpegaudioheader"
2305 mpegvideo_parser_select="mpegvideo"
2306 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2307 vc1_parser_select="vc1dsp"
2308
2309 # bitstream_filters
2310 aac_adtstoasc_bsf_select="adts_header"
2311 h264_metadata_bsf_select="cbs_h264"
2312 h264_redundant_pps_bsf_select="cbs_h264"
2313 hevc_metadata_bsf_select="cbs_h265"
2314 mjpeg2jpeg_bsf_select="jpegtables"
2315 mpeg2_metadata_bsf_select="cbs_mpeg2"
2316 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2317
2318 # external libraries
2319 avisynth_deps="LoadLibrary"
2320 avxsynth_deps="libdl"
2321 avisynth_demuxer_deps_any="avisynth avxsynth"
2322 avisynth_demuxer_select="riffdec"
2323 libdcadec_decoder_deps="libdcadec"
2324 libfaac_encoder_deps="libfaac"
2325 libfaac_encoder_select="audio_frame_queue"
2326 libfdk_aac_decoder_deps="libfdk_aac"
2327 libfdk_aac_encoder_deps="libfdk_aac"
2328 libfdk_aac_encoder_select="audio_frame_queue"
2329 libgsm_decoder_deps="libgsm"
2330 libgsm_encoder_deps="libgsm"
2331 libgsm_ms_decoder_deps="libgsm"
2332 libgsm_ms_encoder_deps="libgsm"
2333 libilbc_decoder_deps="libilbc"
2334 libilbc_encoder_deps="libilbc"
2335 libkvazaar_encoder_deps="libkvazaar"
2336 libmp3lame_encoder_deps="libmp3lame"
2337 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2338 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2339 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2340 libopencore_amrnb_encoder_select="audio_frame_queue"
2341 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2342 libopenh264_decoder_deps="libopenh264"
2343 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2344 libopenh264_encoder_deps="libopenh264"
2345 libopenjpeg_decoder_deps="libopenjpeg"
2346 libopenjpeg_encoder_deps="libopenjpeg"
2347 libopus_decoder_deps="libopus"
2348 libopus_encoder_deps="libopus"
2349 libopus_encoder_select="audio_frame_queue"
2350 libschroedinger_decoder_deps="libschroedinger"
2351 libschroedinger_encoder_deps="libschroedinger"
2352 libspeex_decoder_deps="libspeex"
2353 libspeex_encoder_deps="libspeex"
2354 libspeex_encoder_select="audio_frame_queue"
2355 libtheora_encoder_deps="libtheora"
2356 libtwolame_encoder_deps="libtwolame"
2357 libvo_aacenc_encoder_deps="libvo_aacenc"
2358 libvo_aacenc_encoder_select="audio_frame_queue"
2359 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2360 libvorbis_encoder_deps="libvorbis"
2361 libvorbis_encoder_select="audio_frame_queue"
2362 libvpx_vp8_decoder_deps="libvpx"
2363 libvpx_vp8_encoder_deps="libvpx"
2364 libvpx_vp9_decoder_deps="libvpx"
2365 libvpx_vp9_encoder_deps="libvpx"
2366 libwavpack_encoder_deps="libwavpack"
2367 libwavpack_encoder_select="audio_frame_queue"
2368 libwebp_encoder_deps="libwebp"
2369 libx262_encoder_deps="libx262"
2370 libx264_encoder_deps="libx264"
2371 libx265_encoder_deps="libx265"
2372 libxavs_encoder_deps="libxavs"
2373 libxvid_encoder_deps="libxvid mkstemp"
2374
2375 # demuxers / muxers
2376 ac3_demuxer_select="ac3_parser"
2377 asf_demuxer_select="riffdec"
2378 asf_muxer_select="riffenc"
2379 asf_stream_muxer_select="asf_muxer"
2380 avi_demuxer_select="iso_media riffdec"
2381 avi_muxer_select="riffenc"
2382 caf_demuxer_select="iso_media riffdec"
2383 dash_muxer_select="mp4_muxer"
2384 dirac_demuxer_select="dirac_parser"
2385 dv_demuxer_select="dvprofile"
2386 dv_muxer_select="dvprofile"
2387 dxa_demuxer_select="riffdec"
2388 eac3_demuxer_select="ac3_parser"
2389 f4v_muxer_select="mov_muxer"
2390 flac_demuxer_select="flac_parser"
2391 hds_muxer_select="flv_muxer"
2392 hls_muxer_select="mpegts_muxer"
2393 ipod_muxer_select="mov_muxer"
2394 ismv_muxer_select="mov_muxer"
2395 matroska_audio_muxer_select="matroska_muxer"
2396 matroska_demuxer_select="iso_media riffdec"
2397 matroska_demuxer_suggest="bzlib lzo zlib"
2398 matroska_muxer_select="iso_media riffenc"
2399 mmf_muxer_select="riffenc"
2400 mov_demuxer_select="iso_media riffdec"
2401 mov_demuxer_suggest="zlib"
2402 mov_muxer_select="iso_media riffenc rtpenc_chain"
2403 mp3_demuxer_select="mpegaudio_parser"
2404 mp3_muxer_select="mpegaudioheader"
2405 mp4_muxer_select="mov_muxer"
2406 mpegts_demuxer_select="iso_media"
2407 mpegts_muxer_select="adts_muxer latm_muxer"
2408 mpegtsraw_demuxer_select="mpegts_demuxer"
2409 mxf_d10_muxer_select="mxf_muxer"
2410 nut_muxer_select="riffenc"
2411 nuv_demuxer_select="riffdec"
2412 oga_muxer_select="ogg_muxer"
2413 ogg_demuxer_select="dirac_parse"
2414 opus_muxer_select="ogg_muxer"
2415 psp_muxer_select="mov_muxer"
2416 rtp_demuxer_select="sdp_demuxer"
2417 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2418 rtsp_demuxer_select="http_protocol rtpdec"
2419 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2420 sap_demuxer_select="sdp_demuxer"
2421 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2422 sdp_demuxer_select="rtpdec"
2423 smoothstreaming_muxer_select="ismv_muxer"
2424 spdif_demuxer_select="adts_header"
2425 spdif_muxer_select="adts_header"
2426 spx_muxer_select="ogg_muxer"
2427 swf_demuxer_suggest="zlib"
2428 tak_demuxer_select="tak_parser"
2429 tg2_muxer_select="mov_muxer"
2430 tgp_muxer_select="mov_muxer"
2431 w64_demuxer_select="wav_demuxer"
2432 wav_demuxer_select="riffdec"
2433 wav_muxer_select="riffenc"
2434 webm_muxer_select="iso_media riffenc"
2435 wtv_demuxer_select="mpegts_demuxer riffdec"
2436 xmv_demuxer_select="riffdec"
2437 xwma_demuxer_select="riffdec"
2438
2439 # indevs
2440 alsa_indev_deps="alsa"
2441 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2442 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2443 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2444 fbdev_indev_deps="linux_fb_h"
2445 jack_indev_deps="libjack"
2446 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2447 libcdio_indev_deps="libcdio"
2448 libdc1394_indev_deps="libdc1394"
2449 oss_indev_deps_any="sys_soundcard_h"
2450 pulse_indev_deps="libpulse"
2451 sndio_indev_deps="sndio"
2452 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2453 vfwcap_indev_deps="vfw32 vfwcap_defines"
2454 xcbgrab_indev_deps="libxcb libxcb_shape"
2455 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2456
2457 # protocols
2458 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2459 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2460 ffrtmpcrypt_protocol_select="tcp_protocol"
2461 ffrtmphttp_protocol_conflict="librtmp_protocol"
2462 ffrtmphttp_protocol_select="http_protocol"
2463 gopher_protocol_select="network"
2464 http_protocol_select="tcp_protocol"
2465 http_protocol_suggest="zlib"
2466 httpproxy_protocol_select="tcp_protocol"
2467 httpproxy_protocol_suggest="zlib"
2468 https_protocol_select="tls_protocol"
2469 https_protocol_suggest="zlib"
2470 icecast_protocol_select="http_protocol"
2471 librtmp_protocol_deps="librtmp"
2472 librtmpe_protocol_deps="librtmp"
2473 librtmps_protocol_deps="librtmp"
2474 librtmpt_protocol_deps="librtmp"
2475 librtmpte_protocol_deps="librtmp"
2476 mmsh_protocol_select="http_protocol"
2477 mmst_protocol_select="network"
2478 rtmp_protocol_conflict="librtmp_protocol"
2479 rtmp_protocol_select="tcp_protocol"
2480 rtmp_protocol_suggest="zlib"
2481 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2482 rtmpe_protocol_suggest="zlib"
2483 rtmps_protocol_conflict="librtmp_protocol"
2484 rtmps_protocol_select="tls_protocol"
2485 rtmps_protocol_suggest="zlib"
2486 rtmpt_protocol_select="ffrtmphttp_protocol"
2487 rtmpt_protocol_suggest="zlib"
2488 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2489 rtmpte_protocol_suggest="zlib"
2490 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2491 rtmpts_protocol_suggest="zlib"
2492 rtp_protocol_select="udp_protocol"
2493 sctp_protocol_deps="struct_sctp_event_subscribe"
2494 sctp_protocol_select="network"
2495 srtp_protocol_select="rtp_protocol srtp"
2496 tcp_protocol_select="network"
2497 tls_protocol_deps_any="gnutls openssl"
2498 tls_protocol_select="tcp_protocol"
2499 udp_protocol_select="network"
2500 unix_protocol_deps="sys_un_h"
2501 unix_protocol_select="network"
2502
2503 # filters
2504 asyncts_filter_deps="avresample"
2505 blackframe_filter_deps="gpl"
2506 boxblur_filter_deps="gpl"
2507 bs2b_filter_deps="libbs2b"
2508 cropdetect_filter_deps="gpl"
2509 deinterlace_qsv_filter_deps="libmfx"
2510 deinterlace_vaapi_filter_deps="vaapi"
2511 delogo_filter_deps="gpl"
2512 drawtext_filter_deps="libfreetype"
2513 drawtext_filter_suggest="libfontconfig"
2514 frei0r_filter_deps="frei0r libdl"
2515 frei0r_src_filter_deps="frei0r libdl"
2516 hdcd_filter_deps="libhdcd"
2517 hqdn3d_filter_deps="gpl"
2518 interlace_filter_deps="gpl"
2519 movie_filter_deps="avcodec avformat"
2520 ocv_filter_deps="libopencv"
2521 overlay_qsv_filter_deps="libmfx"
2522 overlay_qsv_filter_select="qsvvpp"
2523 resample_filter_deps="avresample"
2524 scale_filter_deps="swscale"
2525 scale_qsv_filter_deps="libmfx"
2526 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2527 vpp_qsv_filter_deps="libmfx"
2528 vpp_qsv_filter_select="qsvvpp"
2529
2530 # examples
2531 decode_audio_example_deps="avcodec avutil"
2532 decode_video_example_deps="avcodec avutil"
2533 encode_audio_example_deps="avcodec avutil"
2534 encode_video_example_deps="avcodec avutil"
2535 filter_audio_example_deps="avfilter avutil"
2536 metadata_example_deps="avformat avutil"
2537 output_example_deps="avcodec avformat avresample avutil swscale"
2538 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2539 transcode_aac_example_deps="avcodec avformat avresample"
2540
2541 # EXTRALIBS_LIST
2542 cpu_init_extralibs="pthreads_extralibs"
2543 cws2fws_extralibs="zlib_extralibs"
2544
2545 # libraries, in linking order
2546 avcodec_deps="avutil"
2547 avcodec_select="null_bsf"
2548 avdevice_deps="avformat avcodec avutil"
2549 avfilter_deps="avutil"
2550 avformat_deps="avcodec avutil"
2551 avformat_suggest="network"
2552 avresample_deps="avutil"
2553 swscale_deps="avutil"
2554
2555 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2556 avdevice_extralibs="libm_extralibs"
2557 avformat_extralibs="libm_extralibs"
2558 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2559 avresample_extralibs="libm_extralibs"
2560 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"
2561 swscale_extralibs="libm_extralibs"
2562
2563 # programs
2564 avconv_deps="avcodec avfilter avformat avresample swscale"
2565 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2566                fps_filter null_filter resample_filter scale_filter
2567                trim_filter"
2568 avconv_suggest="psapi shell32"
2569 avplay_deps="avcodec avfilter avformat avresample sdl"
2570 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2571 avplay_suggest="shell32"
2572 avprobe_deps="avcodec avformat"
2573 avprobe_suggest="shell32"
2574
2575 # documentation
2576 pod2man_deps="doc"
2577 texi2html_deps="doc"
2578
2579 # default parameters
2580
2581 logfile="avbuild/config.log"
2582
2583 # installation paths
2584 prefix_default="/usr/local"
2585 bindir_default='${prefix}/bin'
2586 datadir_default='${prefix}/share/avconv'
2587 docdir_default='${prefix}/share/doc/libav'
2588 incdir_default='${prefix}/include'
2589 libdir_default='${prefix}/lib'
2590 mandir_default='${prefix}/share/man'
2591 shlibdir_default="$libdir_default"
2592
2593 # toolchain
2594 ar_default="ar"
2595 cc_default="gcc"
2596 host_cc_default="gcc"
2597 x86asmexe_default="nasm"
2598 ln_s="ln -s -f"
2599 nm_default="nm -g"
2600 pkg_config_default=pkg-config
2601 ranlib="ranlib"
2602 strip="strip"
2603 version_script='--version-script'
2604
2605 # machine
2606 arch_default=$(uname -m)
2607 cpu="generic"
2608 intrinsics="none"
2609
2610 # OS
2611 target_os_default=$(tolower $(uname -s))
2612 host_os=$target_os_default
2613
2614 # configurable options
2615 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2616
2617 enable asm
2618 enable debug
2619 enable doc
2620 enable faan faandct faanidct
2621 enable optimizations
2622 enable safe_bitstream_reader
2623 enable static
2624 enable swscale_alpha
2625 enable valgrind_backtrace
2626
2627 # By default, enable only those hwaccels that have no external dependencies.
2628 enable d3d11va dxva2 vda vdpau
2629
2630 # internal components are enabled by default
2631 enable $EXTRALIBS_LIST
2632
2633 # Avoid external, non-system, libraries getting enabled by dependency resolution
2634 disable $EXTERNAL_LIBRARY_LIST
2635
2636 # build settings
2637 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2638 LIBPREF="lib"
2639 LIBSUF=".a"
2640 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2641 SLIBPREF="lib"
2642 SLIBSUF=".so"
2643 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2644 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2645 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2646 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2647 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2648 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2649 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2650
2651 asflags_filter=echo
2652 cflags_filter=echo
2653 ldflags_filter=echo
2654
2655 AS_C='-c'
2656 AS_O='-o $@'
2657 CC_C='-c'
2658 CC_E='-E -o $@'
2659 CC_O='-o $@'
2660 OBJCC_C='-c'
2661 OBJCC_E='-E -o $@'
2662 OBJCC_O='-o $@'
2663 X86ASM_O='-o $@'
2664 LD_O='-o $@'
2665 LD_LIB='-l%'
2666 LD_PATH='-L'
2667 HOSTCC_C='-c'
2668 HOSTCC_E='-E -o $@'
2669 HOSTCC_O='-o $@'
2670 HOSTLD_O='-o $@'
2671
2672 host_extralibs='-lm'
2673 host_cflags_filter=echo
2674 host_ldflags_filter=echo
2675
2676 target_path='$(CURDIR)'
2677
2678 # since the object filename is not given with the -MM flag, the compiler
2679 # is only able to print the basename, and we must add the path ourselves
2680 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2681 DEPFLAGS='-MM'
2682
2683 mkdir -p avbuild
2684
2685 # find source path
2686 if test -f configure; then
2687     source_path=.
2688 else
2689     source_path=$(cd $(dirname "$0"); pwd)
2690     echo "$source_path" | grep -q '[[:blank:]]' &&
2691         die "Out of tree builds are impossible with whitespace in source path."
2692     test -e "$source_path/config.h" &&
2693         die "Out of tree builds are impossible with config.h in source dir."
2694 fi
2695
2696 for v in "$@"; do
2697     r=${v#*=}
2698     l=${v%"$r"}
2699     r=$(sh_quote "$r")
2700     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2701 done
2702
2703 find_things(){
2704     thing=$1
2705     pattern=$2
2706     file=$source_path/$3
2707     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2708 }
2709
2710 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2711 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2712 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2713 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2714 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2715 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2716 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2717 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2718
2719 find_things_extern(){
2720     thing=$1
2721     pattern=$2
2722     file=$source_path/$3
2723     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2724 }
2725
2726 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2727 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2728
2729 AVCODEC_COMPONENTS_LIST="
2730     $BSF_LIST
2731     $DECODER_LIST
2732     $ENCODER_LIST
2733     $HWACCEL_LIST
2734     $PARSER_LIST
2735 "
2736
2737 AVDEVICE_COMPONENTS_LIST="
2738     $INDEV_LIST
2739 "
2740
2741 AVFILTER_COMPONENTS_LIST="
2742     $FILTER_LIST
2743 "
2744
2745 AVFORMAT_COMPONENTS_LIST="
2746     $DEMUXER_LIST
2747     $MUXER_LIST
2748     $PROTOCOL_LIST
2749 "
2750
2751 ALL_COMPONENTS="
2752     $AVCODEC_COMPONENTS_LIST
2753     $AVDEVICE_COMPONENTS_LIST
2754     $AVFILTER_COMPONENTS_LIST
2755     $AVFORMAT_COMPONENTS_LIST
2756 "
2757
2758 for n in $COMPONENT_LIST; do
2759     v=$(toupper ${n%s})_LIST
2760     eval enable \$$v
2761     eval ${n}_if_any="\$$v"
2762 done
2763
2764 enable $ARCH_EXT_LIST
2765
2766 die_unknown(){
2767     echo "Unknown option \"$1\"."
2768     echo "See $0 --help for available options."
2769     exit 1
2770 }
2771
2772 print_3_columns() {
2773     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2774 }
2775
2776 show_list() {
2777     suffix=_$1
2778     shift
2779     echo $* | sed s/$suffix//g | print_3_columns
2780     exit 0
2781 }
2782
2783 for opt do
2784     optval="${opt#*=}"
2785     case "$opt" in
2786         --extra-ldflags=*)
2787             add_ldflags $optval
2788         ;;
2789         --extra-ldexeflags=*)
2790             add_ldexeflags $optval
2791         ;;
2792         --extra-ldsoflags=*)
2793             add_ldsoflags $optval
2794         ;;
2795         --extra-libs=*)
2796             add_extralibs $optval
2797         ;;
2798         --disable-devices)
2799             disable $INDEV_LIST
2800         ;;
2801         --enable-debug=*)
2802             debuglevel="$optval"
2803         ;;
2804         --disable-programs)
2805             disable $PROGRAM_LIST
2806         ;;
2807         --disable-everything)
2808             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2809         ;;
2810         --disable-all)
2811             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2812             disable $LIBRARY_LIST $PROGRAM_LIST doc
2813         ;;
2814         --enable-*=*|--disable-*=*)
2815             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2816             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2817             eval list=\$$(toupper $thing)_LIST
2818             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2819             $action $(filter "$name" $list)
2820         ;;
2821         --enable-yasm|--disable-yasm)
2822             warn "The ${opt} option is only provided for compatibility and will be\n"\
2823                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2824             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2825         ;;
2826         --enable-?*|--disable-?*)
2827             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2828             if is_in $option $COMPONENT_LIST; then
2829                 test $action = disable && action=unset
2830                 eval $action \$$(toupper ${option%s})_LIST
2831             elif is_in $option $CMDLINE_SELECT; then
2832                 $action $option
2833             else
2834                 die_unknown $opt
2835             fi
2836         ;;
2837         --list-*)
2838             NAME="${opt#--list-}"
2839             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2840             NAME=${NAME%s}
2841             eval show_list $NAME \$$(toupper $NAME)_LIST
2842         ;;
2843         --help|-h) show_help
2844         ;;
2845         --quiet|-q) quiet=yes
2846         ;;
2847         *)
2848             optname="${opt%%=*}"
2849             optname="${optname#--}"
2850             optname=$(echo "$optname" | sed 's/-/_/g')
2851             if is_in $optname $CMDLINE_SET; then
2852                 eval $optname='$optval'
2853             elif is_in $optname $CMDLINE_APPEND; then
2854                 append $optname "$optval"
2855             else
2856                 die_unknown $opt
2857             fi
2858         ;;
2859     esac
2860 done
2861
2862 for e in $env; do
2863     eval "export $e"
2864 done
2865
2866 disabled logging && logfile=/dev/null
2867
2868 # we need to build at least one lib type
2869 if ! enabled_any static shared; then
2870     cat <<EOF
2871 At least one library type must be built.
2872 Specify --enable-static to build the static libraries or --enable-shared to
2873 build the shared libraries as well. To only build the shared libraries specify
2874 --disable-static in addition to --enable-shared.
2875 EOF
2876     exit 1
2877 fi
2878
2879 # Die early if licensing-related configure options are incompatible.
2880 die_license_disabled() {
2881     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2882 }
2883
2884 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2885 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2886 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2887
2888 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2889
2890 enabled_all gnutls openssl &&
2891     die "GnuTLS and OpenSSL must not be enabled at the same time."
2892
2893 # Disable all the library-specific components if the library itself
2894 # is disabled, see AVCODEC_LIST and following _LIST variables.
2895
2896 disable_components(){
2897     disabled ${1} && disable $(
2898         eval components="\$$(toupper ${1})_COMPONENTS"
2899         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2900     )
2901 }
2902
2903 map 'disable_components $v' $LIBRARY_LIST
2904
2905 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2906 set >> $logfile
2907
2908 case "$toolchain" in
2909     *-asan)
2910         cc_default="${toolchain%-asan}"
2911         add_cflags  -fsanitize=address
2912         add_ldflags -fsanitize=address
2913     ;;
2914     *-msan)
2915         cc_default="${toolchain%-msan}"
2916         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2917         add_ldflags -fsanitize=memory
2918     ;;
2919     *-tsan)
2920         cc_default="${toolchain%-tsan}"
2921         add_cflags  -fsanitize=thread -fPIE
2922         add_ldflags -fsanitize=thread -pie
2923         case "$toolchain" in
2924             gcc-tsan)
2925                 add_cflags  -fPIC
2926                 add_ldflags -fPIC
2927                 ;;
2928         esac
2929     ;;
2930     *-usan)
2931         cc_default="${toolchain%-usan}"
2932         add_cflags  -fsanitize=undefined
2933         add_ldflags -fsanitize=undefined
2934         case "$toolchain" in
2935             clang-usan)
2936                 add_cflags -O1
2937                 ;;
2938         esac
2939     ;;
2940     valgrind-*)
2941         target_exec_default="valgrind"
2942         case "$toolchain" in
2943             valgrind-massif)
2944                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2945                 ;;
2946             valgrind-memcheck)
2947                 target_exec_args="--track-origins=yes --leak-check=full"
2948                 ;;
2949         esac
2950     ;;
2951     msvc)
2952         # Check whether the current MSVC version needs the C99 converter.
2953         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2954         # support enough of C99 to build libav. Default to the new
2955         # behaviour if the regexp was unable to match anything, since this
2956         # successfully parses the version number of existing supported
2957         # versions that require the converter (MSVC 2010 and 2012).
2958         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2959         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2960             cc_default="cl"
2961         else
2962             cc_default="c99wrap cl"
2963         fi
2964         ld_default="$source_path/compat/windows/mslink"
2965         nm_default="dumpbin -symbols"
2966         ar_default="lib"
2967         case "$arch" in
2968         aarch64|arm64)
2969             as_default="armasm64"
2970             ;;
2971         arm*)
2972             as_default="armasm"
2973             ;;
2974         esac
2975         target_os_default="win32"
2976         # Use a relative path for TMPDIR. This makes sure all the
2977         # ffconf temp files are written with a relative path, avoiding
2978         # issues with msys/win32 path conversion for MSVC parameters
2979         # such as -Fo<file> or -out:<file>.
2980         TMPDIR=.
2981     ;;
2982     icl)
2983         cc_default="icl"
2984         ld_default="xilink"
2985         nm_default="dumpbin -symbols"
2986         ar_default="xilib"
2987         target_os_default="win32"
2988         TMPDIR=.
2989     ;;
2990     gcov)
2991         add_cflags  -fprofile-arcs -ftest-coverage
2992         add_ldflags -fprofile-arcs -ftest-coverage
2993     ;;
2994     llvm-cov)
2995         add_cflags -fprofile-arcs -ftest-coverage
2996         add_ldflags --coverage
2997     ;;
2998     hardened)
2999         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3000         add_cflags   -fno-strict-overflow -fstack-protector-all
3001         add_ldflags  -Wl,-z,relro -Wl,-z,now
3002     ;;
3003     ?*)
3004         die "Unknown toolchain $toolchain"
3005     ;;
3006 esac
3007
3008 test -n "$cross_prefix" && enable cross_compile
3009
3010 if enabled cross_compile; then
3011     test -n "$arch" && test -n "$target_os" ||
3012         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3013 fi
3014
3015 ar_default="${cross_prefix}${ar_default}"
3016 cc_default="${cross_prefix}${cc_default}"
3017 objcc_default="${cross_prefix}${objcc_default}"
3018 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3019 nm_default="${cross_prefix}${nm_default}"
3020 pkg_config_default="${cross_prefix}${pkg_config_default}"
3021 ranlib="${cross_prefix}${ranlib}"
3022 strip="${cross_prefix}${strip}"
3023
3024 sysinclude_default="${sysroot}/usr/include"
3025
3026 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3027 enabled cross_compile || host_cc_default=$cc
3028 set_default host_cc
3029
3030 if ! $pkg_config --version >/dev/null 2>&1; then
3031     warn "$pkg_config not found, library detection may fail."
3032     pkg_config=false
3033 fi
3034
3035 exesuf() {
3036     case $1 in
3037         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3038     esac
3039 }
3040
3041 EXESUF=$(exesuf $target_os)
3042 HOSTEXESUF=$(exesuf $host_os)
3043
3044 # set temporary file name
3045 : ${TMPDIR:=$TEMPDIR}
3046 : ${TMPDIR:=$TMP}
3047 : ${TMPDIR:=/tmp}
3048
3049 if ! check_cmd mktemp -u XXXXXX; then
3050     # simple replacement for missing mktemp
3051     # NOT SAFE FOR GENERAL USE
3052     mktemp(){
3053         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3054         echo "$tmpname"
3055         mkdir "$tmpname"
3056     }
3057 fi
3058
3059 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3060     die "Unable to create temporary directory in $TMPDIR."
3061
3062 tmpfile(){
3063     tmp="${AVTMPDIR}/test"$2
3064     (set -C; exec > $tmp) 2> /dev/null ||
3065         die "Unable to create temporary file in $AVTMPDIR."
3066     eval $1=$tmp
3067 }
3068
3069 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3070 trap 'exit 2' INT
3071
3072 tmpfile TMPASM .asm
3073 tmpfile TMPC   .c
3074 tmpfile TMPE   $EXESUF
3075 tmpfile TMPH   .h
3076 tmpfile TMPO   .o
3077 tmpfile TMPS   .S
3078 tmpfile TMPSH  .sh
3079 tmpfile TMPV   .ver
3080
3081 unset -f mktemp
3082
3083 chmod +x $TMPE
3084
3085 # make sure we can execute files in $TMPDIR
3086 cat > $TMPSH 2>> $logfile <<EOF
3087 #! /bin/sh
3088 EOF
3089 chmod +x $TMPSH >> $logfile 2>&1
3090 if ! $TMPSH >> $logfile 2>&1; then
3091     cat <<EOF
3092 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3093 variable to another directory and make sure that it is not mounted noexec.
3094 EOF
3095     die "Sanity test failed."
3096 fi
3097
3098 armasm_flags(){
3099     for flag; do
3100         case $flag in
3101             # Filter out MSVC cl.exe options from cflags that shouldn't
3102             # be passed to gas-preprocessor
3103             -M[TD]*)                                            ;;
3104             *)                  echo $flag                      ;;
3105         esac
3106    done
3107 }
3108
3109 cparser_flags(){
3110     for flag; do
3111         case $flag in
3112             -Wno-switch)             echo -Wno-switch-enum ;;
3113             -Wno-format-zero-length) ;;
3114             -Wdisabled-optimization) ;;
3115             -Wno-pointer-sign)       echo -Wno-other ;;
3116             *)                       echo $flag ;;
3117         esac
3118     done
3119 }
3120
3121 msvc_common_flags(){
3122     for flag; do
3123         case $flag in
3124             # In addition to specifying certain flags under the compiler
3125             # specific filters, they must be specified here as well or else the
3126             # generic catch all at the bottom will print the original flag.
3127             -Wall)                ;;
3128             -Wextra)              ;;
3129             -std=c99)             ;;
3130             # Common flags
3131             -fomit-frame-pointer) ;;
3132             -g)                   echo -Z7 ;;
3133             -fno-math-errno)      ;;
3134             -fno-common)          ;;
3135             -fno-signed-zeros)    ;;
3136             -fPIC)                ;;
3137             -mthumb)              ;;
3138             -march=*)             ;;
3139             -lz)                  echo zlib.lib ;;
3140             -lx264)               echo libx264.lib ;;
3141             -l*)                  echo ${flag#-l}.lib ;;
3142             -L*)                  echo -libpath:${flag#-L} ;;
3143             *)                    echo $flag ;;
3144         esac
3145     done
3146 }
3147
3148 msvc_flags(){
3149     msvc_common_flags "$@"
3150     for flag; do
3151         case $flag in
3152             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3153                                        -wd4554 ;;
3154             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3155                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3156                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3157                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3158         esac
3159     done
3160 }
3161
3162 icl_flags(){
3163     msvc_common_flags "$@"
3164     for flag; do
3165         case $flag in
3166             # Despite what Intel's documentation says -Wall, which is supported
3167             # on Windows, does enable remarks so disable them here.
3168             -Wall)                echo $flag -Qdiag-disable:remark ;;
3169             -std=c99)             echo -Qstd=c99 ;;
3170         esac
3171     done
3172 }
3173
3174 pgi_flags(){
3175     for flag; do
3176         case $flag in
3177             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3178             -fomit-frame-pointer) echo -Mnoframe ;;
3179             -g)                   echo -gopt ;;
3180             *)                    echo $flag ;;
3181         esac
3182     done
3183 }
3184
3185 suncc_flags(){
3186     for flag; do
3187         case $flag in
3188             -march=*|-mcpu=*)
3189                 case "${flag#*=}" in
3190                     native)                   echo -xtarget=native       ;;
3191                     v9|niagara)               echo -xarch=sparc          ;;
3192                     ultrasparc)               echo -xarch=sparcvis       ;;
3193                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3194                     i586|pentium)             echo -xchip=pentium        ;;
3195                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3196                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3197                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3198                     pentium4*)          echo -xtarget=pentium4           ;;
3199                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3200                     *-sse3)             echo -xarch=sse3                 ;;
3201                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3202                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3203                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3204                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3205                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3206                     k8|opteron|athlon64|athlon-fx)
3207                                                echo -xarch=sse2a         ;;
3208                     athlon*)                   echo -xarch=pentium_proa  ;;
3209                 esac
3210                 ;;
3211             -std=c99)             echo -xc99              ;;
3212             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3213             -fPIC)                echo -KPIC -xcode=pic32 ;;
3214             -W*,*)                echo $flag              ;;
3215             -f*-*|-W*|-mimpure-text)                      ;;
3216             -shared)              echo -G                 ;;
3217             *)                    echo $flag              ;;
3218         esac
3219     done
3220 }
3221
3222 tms470_flags(){
3223     for flag; do
3224         case $flag in
3225             -march=*|-mcpu=*)
3226                 case "${flag#*=}" in
3227                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3228                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3229                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3230                     armv6*|arm11*)          echo -mv=6   ;;
3231                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3232                                             echo -mv=5e  ;;
3233                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3234                 esac
3235                 ;;
3236             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3237             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3238             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3239             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3240             -msoft-float)   echo --float_support=vfplib       ;;
3241             -O[0-3]|-mf=*)  echo $flag                        ;;
3242             -g)             echo -g -mn                       ;;
3243             -pds=*)         echo $flag                        ;;
3244             -D*|-I*)        echo $flag                        ;;
3245             --gcc|--abi=*)  echo $flag                        ;;
3246             -me)            echo $flag                        ;;
3247         esac
3248     done
3249 }
3250
3251 probe_cc(){
3252     pfx=$1
3253     _cc=$2
3254
3255     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3256     unset _ld_o _ldflags _ld_lib _ld_path
3257     unset _depflags _DEPCMD _DEPFLAGS
3258     _flags_filter=echo
3259
3260     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3261         _type=llvm_gcc
3262         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3263         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3264         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3265         _cflags_speed='-O3'
3266         _cflags_size='-Os'
3267     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3268         _type=gcc
3269         gcc_version=$($_cc --version | head -n1)
3270         gcc_basever=$($_cc -dumpversion)
3271         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3272         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3273         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3274         if ! $_cc -dumpversion | grep -q '^2\.'; then
3275             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3276         fi
3277         _cflags_speed='-O3'
3278         _cflags_size='-Os'
3279     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3280         _type=icc
3281         _ident=$($_cc --version | head -n1)
3282         _depflags='-MMD'
3283         _cflags_speed='-O3'
3284         _cflags_size='-Os'
3285         _cflags_noopt='-O1'
3286     elif $_cc -v 2>&1 | grep -q xlc; then
3287         _type=xlc
3288         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3289         _cflags_speed='-O5'
3290         _cflags_size='-O5 -qcompact'
3291     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3292         test -d "$sysroot" || die "No valid sysroot specified."
3293         _type=armcc
3294         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3295         armcc_conf="$PWD/armcc.conf"
3296         $_cc --arm_linux_configure                 \
3297              --arm_linux_config_file="$armcc_conf" \
3298              --configure_sysroot="$sysroot"        \
3299              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3300              die "Error creating armcc configuration file."
3301         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3302         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3303         as_default="${cross_prefix}gcc"
3304         _depflags='-MMD'
3305         _cflags_speed='-O3'
3306         _cflags_size='-Os'
3307     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3308         _type=tms470
3309         _ident=$($_cc -version | head -n1 | tr -s ' ')
3310         _flags='--gcc --abi=eabi -me'
3311         _cc_e='-ppl -fe=$@'
3312         _cc_o='-fe=$@'
3313         _depflags='-ppa -ppd=$(@:.o=.d)'
3314         _cflags_speed='-O3 -mf=5'
3315         _cflags_size='-O3 -mf=2'
3316         _flags_filter=tms470_flags
3317     elif $_cc -v 2>&1 | grep -q clang; then
3318         _type=clang
3319         _ident=$($_cc --version 2>/dev/null | head -n1)
3320         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3321         _cflags_speed='-O3'
3322         _cflags_size='-Os'
3323     elif $_cc -V 2>&1 | grep -q Sun; then
3324         _type=suncc
3325         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3326         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3327         _DEPFLAGS='-xM1 -xc99'
3328         _ldflags='-std=c99'
3329         _cflags_speed='-O5'
3330         _cflags_size='-O5 -xspace'
3331         _flags_filter=suncc_flags
3332     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3333         _type=pathscale
3334         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3335         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3336         _cflags_speed='-O2'
3337         _cflags_size='-Os'
3338         _flags_filter='filter_out -Wdisabled-optimization'
3339     elif $_cc -v 2>&1 | grep -q Open64; then
3340         _type=open64
3341         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3342         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3343         _cflags_speed='-O2'
3344         _cflags_size='-Os'
3345         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3346     elif $_cc -V 2>&1 | grep -q Portland; then
3347         _type=pgi
3348         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3349         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3350         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3351         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3352         _cflags_noopt="-O1"
3353         _flags_filter=pgi_flags
3354     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3355         _type=armasm
3356         _ident=$($_cc | head -n1)
3357         # 4509: "This form of conditional instruction is deprecated"
3358         _flags="-nologo -ignore 4509"
3359         _flags_filter=armasm_flags
3360     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3361         _type=msvc
3362         _ident=$($_cc 2>&1 | head -n1)
3363         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3364         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3365         _cflags_speed="-O2"
3366         _cflags_size="-O1"
3367         _cflags_noopt="-O1"
3368         if $_cc -nologo- 2>&1 | grep -q Linker; then
3369             _ld_o='-out:$@'
3370         else
3371             _ld_o='-Fe$@'
3372         fi
3373         _cc_o='-Fo$@'
3374         _cc_e='-P -Fi$@'
3375         _flags_filter=msvc_flags
3376         _ld_lib='lib%.a'
3377         _ld_path='-libpath:'
3378         _flags='-nologo'
3379     elif $_cc 2>&1 | grep -q Intel; then
3380         _type=icl
3381         _ident=$($_cc 2>&1 | head -n1)
3382         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3383         # Not only is O3 broken on 13.x+ but it is slower on all previous
3384         # versions (tested) as well.
3385         _cflags_speed="-O2"
3386         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3387         if $_cc 2>&1 | grep -q Linker; then
3388             _ld_o='-out:$@'
3389         else
3390             _ld_o='-Fe$@'
3391         fi
3392         _cc_o='-Fo$@'
3393         _cc_e='-P'
3394         _flags_filter=icl_flags
3395         _ld_lib='lib%.a'
3396         _ld_path='-libpath:'
3397         # -Qdiag-error to make icl error when seeing certain unknown arguments
3398         _flags='-nologo -Qdiag-error:4044,10157'
3399         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3400         # with MSVC which enables it by default.
3401         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3402     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3403         # lld can emulate multiple different linkers; in ms link.exe mode,
3404         # the -? parameter gives the help output which contains an identifyable
3405         # string, while it gives an error in other modes.
3406         _type=lld-link
3407         # The link.exe mode doesn't have a switch for getting the version,
3408         # but we can force it back to gnu mode and get the version from there.
3409         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3410         _ld_o='-out:$@'
3411         _flags_filter=msvc_flags
3412         _ld_lib='lib%.a'
3413         _ld_path='-libpath:'
3414     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3415         _type=cparser
3416         _ident=$($_cc --version | head -n1)
3417         _depflags='-MMD'
3418         _cflags_speed='-O4'
3419         _cflags_size='-O2'
3420         _flags_filter=cparser_flags
3421     fi
3422
3423     eval ${pfx}_type=\$_type
3424     eval ${pfx}_ident=\$_ident
3425 }
3426
3427 set_ccvars(){
3428     eval ${1}_C=\${_cc_c-\${${1}_C}}
3429     eval ${1}_E=\${_cc_e-\${${1}_E}}
3430     eval ${1}_O=\${_cc_o-\${${1}_O}}
3431
3432     if [ -n "$_depflags" ]; then
3433         eval ${1}_DEPFLAGS=\$_depflags
3434     else
3435         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3436         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3437         eval DEP${1}FLAGS=\$_flags
3438     fi
3439 }
3440
3441 probe_cc cc "$cc"
3442 cflags_filter=$_flags_filter
3443 cflags_speed=$_cflags_speed
3444 cflags_size=$_cflags_size
3445 cflags_noopt=$_cflags_noopt
3446 add_cflags $_flags $_cflags
3447 cc_ldflags=$_ldflags
3448 set_ccvars CC
3449
3450 probe_cc hostcc "$host_cc"
3451 host_cflags_filter=$_flags_filter
3452 host_cflags_speed=$_cflags_speed
3453 add_host_cflags  $_flags $_cflags
3454 set_ccvars HOSTCC
3455
3456 test -n "$cc_type" && enable $cc_type ||
3457     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3458
3459 : ${as_default:=$cc}
3460 : ${objcc_default:=$cc}
3461 : ${dep_cc_default:=$cc}
3462 : ${ld_default:=$cc}
3463 : ${host_ld_default:=$host_cc}
3464 set_default ar as objcc dep_cc ld host_ld
3465
3466 probe_cc as "$as"
3467 asflags_filter=$_flags_filter
3468 add_asflags $_flags $_cflags
3469 set_ccvars AS
3470
3471 probe_cc objcc "$objcc"
3472 objcflags_filter=$_flags_filter
3473 add_objcflags $_flags $_cflags
3474 set_ccvars OBJC
3475
3476 probe_cc ld "$ld"
3477 ldflags_filter=$_flags_filter
3478 add_ldflags $_flags $_ldflags
3479 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3480 LD_O=${_ld_o-$LD_O}
3481 LD_LIB=${_ld_lib-$LD_LIB}
3482 LD_PATH=${_ld_path-$LD_PATH}
3483
3484 probe_cc hostld "$host_ld"
3485 host_ldflags_filter=$_flags_filter
3486 add_host_ldflags $_flags $_ldflags
3487 HOSTLD_O=${_ld_o-$HOSTLD_O}
3488
3489 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3490     probe_cc depcc "$dep_cc"
3491     CCDEP=${_DEPCMD:-$DEPCMD}
3492     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3493     DEPCCFLAGS=$_flags
3494 fi
3495
3496 if $ar 2>&1 | grep -q Microsoft; then
3497     arflags="-nologo"
3498     ar_o='-out:$@'
3499 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3500     arflags="rq"
3501     ar_o='$@'
3502 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3503     arflags='-Xany -r -c'
3504     ar_o='$@'
3505 else
3506     arflags="rc"
3507     ar_o='$@'
3508 fi
3509
3510 add_cflags $extra_cflags
3511 add_objcflags $extra_objcflags
3512 add_asflags $extra_cflags
3513
3514 if test -n "$sysroot"; then
3515     case "$cc_type" in
3516         gcc|llvm_gcc|clang)
3517             add_cppflags --sysroot="$sysroot"
3518             add_ldflags --sysroot="$sysroot"
3519         ;;
3520         tms470)
3521             add_cppflags -I"$sysinclude"
3522             add_ldflags  --sysroot="$sysroot"
3523         ;;
3524     esac
3525 fi
3526
3527 if test "$cpu" = host; then
3528     enabled cross_compile &&
3529         die "--cpu=host makes no sense when cross-compiling."
3530
3531     case "$cc_type" in
3532         gcc|llvm_gcc)
3533             check_native(){
3534                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3535                 sed -n "/cc1.*$1=/{
3536                             s/.*$1=\\([^ ]*\\).*/\\1/
3537                             p
3538                             q
3539                         }" $TMPE
3540             }
3541             cpu=$(check_native -march || check_native -mcpu)
3542         ;;
3543     esac
3544
3545     test "${cpu:-host}" = host &&
3546         die "--cpu=host not supported with compiler $cc"
3547 fi
3548
3549 # Deal with common $arch aliases
3550 case "$arch" in
3551     aarch64|arm64)
3552         arch="aarch64"
3553     ;;
3554     arm*)
3555         arch="arm"
3556     ;;
3557     mips*|IP*)
3558         case "$arch" in
3559         *el)
3560             add_cppflags -EL
3561             add_ldflags -EL
3562         ;;
3563         *eb)
3564             add_cppflags -EB
3565             add_ldflags -EB
3566         ;;
3567         esac
3568         arch="mips"
3569     ;;
3570     parisc*|hppa*)
3571         arch="parisc"
3572     ;;
3573     "Power Macintosh"|ppc*|powerpc*)
3574         arch="ppc"
3575     ;;
3576     s390|s390x)
3577         arch="s390"
3578     ;;
3579     sh4|sh)
3580         arch="sh4"
3581     ;;
3582     sun4u|sparc*)
3583         arch="sparc"
3584     ;;
3585     tilegx|tile-gx)
3586         arch="tilegx"
3587     ;;
3588     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3589         arch="x86"
3590     ;;
3591 esac
3592
3593 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3594 enable $arch
3595
3596 # Add processor-specific flags
3597 if enabled aarch64; then
3598
3599     case $cpu in
3600         armv*)
3601             cpuflags="-march=$cpu"
3602         ;;
3603         *)
3604             cpuflags="-mcpu=$cpu"
3605         ;;
3606     esac
3607
3608 elif enabled alpha; then
3609
3610     cpuflags="-mcpu=$cpu"
3611
3612 elif enabled arm; then
3613
3614     check_arm_arch() {
3615         check_cpp_condition stddef.h \
3616             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3617             $cpuflags
3618     }
3619
3620     probe_arm_arch() {
3621         if   check_arm_arch 4;        then echo armv4
3622         elif check_arm_arch 4T;       then echo armv4t
3623         elif check_arm_arch 5;        then echo armv5
3624         elif check_arm_arch 5E;       then echo armv5e
3625         elif check_arm_arch 5T;       then echo armv5t
3626         elif check_arm_arch 5TE;      then echo armv5te
3627         elif check_arm_arch 5TEJ;     then echo armv5te
3628         elif check_arm_arch 6;        then echo armv6
3629         elif check_arm_arch 6J;       then echo armv6j
3630         elif check_arm_arch 6K;       then echo armv6k
3631         elif check_arm_arch 6Z;       then echo armv6z
3632         elif check_arm_arch 6ZK;      then echo armv6zk
3633         elif check_arm_arch 6T2;      then echo armv6t2
3634         elif check_arm_arch 7;        then echo armv7
3635         elif check_arm_arch 7A  7_A;  then echo armv7-a
3636         elif check_arm_arch 7S;       then echo armv7-a
3637         elif check_arm_arch 7R  7_R;  then echo armv7-r
3638         elif check_arm_arch 7M  7_M;  then echo armv7-m
3639         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3640         elif check_arm_arch 8A  8_A;  then echo armv8-a
3641         fi
3642     }
3643
3644     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3645
3646     case $cpu in
3647         armv*)
3648             cpuflags="-march=$cpu"
3649             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3650         ;;
3651         *)
3652             cpuflags="-mcpu=$cpu"
3653             case $cpu in
3654                 cortex-a*)                               subarch=armv7a  ;;
3655                 cortex-r*)                               subarch=armv7r  ;;
3656                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3657                 arm11*)                                  subarch=armv6   ;;
3658                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3659                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3660                 *)                             subarch=$(probe_arm_arch) ;;
3661             esac
3662         ;;
3663     esac
3664
3665     case "$subarch" in
3666         armv5t*)    enable fast_clz                ;;
3667         armv[6-8]*) enable fast_clz fast_unaligned ;;
3668     esac
3669
3670 elif enabled avr32; then
3671
3672     case $cpu in
3673         ap7[02]0[0-2])
3674             subarch="avr32_ap"
3675             cpuflags="-mpart=$cpu"
3676         ;;
3677         ap)
3678             subarch="avr32_ap"
3679             cpuflags="-march=$cpu"
3680         ;;
3681         uc3[ab]*)
3682             subarch="avr32_uc"
3683             cpuflags="-mcpu=$cpu"
3684         ;;
3685         uc)
3686             subarch="avr32_uc"
3687             cpuflags="-march=$cpu"
3688         ;;
3689     esac
3690
3691 elif enabled bfin; then
3692
3693     cpuflags="-mcpu=$cpu"
3694
3695 elif enabled mips; then
3696
3697     cpuflags="-march=$cpu"
3698
3699 elif enabled ppc; then
3700
3701     disable ldbrx
3702
3703     case $(tolower $cpu) in
3704         601|ppc601|powerpc601)
3705             cpuflags="-mcpu=601"
3706             disable altivec
3707         ;;
3708         603*|ppc603*|powerpc603*)
3709             cpuflags="-mcpu=603"
3710             disable altivec
3711         ;;
3712         604*|ppc604*|powerpc604*)
3713             cpuflags="-mcpu=604"
3714             disable altivec
3715         ;;
3716         g3|75*|ppc75*|powerpc75*)
3717             cpuflags="-mcpu=750"
3718             disable altivec
3719         ;;
3720         g4|745*|ppc745*|powerpc745*)
3721             cpuflags="-mcpu=7450"
3722             disable vsx
3723         ;;
3724         74*|ppc74*|powerpc74*)
3725             cpuflags="-mcpu=7400"
3726             disable vsx
3727         ;;
3728         g5|970|ppc970|powerpc970)
3729             cpuflags="-mcpu=970"
3730             disable vsx
3731         ;;
3732         power[3-6]*)
3733             cpuflags="-mcpu=$cpu"
3734             disable vsx
3735         ;;
3736         power[7-8]*)
3737             cpuflags="-mcpu=$cpu"
3738             enable ldbrx
3739         ;;
3740         cell)
3741             cpuflags="-mcpu=cell"
3742             enable ldbrx
3743             disable vsx
3744         ;;
3745         e500mc)
3746             cpuflags="-mcpu=e500mc"
3747             disable altivec
3748         ;;
3749         e500v2)
3750             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3751             disable altivec
3752             disable dcbzl
3753         ;;
3754         e500)
3755             cpuflags="-mcpu=8540 -mhard-float"
3756             disable altivec
3757             disable dcbzl
3758         ;;
3759     esac
3760
3761 elif enabled sparc; then
3762
3763     case $cpu in
3764         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3765             cpuflags="-mcpu=$cpu"
3766         ;;
3767         ultrasparc*|niagara[234])
3768             cpuflags="-mcpu=$cpu"
3769         ;;
3770     esac
3771
3772 elif enabled x86; then
3773
3774     case $cpu in
3775         i[345]86|pentium)
3776             cpuflags="-march=$cpu"
3777             disable i686
3778             disable mmx
3779         ;;
3780         # targets that do NOT support nopl and conditional mov (cmov)
3781         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3782             cpuflags="-march=$cpu"
3783             disable i686
3784         ;;
3785         # targets that do support nopl and conditional mov (cmov)
3786         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3787             cpuflags="-march=$cpu"
3788             enable i686
3789             enable fast_cmov
3790         ;;
3791         # targets that do support conditional mov but on which it's slow
3792         pentium4|pentium4m|prescott|nocona)
3793             cpuflags="-march=$cpu"
3794             enable i686
3795             disable fast_cmov
3796         ;;
3797     esac
3798
3799 fi
3800
3801 if [ "$cpu" != generic ]; then
3802     add_cflags  $cpuflags
3803     add_asflags $cpuflags
3804     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3805 fi
3806
3807 # compiler sanity check
3808 check_exec <<EOF
3809 int main(void){ return 0; }
3810 EOF
3811 if test "$?" != 0; then
3812     echo "$cc is unable to create an executable file."
3813     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3814         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3815         echo "Only do this if you know what cross compiling means."
3816     fi
3817     die "C compiler test failed."
3818 fi
3819
3820 add_cppflags -D_ISOC99_SOURCE
3821
3822 # some compilers silently accept -std=c11, so we also need to check that the
3823 # version macro is defined properly
3824 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3825     add_cflags -std=c11 ||
3826     check_cflags -std=c99
3827
3828 check_cppflags -D_FILE_OFFSET_BITS=64
3829 check_cppflags -D_LARGEFILE_SOURCE
3830
3831 add_host_cppflags -D_ISOC99_SOURCE
3832 check_host_cflags -std=c99
3833 check_host_cflags -Wall
3834 check_host_cflags $host_cflags_speed
3835
3836 check_64bit(){
3837     arch32=$1
3838     arch64=$2
3839     expr=$3
3840     check_code cc "" "int test[2*($expr) - 1]" &&
3841         subarch=$arch64 || subarch=$arch32
3842 }
3843
3844 case "$arch" in
3845     aarch64|alpha|ia64)
3846         spic=$shared
3847     ;;
3848     mips)
3849         check_64bit mips mips64 '_MIPS_SIM > 1'
3850         spic=$shared
3851     ;;
3852     parisc)
3853         check_64bit parisc parisc64 'sizeof(void *) > 4'
3854         spic=$shared
3855     ;;
3856     ppc)
3857         check_64bit ppc ppc64 'sizeof(void *) > 4'
3858         spic=$shared
3859     ;;
3860     s390)
3861         check_64bit s390 s390x 'sizeof(void *) > 4'
3862         spic=$shared
3863     ;;
3864     sparc)
3865         check_64bit sparc sparc64 'sizeof(void *) > 4'
3866         spic=$shared
3867     ;;
3868     x86)
3869         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3870         if test "$subarch" = "x86_64"; then
3871             spic=$shared
3872         fi
3873     ;;
3874 esac
3875
3876 enable $subarch
3877 enabled spic && enable_weak pic
3878
3879 enabled x86_64 && objformat=elf64 || objformat="elf32"
3880
3881 # OS specific
3882 case $target_os in
3883     aix)
3884         SHFLAGS=-shared
3885         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3886         enabled shared && add_ldflags -Wl,-brtl
3887         ;;
3888     android)
3889         disable symver
3890         enable section_data_rel_ro
3891         SLIB_INSTALL_NAME='$(SLIBNAME)'
3892         SLIB_INSTALL_LINKS=
3893         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3894         ;;
3895     haiku)
3896         prefix_default="/boot/common"
3897         network_extralibs="-lnetwork"
3898         host_extralibs=
3899         ;;
3900     sunos)
3901         SHFLAGS='-shared -Wl,-h,$$(@F)'
3902         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3903         network_extralibs="-lsocket -lnsl"
3904         # When using suncc to build, the Solaris linker will mark
3905         # an executable with each instruction set encountered by
3906         # the Solaris assembler.  As our libraries contain their own
3907         # guards for processor-specific code, instead suppress
3908         # generation of the HWCAPS ELF section on Solaris x86 only.
3909         enabled_all suncc x86 &&
3910             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3911             add_ldflags -Wl,-M,mapfile
3912         nm_default='nm -P -g'
3913         version_script='-M'
3914         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3915         ;;
3916     netbsd)
3917         disable symver
3918         oss_indev_extralibs="-lossaudio"
3919         ;;
3920     openbsd|bitrig)
3921         disable symver
3922         SHFLAGS='-shared'
3923         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3924         SLIB_INSTALL_LINKS=
3925         oss_indev_extralibs="-lossaudio"
3926         ;;
3927     dragonfly)
3928         disable symver
3929         ;;
3930     freebsd)
3931         ;;
3932     bsd/os)
3933         add_extralibs -lpoll -lgnugetopt
3934         ;;
3935     darwin)
3936         enabled ppc && add_asflags -force_cpusubtype_ALL
3937         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3938         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3939         add_ldflags -Wl,-dynamic,-search_paths_first
3940         check_cflags -Werror=partial-availability
3941         SLIBSUF=".dylib"
3942         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3943         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3944         enabled x86_64 && objformat="macho64" || objformat="macho32"
3945         enabled_any pic shared ||
3946             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3947         check_header dispatch/dispatch.h &&
3948             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3949         if test -n "$sysroot"; then
3950             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3951             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3952         fi
3953         ;;
3954     msys*)
3955         die "Native MSYS builds are discouraged, please use the MINGW environment."
3956         ;;
3957     mingw32*|mingw64*)
3958         target_os=mingw32
3959         LIBTARGET=i386
3960         if enabled x86_64; then
3961             LIBTARGET="i386:x86-64"
3962         fi
3963         if enabled shared; then
3964             # Cannot build both shared and static libs when using dllexport.
3965             disable static
3966         fi
3967         check_ldflags -Wl,--nxcompat
3968         check_ldflags -Wl,--dynamicbase
3969         shlibdir_default="$bindir_default"
3970         SLIBPREF=""
3971         SLIBSUF=".dll"
3972         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3973         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3974         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3975         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3976         SLIB_INSTALL_LINKS=
3977         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3978         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3979         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3980         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3981         enabled x86_64 && objformat="win64" || objformat="win32"
3982         dlltool="${cross_prefix}dlltool"
3983         ranlib=:
3984         enable dos_paths
3985         ;;
3986     win32|win64)
3987         disable symver
3988         if enabled shared; then
3989             # Link to the import library instead of the normal static library
3990             # for shared libs.
3991             LD_LIB='%.lib'
3992             # Cannot build both shared and static libs with MSVC or icl.
3993             disable static
3994         fi
3995         shlibdir_default="$bindir_default"
3996         SLIBPREF=""
3997         SLIBSUF=".dll"
3998         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3999         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4000         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4001         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4002         SLIB_INSTALL_LINKS=
4003         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4004         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4005         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4006         enabled x86_64 && objformat="win64" || objformat="win32"
4007         ranlib=:
4008         enable dos_paths
4009         ;;
4010     cygwin*)
4011         target_os=cygwin
4012         shlibdir_default="$bindir_default"
4013         SLIBPREF="cyg"
4014         SLIBSUF=".dll"
4015         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4016         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4017         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4018         SLIB_INSTALL_LINKS=
4019         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4020         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4021         enabled x86_64 && objformat="win64" || objformat="win32"
4022         enable dos_paths
4023         ;;
4024     *-dos|freedos|opendos)
4025         network_extralibs="-lsocket"
4026         objformat="coff"
4027         enable dos_paths
4028         add_cppflags -U__STRICT_ANSI__
4029         ;;
4030     linux)
4031         enable section_data_rel_ro
4032         ;;
4033     irix*)
4034         target_os=irix
4035         ranlib="echo ignoring ranlib"
4036         ;;
4037     os/2*)
4038         ln_s="cp -f"
4039         objformat="aout"
4040         add_cppflags -D_GNU_SOURCE
4041         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4042         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4043         LIBSUF="_s.a"
4044         SLIBPREF=""
4045         SLIBSUF=".dll"
4046         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4047         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4048         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4049             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4050             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4051             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4052             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4053         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4054             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4055         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4056         enable dos_paths
4057         ;;
4058     gnu/kfreebsd)
4059         add_cppflags -D_BSD_SOURCE
4060         ;;
4061     gnu)
4062         ;;
4063     qnx)
4064         add_cppflags -D_QNX_SOURCE
4065         network_extralibs="-lsocket"
4066         ;;
4067     symbian)
4068         SLIBSUF=".dll"
4069         enable dos_paths
4070         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4071         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4072         add_ldflags -Wl,--target1-abs,--no-undefined \
4073                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4074                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4075         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4076                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4077                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4078         ;;
4079     minix)
4080         ;;
4081     none)
4082         ;;
4083     *)
4084         die "Unknown OS '$target_os'."
4085         ;;
4086 esac
4087
4088 # determine libc flavour
4089
4090 probe_libc(){
4091     pfx=$1
4092     pfx_no_=${pfx%_}
4093     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4094     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4095         eval ${pfx}libc_type=uclibc
4096         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4097     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4098         eval ${pfx}libc_type=glibc
4099         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4100     # MinGW headers can be installed on Cygwin, so check for newlib first.
4101     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4102         eval ${pfx}libc_type=newlib
4103         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4104     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4105     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4106         eval ${pfx}libc_type=mingw64
4107         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4108         eval test \$${pfx_no_}cc_type = "gcc" &&
4109             add_${pfx}cppflags -D__printf__=__gnu_printf__
4110     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4111          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4112         eval ${pfx}libc_type=mingw32
4113         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4114             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4115             die "ERROR: MinGW32 runtime version must be >= 3.15."
4116         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4117         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4118             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4119         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4120             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4121         eval test \$${pfx_no_}cc_type = "gcc" &&
4122             add_${pfx}cppflags -D__printf__=__gnu_printf__
4123     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4124         eval ${pfx}libc_type=msvcrt
4125         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4126             if [ "$pfx" = host_ ]; then
4127                 add_host_cppflags -Dsnprintf=_snprintf
4128             else
4129                 add_compat strtod.o strtod=avpriv_strtod
4130                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4131                                              _snprintf=avpriv_snprintf  \
4132                                              vsnprintf=avpriv_vsnprintf
4133             fi
4134         fi
4135         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4136         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4137         # 0x601 by default unless something else is set by the user.
4138         # This can easily lead to us detecting functions only present
4139         # in such new versions and producing binaries requiring windows 7.0.
4140         # Therefore explicitly set the default to XP unless the user has
4141         # set something else on the command line.
4142         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4143         # family. For these cases, configure is free to use any functions
4144         # found in the SDK headers by default. (Alternatively, we could force
4145         # _WIN32_WINNT to 0x0602 in that case.)
4146         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4147             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4148 #ifdef WINAPI_FAMILY
4149 #include <winapifamily.h>
4150 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4151 #error not desktop
4152 #endif
4153 #endif
4154 EOF
4155         if [ "$pfx" = "" ]; then
4156             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4157         fi
4158     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4159         eval ${pfx}libc_type=klibc
4160     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4161         eval ${pfx}libc_type=bionic
4162     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4163         eval ${pfx}libc_type=solaris
4164         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4165     else
4166         eval ${pfx}libc_type=default
4167         add_${pfx}cppflags -D_DEFAULT_SOURCE
4168     fi
4169     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
4170 }
4171
4172 probe_libc
4173 probe_libc host_
4174
4175 # hacks for compiler/libc/os combinations
4176
4177 case $libc_type in
4178     bionic)
4179         add_compat strtod.o strtod=avpriv_strtod
4180         ;;
4181     glibc)
4182         if enabled tms470; then
4183             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4184             add_cppflags -D__USER_LABEL_PREFIX__=
4185             add_cppflags -D__builtin_memset=memset
4186             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4187             add_cflags   -pds=48    # incompatible redefinition of macro
4188         fi
4189         ;;
4190 esac
4191
4192 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4193     add_cppflags '-I\$(SRC_PATH)/compat/float'
4194
4195 esc(){
4196     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4197 }
4198
4199 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4200
4201 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4202
4203 set_default $PATHS_LIST
4204 set_default nm
4205
4206 disabled optimizations || check_cflags -fomit-frame-pointer
4207
4208 enable_weak_pic() {
4209     disabled pic && return
4210     enable pic
4211     add_cppflags -DPIC
4212     case "$target_os" in
4213     mingw*|cygwin*|win*)
4214         ;;
4215     *)
4216         add_cflags -fPIC
4217         add_asflags -fPIC
4218         ;;
4219     esac
4220 }
4221
4222 enabled pic && enable_weak_pic
4223
4224 check_cc <<EOF || die "Symbol mangling check failed."
4225 int ff_extern;
4226 EOF
4227 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4228 extern_prefix=${sym%%ff_extern*}
4229
4230 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4231
4232 _restrict=
4233 for restrict_keyword in restrict __restrict__ __restrict; do
4234     check_cc <<EOF && _restrict=$restrict_keyword && break
4235 void foo(char * $restrict_keyword p);
4236 EOF
4237 done
4238
4239 check_cc <<EOF && enable pragma_deprecated
4240 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4241 EOF
4242
4243 check_cc <<EOF || die "endian test failed"
4244 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4245 EOF
4246 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4247
4248 check_gas() {
4249     log "check_gas using '$as' as AS"
4250     # :vararg is used on aarch64, arm and ppc altivec
4251     check_as <<EOF || return 1
4252 .macro m n, y:vararg=0
4253 \n: .int \y
4254 .endm
4255 m x
4256 EOF
4257     # .altmacro is only used in arm asm
4258     ! enabled arm || check_as <<EOF || return 1
4259 .altmacro
4260 EOF
4261     enable gnu_as
4262     return 0
4263 }
4264
4265 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4266     nogas=:
4267     enabled_any arm aarch64 && nogas=die
4268     enabled_all ppc altivec && nogas=warn
4269     as_noop=-v
4270
4271     case $as_type in
4272         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4273         gcc)  gaspp_as_type=gas ;;
4274         *)    gaspp_as_type=$as_type ;;
4275     esac
4276
4277     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4278
4279     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4280         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4281
4282     if ! check_gas ; then
4283         as=${gas:=$as}
4284         check_gas || \
4285             $nogas "GNU assembler not found, install/update gas-preprocessor"
4286     fi
4287
4288     check_as <<EOF && enable as_func
4289 .func test
4290 .endfunc
4291 EOF
4292 fi
4293
4294 check_inline_asm inline_asm_labels '"1:\n"'
4295
4296 if enabled aarch64; then
4297     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4298     # internal assembler in clang 3.3 does not support this instruction
4299     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4300     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4301
4302     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4303
4304 elif enabled alpha; then
4305
4306     check_cflags -mieee
4307
4308 elif enabled arm; then
4309
4310     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4311     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4312     enabled thumb && check_cflags -mthumb || check_cflags -marm
4313
4314     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4315         enable vfp_args
4316     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4317         enable vfp_args
4318     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4319         case "${cross_prefix:-$cc}" in
4320             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4321             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4322 __asm__ (".eabi_attribute 28, 1");
4323 int main(void) { return 0; }
4324 EOF
4325         esac
4326         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4327     fi
4328
4329     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4330     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4331     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4332     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4333     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4334     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4335
4336     [ $target_os = linux ] || [ $target_os = android ] ||
4337         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4338             $ARCH_EXT_LIST_ARM
4339
4340     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4341
4342     check_as <<EOF && enable as_arch_directive
4343 .arch armv7-a
4344 EOF
4345     check_as <<EOF && enable as_fpu_directive
4346 .fpu neon
4347 EOF
4348
4349     # llvm's integrated assembler supports .object_arch from llvm 3.5
4350     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4351         check_as <<EOF && enable as_object_arch
4352 .object_arch armv4
4353 EOF
4354
4355     # MS armasm fails to assemble our PIC constructs
4356     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4357
4358 elif enabled mips; then
4359
4360     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4361
4362     # make sure that only an instruction set is enabled
4363     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4364
4365     if enabled mips64; then
4366         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4367             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4368                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4369     else
4370         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4371             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4372                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4373     fi
4374
4375 elif enabled parisc; then
4376
4377     if enabled gcc; then
4378         case $($cc -dumpversion) in
4379             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4380         esac
4381     fi
4382
4383 elif enabled ppc; then
4384
4385     enable local_aligned_8 local_aligned_16 local_aligned_32
4386
4387     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4388     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4389     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4390     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4391
4392     if enabled altivec; then
4393         check_cflags -maltivec -mabi=altivec
4394
4395         # check if our compiler supports Motorola AltiVec C API
4396         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4397                                  vector signed int v2 = (vector signed int) { 1 };
4398                                  v1 = vec_add(v1, v2);" ||
4399             disable altivec
4400
4401         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4402     fi
4403
4404     if enabled vsx; then
4405         check_cflags -mvsx &&
4406         check_code cc altivec.h "int v[4] = { 0 };
4407                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4408             disable vsx
4409     fi
4410
4411     if enabled power8; then
4412         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4413     fi
4414
4415 elif enabled x86; then
4416
4417     check_builtin rdtsc    intrin.h   "__rdtsc()"
4418     check_builtin mm_empty mmintrin.h "_mm_empty()"
4419
4420     enable local_aligned_8 local_aligned_16 local_aligned_32
4421
4422     # check whether EBP is available on x86
4423     # As 'i' is stored on the stack, this program will crash
4424     # if the base pointer is used to access it because the
4425     # base pointer is cleared in the inline assembly code.
4426     check_exec_crash <<EOF && enable ebp_available
4427 volatile int i=0;
4428 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4429 return i;
4430 EOF
4431
4432     # check whether EBX is available on x86
4433     check_inline_asm ebx_available '""::"b"(0)' &&
4434         check_inline_asm ebx_available '"":::"%ebx"'
4435
4436     # check whether xmm clobbers are supported
4437     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4438
4439     # check whether binutils is new enough to compile SSSE3/MMXEXT
4440     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4441     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4442
4443     probe_x86asm(){
4444         x86asmexe_probe=$1
4445         if check_cmd $x86asmexe_probe -v; then
4446             x86asmexe=$x86asmexe_probe
4447             x86asm_type=nasm
4448             x86asm_debug="-g -F dwarf"
4449             X86ASMDEP=
4450             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4451         elif check_cmd $x86asmexe_probe --version; then
4452             x86asmexe=$x86asmexe_probe
4453             x86asm_type=yasm
4454             x86asm_debug="-g dwarf2"
4455             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4456             X86ASM_DEPFLAGS=
4457         fi
4458         check_x86asm "movbe ecx, [5]" && enable x86asm
4459     }
4460
4461     if ! disabled_any asm mmx x86asm; then
4462         disable x86asm
4463         for program in $x86asmexe nasm yasm; do
4464             probe_x86asm $program && break
4465         done
4466         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4467         X86ASMFLAGS="-f $objformat"
4468         enabled pic               && append X86ASMFLAGS "-DPIC"
4469         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4470         case "$objformat" in
4471             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4472         esac
4473
4474         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4475         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4476         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4477         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4478         check_x86asm "CPU amdnop"                      || disable cpunop
4479     fi
4480
4481     case "$cpu" in
4482         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4483             disable fast_clz
4484         ;;
4485     esac
4486
4487 fi
4488
4489 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4490
4491 check_ldflags -Wl,--as-needed
4492
4493 if ! disabled network; then
4494     check_func getaddrinfo $network_extralibs
4495     check_func inet_aton $network_extralibs
4496
4497     check_type netdb.h "struct addrinfo"
4498     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4499     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4500     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4501     check_type poll.h "struct pollfd"
4502     check_type netinet/sctp.h "struct sctp_event_subscribe"
4503     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4504     check_type netinet/in.h "struct sockaddr_in6"
4505     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4506     check_type "sys/types.h sys/socket.h" socklen_t
4507
4508     # Prefer arpa/inet.h over winsock2
4509     if check_header arpa/inet.h ; then
4510         check_func closesocket
4511     elif check_header winsock2.h ; then
4512         check_func_headers winsock2.h closesocket -lws2 &&
4513             network_extralibs="-lws2" ||
4514         { check_func_headers winsock2.h closesocket -lws2_32 &&
4515             network_extralibs="-lws2_32"; } || disable winsock2_h network
4516         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4517
4518         check_type ws2tcpip.h socklen_t
4519         check_type ws2tcpip.h "struct addrinfo"
4520         check_type ws2tcpip.h "struct group_source_req"
4521         check_type ws2tcpip.h "struct ip_mreq_source"
4522         check_type ws2tcpip.h "struct ipv6_mreq"
4523         check_type winsock2.h "struct pollfd"
4524         check_struct winsock2.h "struct sockaddr" sa_len
4525         check_type ws2tcpip.h "struct sockaddr_in6"
4526         check_type ws2tcpip.h "struct sockaddr_storage"
4527     else
4528         disable network
4529     fi
4530 fi
4531
4532 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4533 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4534 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4535 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4536
4537 case "$custom_allocator" in
4538     jemalloc)
4539         # jemalloc by default does not use a prefix
4540         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4541     ;;
4542     tcmalloc)
4543         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4544         malloc_prefix=tc_
4545     ;;
4546 esac
4547
4548 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4549 check_func  ${malloc_prefix}memalign            && enable memalign
4550 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4551
4552 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4553     { check_lib clock_gettime time.h clock_gettime ||
4554       check_lib clock_gettime time.h clock_gettime -lrt; }
4555
4556 check_func  fcntl
4557 check_func  gethrtime
4558 check_func  getopt
4559 check_func  getrusage
4560 check_func  gettimeofday
4561 check_func  gmtime_r
4562 check_func  isatty
4563 check_func  localtime_r
4564 check_func  mkstemp
4565 check_func  mmap
4566 check_func  mprotect
4567 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4568 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4569 check_func  sched_getaffinity
4570 check_func  setrlimit
4571 check_func  strerror_r
4572 check_func  sysconf
4573 check_func  sysctl
4574 check_func  usleep
4575
4576 check_func_headers io.h setmode
4577 check_func_headers mach/mach_time.h mach_absolute_time
4578 check_func_headers stdlib.h getenv
4579
4580 check_func_headers windows.h GetProcessAffinityMask
4581 check_func_headers windows.h GetProcessTimes
4582 check_func_headers windows.h GetSystemTimeAsFileTime
4583 check_func_headers windows.h LoadLibrary
4584 check_func_headers windows.h MapViewOfFile
4585 check_func_headers windows.h SetConsoleTextAttribute
4586 check_func_headers windows.h Sleep
4587 check_func_headers windows.h VirtualAlloc
4588 check_struct windows.h "CONDITION_VARIABLE" Ptr
4589
4590 check_header direct.h
4591 check_header dxgidebug.h
4592 check_header dxva.h
4593 check_header dxva2api.h
4594 check_header io.h
4595 check_header malloc.h
4596 check_header poll.h
4597 check_header sys/param.h
4598 check_header sys/resource.h
4599 check_header sys/select.h
4600 check_header sys/time.h
4601 check_header sys/un.h
4602 check_header unistd.h
4603 check_header valgrind/valgrind.h
4604 check_header VideoDecodeAcceleration/VDADecoder.h
4605 check_header windows.h
4606
4607 # it seems there are versions of clang in some distros that try to use the
4608 # gcc headers, which explodes for stdatomic
4609 # so we also check that atomics actually work here
4610 check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4611
4612 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4613 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4614 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4615 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4616
4617 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4618
4619 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4620 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4621 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4622
4623 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4624 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4625 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4626
4627 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4628 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4629 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4630 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4631 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4632 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4633 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4634 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4635 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4636
4637 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4638
4639 if ! disabled w32threads && ! enabled pthreads; then
4640     check_lib w32threads "windows.h process.h" _beginthreadex
4641 fi
4642
4643 # check for some common methods of building with pthread support
4644 # do this before the optional library checks as some of them require pthreads
4645 if ! disabled pthreads && ! enabled w32threads; then
4646     if check_lib pthreads pthread.h pthread_join -pthread; then
4647         add_cflags -pthread
4648     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4649         add_cflags -pthreads
4650     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4651         :
4652     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4653         :
4654     elif check_func pthread_join; then
4655         enable pthreads
4656     fi
4657 fi
4658
4659 enabled pthreads &&
4660     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4661
4662 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4663 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4664
4665 # On some systems dynamic loading requires no extra linker flags
4666 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4667
4668 check_lib libm math.h sin -lm
4669
4670 atan2f_args=2
4671 ldexpf_args=2
4672 powf_args=2
4673
4674 for func in $MATH_FUNCS; do
4675     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4676 done
4677
4678 # these are off by default, so fail if requested and not available
4679 enabled avisynth          && require_header avisynth/avisynth_c.h
4680 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4681 enabled cuda              && require cuda cuda.h cuInit -lcuda
4682 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4683 enabled frei0r            && require_header frei0r.h
4684 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4685                              check_lib gmp gmp.h mpz_export -lgmp
4686 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4687 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4688 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4689 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4690 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4691 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4692 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4693 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4694 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4695 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4696 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4697 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4698 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4699 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4700 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4701 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4702 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4703 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4704 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4705                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4706 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4707 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4708 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4709 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4710 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4711 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4712 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4713 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4714 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4715 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4716 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4717 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4718                              { enabled libvpx_vp8_decoder &&
4719                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4720                                enabled libvpx_vp8_encoder &&
4721                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4722                                enabled libvpx_vp9_decoder &&
4723                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4724                                enabled libvpx_vp9_encoder &&
4725                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4726                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4727                                    die "libvpx enabled but no supported decoders/encoders found"
4728                              }
4729 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4730 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4731 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4732                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4733                              { check_cpp_condition x264.h "X264_MPEG2" &&
4734                                enable libx262; }
4735 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4736                              require_cpp_condition x265.h "X265_BUILD >= 57"
4737 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4738 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4739 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4740                                { ! enabled cross_compile &&
4741                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4742                                  add_ldflags -L/opt/vc/lib/ &&
4743                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4744                                die "ERROR: mmal not found" &&
4745                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4746 enabled nvenc             && require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4747 enabled omx               && require_header OMX_Core.h
4748 enabled omx_rpi           && { check_header OMX_Core.h ||
4749                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4750                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4751 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4752                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4753                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4754                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4755                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4756                                die "ERROR: openssl not found"; }
4757
4758 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4759 enabled avplay &&
4760     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4761
4762 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4763 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4764
4765 check_header linux/fb.h
4766 check_header linux/videodev2.h
4767 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4768
4769 check_header AVFoundation/AVFoundation.h
4770
4771 check_header sys/videoio.h
4772
4773 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4774 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4775 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4776 # w32api 3.12 had it defined wrong
4777 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4778
4779 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4780 check_header "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4781     check_header "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4782     check_header "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4783     check_header "dev/ic/bt8xx.h"
4784
4785 check_header sys/soundcard.h
4786
4787 enabled alsa_indev &&
4788     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4789
4790 enabled libjack &&
4791     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4792
4793 enabled sndio_indev && check_lib sndio sndio.h sio_open -lsndio
4794
4795 if enabled libcdio; then
4796     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4797     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4798     die "ERROR: No usable libcdio/cdparanoia found"
4799 fi
4800
4801 if enabled libxcb; then
4802     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4803     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4804     disabled libxcb_shm ||
4805         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4806     disabled libxcb_xfixes ||
4807         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4808 fi
4809
4810 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4811 # the desktop api partition
4812 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4813 #ifdef WINAPI_FAMILY
4814 #include <winapifamily.h>
4815 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4816 #error desktop, not uwp
4817 #else
4818 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4819 #endif
4820 #else
4821 #error no family set
4822 #endif
4823 EOF
4824
4825 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4826
4827 enabled vaapi &&
4828     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4829     disable vaapi
4830
4831 enabled vaapi &&
4832     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4833
4834 enabled vaapi &&
4835     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4836
4837 enabled vdpau &&
4838     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4839     disable vdpau
4840
4841 enabled vdpau &&
4842     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4843
4844 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"