build: Add missing hevc_ps dependency for QSV HEVC encoder
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
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-yasm           disable use of nasm/yasm 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   --enable-random          randomly enable/disable components
341   --disable-random
342   --enable-random=LIST     randomly enable/disable specific components or
343   --disable-random=LIST    component groups. LIST is a comma-separated list
344                            of NAME[:PROB] entries where NAME is a component
345                            (group) and PROB the probability associated with
346                            NAME (default 0.5).
347   --random-seed=VALUE      seed value for --enable/disable-random
348   --disable-valgrind-backtrace do not print a backtrace under Valgrind
349                            (only applies to --disable-optimizations builds)
350
351 NOTE: Object files are built at the place where configure is launched.
352 EOF
353   exit 0
354 }
355
356 quotes='""'
357
358 log(){
359     echo "$@" >> $logfile
360 }
361
362 log_file(){
363     log BEGIN $1
364     i=1
365     while read line; do
366         printf '%5s   %s\n' "${i}" "${line}"
367         i=$(($i+1))
368     done < $1 >> $logfile
369     log END $1
370 }
371
372 echolog(){
373     log "$@"
374     echo "$@"
375 }
376
377 warn(){
378     log "WARNING: $*"
379     WARNINGS="${WARNINGS}WARNING: $*\n"
380 }
381
382 die(){
383     echolog "$@"
384     cat <<EOF
385
386 If you think configure made a mistake, make sure you are using the latest
387 version from Git.  If the latest version fails, report the problem to the
388 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
389 EOF
390     if disabled logging; then
391         cat <<EOF
392 Rerun configure with logging enabled (do not use --disable-logging), and
393 include the log this produces with your report.
394 EOF
395     else
396         cat <<EOF
397 Include the log file "$logfile" produced by configure as this will help
398 solving the problem.
399 EOF
400     fi
401     exit 1
402 }
403
404 # Avoid locale weirdness, besides we really just want to translate ASCII.
405 toupper(){
406     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
407 }
408
409 tolower(){
410     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
411 }
412
413 c_escape(){
414     echo "$*" | sed 's/["\\]/\\\0/g'
415 }
416
417 sh_quote(){
418     v=$(echo "$1" | sed "s/'/'\\\\''/g")
419     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
420     echo "$v"
421 }
422
423 cleanws(){
424     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
425 }
426
427 filter(){
428     pat=$1
429     shift
430     for v; do
431         eval "case $v in $pat) printf '%s ' $v ;; esac"
432     done
433 }
434
435 filter_out(){
436     pat=$1
437     shift
438     for v; do
439         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
440     done
441 }
442
443 map(){
444     m=$1
445     shift
446     for v; do eval $m; done
447 }
448
449 add_suffix(){
450     suffix=$1
451     shift
452     for v; do echo ${v}${suffix}; done
453 }
454
455 set_all(){
456     value=$1
457     shift
458     for var in $*; do
459         eval $var=$value
460     done
461 }
462
463 set_weak(){
464     value=$1
465     shift
466     for var; do
467         eval : \${$var:=$value}
468     done
469 }
470
471 sanitize_var_name(){
472     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
473 }
474
475 set_safe(){
476     var=$1
477     shift
478     eval $(sanitize_var_name "$var")='$*'
479 }
480
481 get_safe(){
482     eval echo \$$(sanitize_var_name "$1")
483 }
484
485 pushvar(){
486     for pvar in $*; do
487         eval level=\${${pvar}_level:=0}
488         eval ${pvar}_${level}="\$$pvar"
489         eval ${pvar}_level=$(($level+1))
490     done
491 }
492
493 popvar(){
494     for pvar in $*; do
495         eval level=\${${pvar}_level:-0}
496         test $level = 0 && continue
497         eval level=$(($level-1))
498         eval $pvar="\${${pvar}_${level}}"
499         eval ${pvar}_level=$level
500         eval unset ${pvar}_${level}
501     done
502 }
503
504 enable(){
505     set_all yes $*
506 }
507
508 disable(){
509     set_all no $*
510 }
511
512 enable_weak(){
513     set_weak yes $*
514 }
515
516 disable_weak(){
517     set_weak no $*
518 }
519
520 enable_safe(){
521     for var; do
522         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
523     done
524 }
525
526 disable_safe(){
527     for var; do
528         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
529     done
530 }
531
532 do_enable_deep(){
533     for var; do
534         enabled $var && continue
535         eval sel="\$${var}_select"
536         eval sgs="\$${var}_suggest"
537         pushvar var sgs
538         enable_deep $sel
539         popvar sgs
540         enable_deep_weak $sgs
541         popvar var
542     done
543 }
544
545 enable_deep(){
546     do_enable_deep $*
547     enable $*
548 }
549
550 enable_deep_weak(){
551     for var; do
552         disabled $var && continue
553         pushvar var
554         do_enable_deep $var
555         popvar var
556         enable_weak $var
557     done
558 }
559
560 enabled(){
561     test "${1#!}" = "$1" && op== || op=!=
562     eval test "x\$${1#!}" $op "xyes"
563 }
564
565 disabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xno"
568 }
569
570 enabled_all(){
571     for opt; do
572         enabled $opt || return 1
573     done
574 }
575
576 disabled_all(){
577     for opt; do
578         disabled $opt || return 1
579     done
580 }
581
582 enabled_any(){
583     for opt; do
584         enabled $opt && return 0
585     done
586 }
587
588 disabled_any(){
589     for opt; do
590         disabled $opt && return 0
591     done
592     return 1
593 }
594
595 set_default(){
596     for opt; do
597         eval : \${$opt:=\$${opt}_default}
598     done
599 }
600
601 is_in(){
602     value=$1
603     shift
604     for var in $*; do
605         [ $var = $value ] && return 0
606     done
607     return 1
608 }
609
610 do_check_deps(){
611     for cfg; do
612         cfg="${cfg#!}"
613         enabled ${cfg}_checking && die "Circular dependency for $cfg."
614         disabled ${cfg}_checking && continue
615         enable ${cfg}_checking
616         append allopts $cfg
617
618         eval dep_all="\$${cfg}_deps"
619         eval dep_any="\$${cfg}_deps_any"
620         eval dep_sel="\$${cfg}_select"
621         eval dep_sgs="\$${cfg}_suggest"
622         eval dep_ifa="\$${cfg}_if"
623         eval dep_ifn="\$${cfg}_if_any"
624
625         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
627         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
628
629         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
630         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
631         enabled_all  $dep_all || disable $cfg
632         enabled_any  $dep_any || disable $cfg
633         disabled_any $dep_sel && disable $cfg
634
635         if enabled $cfg; then
636             enable_deep $dep_sel
637             enable_deep_weak $dep_sgs
638         fi
639
640         disable ${cfg}_checking
641     done
642 }
643
644 check_deps(){
645     unset allopts
646
647     do_check_deps "$@"
648
649     for cfg in $allopts; do
650         enabled $cfg || continue
651         eval dep_extralibs="\$${cfg}_extralibs"
652         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
653     done
654 }
655
656 print_config(){
657     pfx=$1
658     files=$2
659     shift 2
660     map 'eval echo "$v \${$v:-no}"' "$@" |
661     awk "BEGIN { split(\"$files\", files) }
662         {
663             c = \"$pfx\" toupper(\$1);
664             v = \$2;
665             sub(/yes/, 1, v);
666             sub(/no/,  0, v);
667             for (f in files) {
668                 file = files[f];
669                 if (file ~ /\\.h\$/) {
670                     printf(\"#define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.asm\$/) {
672                     printf(\"%%define %s %d\\n\", c, v) >>file;
673                 } else if (file ~ /\\.mak\$/) {
674                     n = -v ? \"\" : \"!\";
675                     printf(\"%s%s=yes\\n\", n, c) >>file;
676                 }
677             }
678         }"
679 }
680
681 print_enabled(){
682     suf=$1
683     shift
684     for v; do
685         enabled $v && printf "%s\n" ${v%$suf}
686     done
687 }
688
689 append(){
690     var=$1
691     shift
692     eval "$var=\"\$$var $*\""
693 }
694
695 prepend(){
696     var=$1
697     shift
698     eval "$var=\"$* \$$var\""
699 }
700
701 unique(){
702     var=$1
703     uniq_list=""
704     for tok in $(eval echo \$$var); do
705         uniq_list="$(filter_out $tok $uniq_list) $tok"
706     done
707     eval "$var=\"${uniq_list}\""
708 }
709
710 add_cppflags(){
711     append CPPFLAGS "$@"
712 }
713
714 add_cflags(){
715     append CFLAGS $($cflags_filter "$@")
716 }
717
718 add_asflags(){
719     append ASFLAGS $($asflags_filter "$@")
720 }
721
722 add_objcflags(){
723     append OBJCFLAGS $($objcflags_filter "$@")
724 }
725
726 add_ldflags(){
727     append LDFLAGS $($ldflags_filter "$@")
728 }
729
730 add_ldexeflags(){
731     append LDEXEFLAGS $($ldflags_filter "$@")
732 }
733
734 add_stripflags(){
735     append STRIPFLAGS "$@"
736 }
737
738 add_extralibs(){
739     prepend extralibs $($ldflags_filter "$@")
740 }
741
742 add_host_cppflags(){
743     append host_cppflags "$@"
744 }
745
746 add_host_cflags(){
747     append host_cflags $($host_cflags_filter "$@")
748 }
749
750 add_host_ldflags(){
751     append host_ldflags $($host_ldflags_filter "$@")
752 }
753
754 add_compat(){
755     append compat_objs $1
756     shift
757     map 'add_cppflags -D$v' "$@"
758 }
759
760 check_cmd(){
761     log "$@"
762     "$@" >> $logfile 2>&1
763 }
764
765 cc_o(){
766     eval printf '%s\\n' $CC_O
767 }
768
769 cc_e(){
770     eval printf '%s\\n' $CC_E
771 }
772
773 check_cc(){
774     log check_cc "$@"
775     cat > $TMPC
776     log_file $TMPC
777     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
778 }
779
780 check_objcc(){
781     log check_objcc "$@"
782     cat > $TMPC
783     log_file $TMPC
784     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
785 }
786
787 check_cpp(){
788     log check_cpp "$@"
789     cat > $TMPC
790     log_file $TMPC
791     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
792 }
793
794 as_o(){
795     eval printf '%s\\n' $AS_O
796 }
797
798 check_as(){
799     log check_as "$@"
800     cat > $TMPS
801     log_file $TMPS
802     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
803 }
804
805 check_inline_asm(){
806     log check_inline_asm "$@"
807     name="$1"
808     code="$2"
809     shift 2
810     disable $name
811     check_cc "$@" <<EOF && enable $name
812 void foo(void){ __asm__ volatile($code); }
813 EOF
814 }
815
816 check_insn(){
817     log check_insn "$@"
818     check_inline_asm ${1}_inline "\"$2\""
819     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
820 }
821
822 check_yasm(){
823     log check_yasm "$@"
824     echo "$1" > $TMPS
825     log_file $TMPS
826     shift 1
827     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
828 }
829
830 ld_o(){
831     eval printf '%s\\n' $LD_O
832 }
833
834 check_ld(){
835     log check_ld "$@"
836     flags=$(filter_out '-l*' "$@")
837     libs=$(filter '-l*' "$@")
838     check_cc $($cflags_filter $flags) || return
839     flags=$($ldflags_filter $flags)
840     libs=$($ldflags_filter $libs)
841     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
842 }
843
844 print_include(){
845     hdr=$1
846     test "${hdr%.h}" = "${hdr}" &&
847         echo "#include $hdr"    ||
848         echo "#include <$hdr>"
849 }
850
851 check_code(){
852     log check_code "$@"
853     check=$1
854     headers=$2
855     code=$3
856     shift 3
857     {
858         for hdr in $headers; do
859             print_include $hdr
860         done
861         echo "int main(void) { $code; return 0; }"
862     } | check_$check "$@"
863 }
864
865 check_cppflags(){
866     log check_cppflags "$@"
867     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
868 int x;
869 EOF
870 }
871
872 test_cflags(){
873     log test_cflags "$@"
874     set -- $($cflags_filter "$@")
875     check_cc "$@" <<EOF
876 int x;
877 EOF
878 }
879
880 check_cflags(){
881     log check_cflags "$@"
882     test_cflags "$@" && add_cflags "$@"
883 }
884
885 test_objcflags(){
886     log test_objcflags "$@"
887     set -- $($objcflags_filter "$@")
888     check_objcc "$@" <<EOF
889 int x;
890 EOF
891 }
892
893 check_objcflags(){
894     log check_objcflags "$@"
895     test_objcflags "$@" && add_objcflags "$@"
896 }
897
898 test_ldflags(){
899     log test_ldflags "$@"
900     check_ld "$@" <<EOF
901 int main(void){ return 0; }
902 EOF
903 }
904
905 check_ldflags(){
906     log check_ldflags "$@"
907     test_ldflags "$@" && add_ldflags "$@"
908 }
909
910 test_stripflags(){
911     log test_stripflags "$@"
912     # call check_cc to get a fresh TMPO
913     check_cc <<EOF
914 int main(void) { return 0; }
915 EOF
916     check_cmd $strip $STRIPFLAGS "$@" $TMPO
917 }
918
919 check_stripflags(){
920     log check_stripflags "$@"
921     test_stripflags "$@" && add_stripflags "$@"
922 }
923
924 check_header(){
925     log check_header "$@"
926     header=$1
927     shift
928     disable_safe $header
929     check_cpp "$@" <<EOF && enable_safe $header
930 #include <$header>
931 int x;
932 EOF
933 }
934
935 check_func(){
936     log check_func "$@"
937     func=$1
938     shift
939     disable $func
940     check_ld "$@" <<EOF && enable $func
941 extern int $func();
942 int main(void){ $func(); }
943 EOF
944 }
945
946 check_mathfunc(){
947     log check_mathfunc "$@"
948     func=$1
949     narg=$2
950     shift 2
951     test $narg = 2 && args="f, g" || args="f"
952     disable $func
953     check_ld "$@" <<EOF && enable $func
954 #include <math.h>
955 float foo(float f, float g) { return $func($args); }
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_func_headers(){
961     log check_func_headers "$@"
962     headers=$1
963     funcs=$2
964     shift 2
965     {
966         for hdr in $headers; do
967             print_include $hdr
968         done
969         for func in $funcs; do
970             echo "long check_$func(void) { return (long) $func; }"
971         done
972         echo "int main(void) { return 0; }"
973     } | check_ld "$@" && enable $funcs && enable_safe $headers
974 }
975
976 check_cpp_condition(){
977     log check_cpp_condition "$@"
978     header=$1
979     condition=$2
980     shift 2
981     check_cpp "$@" <<EOF
982 #include <$header>
983 #if !($condition)
984 #error "unsatisfied condition: $condition"
985 #endif
986 EOF
987 }
988
989 test_cflags_cpp(){
990     log test_cflags_cpp "$@"
991     flags=$1
992     condition=$2
993     shift 2
994     set -- $($cflags_filter "$flags")
995     check_cpp "$@" <<EOF
996 #if !($condition)
997 #error "unsatisfied condition: $condition"
998 #endif
999 EOF
1000 }
1001
1002 check_lib(){
1003     log check_lib "$@"
1004     headers="$1"
1005     funcs="$2"
1006     shift 2
1007     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1008 }
1009
1010 check_pkg_config(){
1011     log check_pkg_config "$@"
1012     pkg="$1"
1013     headers="$2"
1014     funcs="$3"
1015     shift 3
1016     check_cmd $pkg_config --exists --print-errors $pkg || return
1017     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1018     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1019     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1020         set_safe "${pkg}_cflags" $pkg_cflags   &&
1021         set_safe "${pkg}_libs"   $pkg_libs
1022 }
1023
1024 check_exec(){
1025     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1026 }
1027
1028 check_exec_crash(){
1029     log check_exec_crash "$@"
1030     code=$(cat)
1031
1032     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1033     # are safe but may not be available everywhere.  Thus we use
1034     # raise(SIGTERM) instead.  The check is run in a subshell so we
1035     # can redirect the "Terminated" message from the shell.  SIGBUS
1036     # is not defined by standard C so it is used conditionally.
1037
1038     (check_exec "$@") >> $logfile 2>&1 <<EOF
1039 #include <signal.h>
1040 static void sighandler(int sig){
1041     raise(SIGTERM);
1042 }
1043 int foo(void){
1044     $code
1045 }
1046 int (*func_ptr)(void) = foo;
1047 int main(void){
1048     signal(SIGILL, sighandler);
1049     signal(SIGFPE, sighandler);
1050     signal(SIGSEGV, sighandler);
1051 #ifdef SIGBUS
1052     signal(SIGBUS, sighandler);
1053 #endif
1054     return func_ptr();
1055 }
1056 EOF
1057 }
1058
1059 check_type(){
1060     log check_type "$@"
1061     headers=$1
1062     type=$2
1063     shift 2
1064     disable_safe "$type"
1065     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1066 }
1067
1068 check_struct(){
1069     log check_struct "$@"
1070     headers=$1
1071     struct=$2
1072     member=$3
1073     shift 3
1074     disable_safe "${struct}_${member}"
1075     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1076         enable_safe "${struct}_${member}"
1077 }
1078
1079 check_builtin(){
1080     log check_builtin "$@"
1081     name=$1
1082     headers=$2
1083     builtin=$3
1084     shift 3
1085     disable "$name"
1086     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1087 }
1088
1089 check_compile_assert(){
1090     log check_compile_assert "$@"
1091     name=$1
1092     headers=$2
1093     condition=$3
1094     shift 3
1095     disable "$name"
1096     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1097 }
1098
1099 require(){
1100     log require "$@"
1101     name="$1"
1102     headers="$2"
1103     func="$3"
1104     shift 3
1105     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1106 }
1107
1108 require_pkg_config(){
1109     log require_pkg_config "$@"
1110     pkg="$1"
1111     check_pkg_config "$@" || die "ERROR: $pkg not found"
1112     add_cflags    $(get_safe "${pkg}_cflags")
1113     add_extralibs $(get_safe "${pkg}_libs")
1114 }
1115
1116 hostcc_e(){
1117     eval printf '%s\\n' $HOSTCC_E
1118 }
1119
1120 hostcc_o(){
1121     eval printf '%s\\n' $HOSTCC_O
1122 }
1123
1124 check_host_cc(){
1125     log check_host_cc "$@"
1126     cat > $TMPC
1127     log_file $TMPC
1128     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1129 }
1130
1131 check_host_cpp(){
1132     log check_host_cpp "$@"
1133     cat > $TMPC
1134     log_file $TMPC
1135     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1136 }
1137
1138 check_host_cppflags(){
1139     log check_host_cppflags "$@"
1140     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1141 int x;
1142 EOF
1143 }
1144
1145 check_host_cflags(){
1146     log check_host_cflags "$@"
1147     set -- $($host_cflags_filter "$@")
1148     check_host_cc "$@" <<EOF && append host_cflags "$@"
1149 int x;
1150 EOF
1151 }
1152
1153 check_host_cpp_condition(){
1154     log check_host_cpp_condition "$@"
1155     header=$1
1156     condition=$2
1157     shift 2
1158     check_host_cpp "$@" <<EOF
1159 #include <$header>
1160 #if !($condition)
1161 #error "unsatisfied condition: $condition"
1162 #endif
1163 EOF
1164 }
1165
1166 apply(){
1167     file=$1
1168     shift
1169     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1170 }
1171
1172 cp_if_changed(){
1173     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1174     mkdir -p "$(dirname $2)"
1175     cp -f "$1" "$2"
1176 }
1177
1178 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1179 # system-dependent things.
1180
1181 AVCODEC_COMPONENTS="
1182     bsfs
1183     decoders
1184     encoders
1185     hwaccels
1186     parsers
1187 "
1188
1189 AVDEVICE_COMPONENTS="
1190     indevs
1191     outdevs
1192 "
1193 AVFILTER_COMPONENTS="
1194     filters
1195 "
1196 AVFORMAT_COMPONENTS="
1197     demuxers
1198     muxers
1199     protocols
1200 "
1201
1202 AVRESAMPLE_COMPONENTS=""
1203 AVUTIL_COMPONENTS=""
1204
1205 COMPONENT_LIST="
1206     $AVCODEC_COMPONENTS
1207     $AVDEVICE_COMPONENTS
1208     $AVFILTER_COMPONENTS
1209     $AVFORMAT_COMPONENTS
1210     $AVRESAMPLE_COMPONENTS
1211     $AVUTIL_COMPONENTS
1212 "
1213
1214 EXAMPLE_LIST="
1215     decode_audio_example
1216     decode_video_example
1217     encode_audio_example
1218     encode_video_example
1219     filter_audio_example
1220     metadata_example
1221     output_example
1222     qsvdec_example
1223     transcode_aac_example
1224 "
1225
1226 HWACCEL_LIBRARY_NONFREE_LIST="
1227     cuda
1228     libnpp
1229 "
1230 HWACCEL_LIBRARY_LIST="
1231     $HWACCEL_LIBRARY_NONFREE_LIST
1232     d3d11va
1233     dxva2
1234     libmfx
1235     mmal
1236     nvenc
1237     omx
1238     vaapi
1239     vda
1240     vdpau
1241 "
1242
1243 EXTERNAL_LIBRARY_GPL_LIST="
1244     libcdio
1245     libx264
1246     libx265
1247     libxavs
1248     libxvid
1249 "
1250
1251 EXTERNAL_LIBRARY_NONFREE_LIST="
1252     libfaac
1253     libfdk_aac
1254     openssl
1255 "
1256
1257 EXTERNAL_LIBRARY_VERSION3_LIST="
1258     libopencore_amrnb
1259     libopencore_amrwb
1260     libvo_aacenc
1261     libvo_amrwbenc
1262 "
1263
1264 EXTERNAL_LIBRARY_LIST="
1265     $EXTERNAL_LIBRARY_GPL_LIST
1266     $EXTERNAL_LIBRARY_NONFREE_LIST
1267     $EXTERNAL_LIBRARY_VERSION3_LIST
1268     avisynth
1269     bzlib
1270     frei0r
1271     gnutls
1272     libbs2b
1273     libdc1394
1274     libdcadec
1275     libfontconfig
1276     libfreetype
1277     libgsm
1278     libhdcd
1279     libilbc
1280     libkvazaar
1281     libmp3lame
1282     libopencv
1283     libopenh264
1284     libopenjpeg
1285     libopus
1286     libpulse
1287     librtmp
1288     libschroedinger
1289     libsnappy
1290     libspeex
1291     libtheora
1292     libtwolame
1293     libvorbis
1294     libvpx
1295     libwavpack
1296     libwebp
1297     libxcb
1298     libxcb_shm
1299     libxcb_xfixes
1300     zlib
1301 "
1302
1303 FEATURE_LIST="
1304     gray
1305     hardcoded_tables
1306     omx_rpi
1307     runtime_cpudetect
1308     safe_bitstream_reader
1309     shared
1310     small
1311     sram
1312     static
1313     swscale_alpha
1314 "
1315
1316 LIBRARY_LIST="
1317     avcodec
1318     avdevice
1319     avfilter
1320     avformat
1321     avresample
1322     avutil
1323     swscale
1324 "
1325
1326 LICENSE_LIST="
1327     gpl
1328     nonfree
1329     version3
1330 "
1331
1332 PROGRAM_LIST="
1333     avconv
1334     avplay
1335     avprobe
1336 "
1337
1338 SUBSYSTEM_LIST="
1339     dct
1340     doc
1341     error_resilience
1342     faan
1343     fft
1344     lsp
1345     lzo
1346     mdct
1347     network
1348     rdft
1349 "
1350
1351 CONFIG_LIST="
1352     $COMPONENT_LIST
1353     $EXAMPLE_LIST
1354     $EXTERNAL_LIBRARY_LIST
1355     $HWACCEL_LIBRARY_LIST
1356     $FEATURE_LIST
1357     $LICENSE_LIST
1358     $LIBRARY_LIST
1359     $PROGRAM_LIST
1360     $SUBSYSTEM_LIST
1361     neon_clobber_test
1362     pic
1363     pod2man
1364     texi2html
1365     thumb
1366     valgrind_backtrace
1367     xmm_clobber_test
1368 "
1369
1370 THREADS_LIST="
1371     pthreads
1372     w32threads
1373 "
1374
1375 ATOMICS_LIST="
1376     atomics_gcc
1377     atomics_suncc
1378     atomics_win32
1379 "
1380
1381 ARCH_LIST="
1382     aarch64
1383     alpha
1384     arm
1385     avr32
1386     avr32_ap
1387     avr32_uc
1388     bfin
1389     ia64
1390     m68k
1391     mips
1392     mips64
1393     parisc
1394     ppc
1395     ppc64
1396     s390
1397     sh4
1398     sparc
1399     sparc64
1400     tilegx
1401     tilepro
1402     tomi
1403     x86
1404     x86_32
1405     x86_64
1406 "
1407
1408 ARCH_EXT_LIST_ARM="
1409     armv5te
1410     armv6
1411     armv6t2
1412     armv8
1413     neon
1414     vfp
1415     vfpv3
1416 "
1417
1418 ARCH_EXT_LIST_X86_SIMD="
1419     amd3dnow
1420     amd3dnowext
1421     avx
1422     avx2
1423     fma3
1424     fma4
1425     mmx
1426     mmxext
1427     sse
1428     sse2
1429     sse3
1430     sse4
1431     sse42
1432     ssse3
1433     xop
1434 "
1435
1436 ARCH_EXT_LIST_PPC="
1437     altivec
1438     dcbzl
1439     ldbrx
1440     power8
1441     ppc4xx
1442     vsx
1443 "
1444
1445 ARCH_EXT_LIST_X86="
1446     $ARCH_EXT_LIST_X86_SIMD
1447     cpunop
1448     i686
1449 "
1450
1451 ARCH_EXT_LIST_MIPS="
1452     loongson
1453     mips32r1
1454     mips64r1
1455     mips32r2
1456     mips64r2
1457     mips32r6
1458     mips64r6
1459 "
1460
1461 ARCH_EXT_LIST="
1462     $ARCH_EXT_LIST_ARM
1463     $ARCH_EXT_LIST_MIPS
1464     $ARCH_EXT_LIST_PPC
1465     $ARCH_EXT_LIST_X86
1466     vis
1467 "
1468
1469 ARCH_FEATURES="
1470     aligned_stack
1471     fast_64bit
1472     fast_clz
1473     fast_cmov
1474     local_aligned_8
1475     local_aligned_16
1476     local_aligned_32
1477     simd_align_16
1478     simd_align_32
1479 "
1480
1481 BUILTIN_LIST="
1482     atomic_cas_ptr
1483     machine_rw_barrier
1484     MemoryBarrier
1485     mm_empty
1486     rdtsc
1487     sem_timedwait
1488     sync_val_compare_and_swap
1489 "
1490 HAVE_LIST_CMDLINE="
1491     inline_asm
1492     symver
1493     yasm
1494 "
1495
1496 HAVE_LIST_PUB="
1497     bigendian
1498     fast_unaligned
1499 "
1500
1501 HEADERS_LIST="
1502     AVFoundation_AVFoundation_h
1503     alsa_asoundlib_h
1504     altivec_h
1505     arpa_inet_h
1506     cdio_paranoia_h
1507     cdio_paranoia_paranoia_h
1508     dispatch_dispatch_h
1509     dev_bktr_ioctl_bt848_h
1510     dev_bktr_ioctl_meteor_h
1511     dev_ic_bt8xx_h
1512     dev_video_bktr_ioctl_bt848_h
1513     dev_video_meteor_ioctl_meteor_h
1514     direct_h
1515     dlfcn_h
1516     d3d11_h
1517     dxva_h
1518     gsm_h
1519     io_h
1520     mach_mach_time_h
1521     machine_ioctl_bt848_h
1522     machine_ioctl_meteor_h
1523     malloc_h
1524     poll_h
1525     sndio_h
1526     soundcard_h
1527     stdatomic_h
1528     sys_mman_h
1529     sys_param_h
1530     sys_resource_h
1531     sys_select_h
1532     sys_soundcard_h
1533     sys_time_h
1534     sys_un_h
1535     sys_videoio_h
1536     unistd_h
1537     valgrind_valgrind_h
1538     windows_h
1539     winsock2_h
1540 "
1541
1542 INTRINSICS_LIST="
1543     intrinsics_neon
1544 "
1545
1546 MATH_FUNCS="
1547     atanf
1548     atan2f
1549     cbrtf
1550     cosf
1551     exp2
1552     exp2f
1553     expf
1554     isinf
1555     isnan
1556     ldexpf
1557     llrint
1558     llrintf
1559     log2
1560     log2f
1561     log10f
1562     lrint
1563     lrintf
1564     powf
1565     rint
1566     round
1567     roundf
1568     sinf
1569     trunc
1570     truncf
1571 "
1572
1573 SYSTEM_FUNCS="
1574     aligned_malloc
1575     clock_gettime
1576     closesocket
1577     CommandLineToArgvW
1578     CoTaskMemFree
1579     CryptGenRandom
1580     dlopen
1581     fcntl
1582     flt_lim
1583     fork
1584     getaddrinfo
1585     gethrtime
1586     getopt
1587     GetProcessAffinityMask
1588     GetProcessMemoryInfo
1589     GetProcessTimes
1590     getrusage
1591     GetSystemTimeAsFileTime
1592     gettimeofday
1593     gmtime_r
1594     inet_aton
1595     isatty
1596     jack_port_get_latency_range
1597     LoadLibrary
1598     localtime_r
1599     mach_absolute_time
1600     MapViewOfFile
1601     memalign
1602     mkstemp
1603     mmap
1604     mprotect
1605     nanosleep
1606     posix_memalign
1607     sched_getaffinity
1608     SetConsoleTextAttribute
1609     setmode
1610     setrlimit
1611     Sleep
1612     strerror_r
1613     sysconf
1614     sysctl
1615     usleep
1616     VirtualAlloc
1617 "
1618
1619 TOOLCHAIN_FEATURES="
1620     as_dn_directive
1621     as_fpu_directive
1622     as_func
1623     as_object_arch
1624     asm_mod_q
1625     attribute_may_alias
1626     attribute_packed
1627     ebp_available
1628     ebx_available
1629     gnu_as
1630     ibm_asm
1631     inline_asm_labels
1632     pragma_deprecated
1633     symver_asm_label
1634     symver_gnu_asm
1635     vfp_args
1636     xform_asm
1637     xmm_clobbers
1638 "
1639
1640 TYPES_LIST="
1641     CONDITION_VARIABLE_Ptr
1642     socklen_t
1643     struct_addrinfo
1644     struct_group_source_req
1645     struct_ip_mreq_source
1646     struct_ipv6_mreq
1647     struct_pollfd
1648     struct_rusage_ru_maxrss
1649     struct_sockaddr_in6
1650     struct_sockaddr_sa_len
1651     struct_sockaddr_storage
1652     struct_v4l2_frmivalenum_discrete
1653 "
1654
1655 HAVE_LIST="
1656     $ARCH_EXT_LIST
1657     $(add_suffix _external $ARCH_EXT_LIST)
1658     $(add_suffix _inline   $ARCH_EXT_LIST)
1659     $ARCH_FEATURES
1660     $BUILTIN_LIST
1661     $HAVE_LIST_CMDLINE
1662     $HAVE_LIST_PUB
1663     $HEADERS_LIST
1664     $INTRINSICS_LIST
1665     $MATH_FUNCS
1666     $SYSTEM_FUNCS
1667     $THREADS_LIST
1668     $TOOLCHAIN_FEATURES
1669     $TYPES_LIST
1670     dos_paths
1671     dxva2_lib
1672     libc_msvcrt
1673     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1674     sdl
1675     section_data_rel_ro
1676     threads
1677     vaapi_drm
1678     vaapi_x11
1679     vdpau_x11
1680 "
1681
1682 # options emitted with CONFIG_ prefix but not available on the command line
1683 CONFIG_EXTRA="
1684     aandcttables
1685     ac3dsp
1686     audio_frame_queue
1687     audiodsp
1688     blockdsp
1689     bswapdsp
1690     cabac
1691     dirac_parse
1692     dvprofile
1693     faandct
1694     faanidct
1695     fdctdsp
1696     flacdsp
1697     fmtconvert
1698     g722dsp
1699     gmp
1700     golomb
1701     gplv3
1702     h263dsp
1703     h264chroma
1704     h264dsp
1705     h264parse
1706     h264pred
1707     h264qpel
1708     hpeldsp
1709     huffman
1710     huffyuvdsp
1711     huffyuvencdsp
1712     idctdsp
1713     iirfilter
1714     imdct15
1715     intrax8
1716     iso_media
1717     ividsp
1718     jpegtables
1719     libx262
1720     lgplv3
1721     lpc
1722     lzf
1723     me_cmp
1724     mpeg_er
1725     mpegaudio
1726     mpegaudiodsp
1727     mpegvideo
1728     mpegvideoenc
1729     mss34dsp
1730     pixblockdsp
1731     qpeldsp
1732     qsv
1733     qsvdec
1734     qsvenc
1735     rangecoder
1736     riffdec
1737     riffenc
1738     rtpdec
1739     rtpenc_chain
1740     rv34dsp
1741     sinewin
1742     snappy
1743     srtp
1744     startcode
1745     texturedsp
1746     texturedspenc
1747     tpeldsp
1748     vaapi_encode
1749     vc1dsp
1750     videodsp
1751     vp3dsp
1752     vp56dsp
1753     vp8dsp
1754     wma_freqs
1755     wmv2dsp
1756 "
1757
1758 CMDLINE_SELECT="
1759     $ARCH_EXT_LIST
1760     $CONFIG_LIST
1761     $HAVE_LIST_CMDLINE
1762     $THREADS_LIST
1763     asm
1764     cross_compile
1765     debug
1766     extra_warnings
1767     logging
1768     lto
1769     optimizations
1770     rpath
1771 "
1772
1773 PATHS_LIST="
1774     bindir
1775     datadir
1776     docdir
1777     incdir
1778     libdir
1779     mandir
1780     prefix
1781     shlibdir
1782 "
1783
1784 CMDLINE_SET="
1785     $PATHS_LIST
1786     ar
1787     arch
1788     as
1789     cc
1790     objcc
1791     cpu
1792     cross_prefix
1793     custom_allocator
1794     dep_cc
1795     env
1796     extra_version
1797     host_cc
1798     host_cflags
1799     host_ld
1800     host_ldflags
1801     host_libs
1802     host_os
1803     ld
1804     logfile
1805     malloc_prefix
1806     nm
1807     optflags
1808     pkg_config
1809     pkg_config_flags
1810     random_seed
1811     samples
1812     sysinclude
1813     sysroot
1814     target_exec
1815     target_os
1816     target_path
1817     target_samples
1818     toolchain
1819 "
1820
1821 CMDLINE_APPEND="
1822     extra_cflags
1823     extra_objcflags
1824     host_cppflags
1825 "
1826
1827 # code dependency declarations
1828
1829 # architecture extensions
1830
1831 armv5te_deps="arm"
1832 armv6_deps="arm"
1833 armv6t2_deps="arm"
1834 armv8_deps="aarch64"
1835 neon_deps_any="aarch64 arm"
1836 intrinsics_neon_deps="neon"
1837 vfp_deps_any="aarch64 arm"
1838 vfpv3_deps="vfp"
1839
1840 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1841
1842 altivec_deps="ppc"
1843 ppc4xx_deps="ppc"
1844 vsx_deps="altivec"
1845 power8_deps="vsx"
1846
1847 cpunop_deps="i686"
1848 x86_64_select="i686"
1849 x86_64_suggest="fast_cmov"
1850
1851 amd3dnow_deps="mmx"
1852 amd3dnowext_deps="amd3dnow"
1853 i686_deps="x86"
1854 mmx_deps="x86"
1855 mmxext_deps="mmx"
1856 sse_deps="mmxext"
1857 sse2_deps="sse"
1858 sse3_deps="sse2"
1859 ssse3_deps="sse3"
1860 sse4_deps="ssse3"
1861 sse42_deps="sse4"
1862 avx_deps="sse42"
1863 xop_deps="avx"
1864 fma3_deps="avx"
1865 fma4_deps="avx"
1866 avx2_deps="avx"
1867
1868 mmx_external_deps="yasm"
1869 mmx_inline_deps="inline_asm"
1870 mmx_suggest="mmx_external mmx_inline"
1871
1872 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1873     eval dep=\$${ext}_deps
1874     eval ${ext}_external_deps='"${dep}_external"'
1875     eval ${ext}_inline_deps='"${dep}_inline"'
1876     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1877 done
1878
1879 aligned_stack_if_any="aarch64 ppc x86"
1880 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1881 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1882 fast_unaligned_if_any="aarch64 ppc x86"
1883 simd_align_16_if_any="altivec neon sse"
1884 simd_align_32_if_any="avx"
1885
1886 # system capabilities
1887 symver_if_any="symver_asm_label symver_gnu_asm"
1888 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1889
1890 # threading support
1891 atomics_gcc_if="sync_val_compare_and_swap"
1892 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1893 atomics_win32_if="MemoryBarrier"
1894 atomics_native_if_any="$ATOMICS_LIST"
1895 w32threads_deps="atomics_native"
1896 threads_if_any="$THREADS_LIST"
1897
1898 # subsystems
1899 dct_select="rdft"
1900 dirac_parse_select="golomb"
1901 error_resilience_select="me_cmp"
1902 faandct_deps="faan fdctdsp"
1903 faanidct_deps="faan idctdsp"
1904 h264dsp_select="startcode"
1905 intrax8_select="blockdsp idctdsp"
1906 mdct_select="fft"
1907 rdft_select="fft"
1908 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1909 mpeg_er_select="error_resilience"
1910 mpegaudio_select="mpegaudiodsp"
1911 mpegaudiodsp_select="dct"
1912 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1913 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1914 vc1dsp_select="h264chroma qpeldsp startcode"
1915
1916 # decoders / encoders
1917 aac_decoder_select="imdct15 mdct sinewin"
1918 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1919 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1920 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1921 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1922 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1923 adpcm_g722_decoder_select="g722dsp"
1924 adpcm_g722_encoder_select="g722dsp"
1925 aic_decoder_select="golomb idctdsp"
1926 alac_encoder_select="lpc"
1927 als_decoder_select="bswapdsp"
1928 amrnb_decoder_select="lsp"
1929 amrwb_decoder_select="lsp"
1930 amv_decoder_select="sp5x_decoder"
1931 ape_decoder_select="bswapdsp"
1932 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1933 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1934 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1935 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1936 atrac1_decoder_select="mdct sinewin"
1937 atrac3_decoder_select="mdct"
1938 atrac3p_decoder_select="mdct sinewin"
1939 bink_decoder_select="blockdsp hpeldsp"
1940 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1941 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1942 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1943 cllc_decoder_select="bswapdsp"
1944 comfortnoise_encoder_select="lpc"
1945 cook_decoder_select="audiodsp mdct sinewin"
1946 cscd_decoder_select="lzo"
1947 cscd_decoder_suggest="zlib"
1948 dca_decoder_select="fmtconvert mdct"
1949 dds_decoder_select="texturedsp"
1950 dnxhd_decoder_select="blockdsp idctdsp"
1951 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1952 dvvideo_decoder_select="dvprofile idctdsp"
1953 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1954 dxa_decoder_deps="zlib"
1955 dxv_decoder_select="lzf texturedsp"
1956 eac3_decoder_select="ac3_decoder"
1957 eac3_encoder_select="ac3_encoder"
1958 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1959 eatgq_decoder_select="aandcttables idctdsp"
1960 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1961 exr_decoder_deps="zlib"
1962 ffv1_decoder_select="golomb rangecoder"
1963 ffv1_encoder_select="rangecoder"
1964 ffvhuff_decoder_select="huffyuv_decoder"
1965 ffvhuff_encoder_select="huffyuv_encoder"
1966 fic_decoder_select="golomb"
1967 flac_decoder_select="flacdsp golomb"
1968 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1969 flashsv_decoder_deps="zlib"
1970 flashsv_encoder_deps="zlib"
1971 flashsv2_decoder_deps="zlib"
1972 flv_decoder_select="h263_decoder"
1973 flv_encoder_select="h263_encoder"
1974 fourxm_decoder_select="blockdsp bswapdsp"
1975 fraps_decoder_select="bswapdsp huffman"
1976 g2m_decoder_deps="zlib"
1977 g2m_decoder_select="blockdsp idctdsp jpegtables"
1978 h261_decoder_select="mpeg_er mpegvideo"
1979 h261_encoder_select="aandcttables mpegvideoenc"
1980 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1981 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1982 h263i_decoder_select="h263_decoder"
1983 h263p_encoder_select="h263_encoder"
1984 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1985 h264_decoder_suggest="error_resilience"
1986 hap_decoder_select="snappy texturedsp"
1987 hap_encoder_deps="libsnappy"
1988 hap_encoder_select="texturedspenc"
1989 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1990 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1991 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1992 iac_decoder_select="imc_decoder"
1993 imc_decoder_select="bswapdsp fft mdct sinewin"
1994 indeo3_decoder_select="hpeldsp"
1995 indeo4_decoder_select="ividsp"
1996 indeo5_decoder_select="ividsp"
1997 interplay_video_decoder_select="hpeldsp"
1998 jpegls_decoder_select="golomb mjpeg_decoder"
1999 jpegls_encoder_select="golomb"
2000 jv_decoder_select="blockdsp"
2001 lagarith_decoder_select="huffyuvdsp"
2002 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2003 loco_decoder_select="golomb"
2004 magicyuv_decoder_select="huffyuvdsp"
2005 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2006 metasound_decoder_select="lsp mdct sinewin"
2007 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2008 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2009 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2010 mjpegb_decoder_select="mjpeg_decoder"
2011 mlp_decoder_select="mlp_parser"
2012 motionpixels_decoder_select="bswapdsp"
2013 mp1_decoder_select="mpegaudio"
2014 mp1float_decoder_select="mpegaudio"
2015 mp2_decoder_select="mpegaudio"
2016 mp2float_decoder_select="mpegaudio"
2017 mp3_decoder_select="mpegaudio"
2018 mp3adu_decoder_select="mpegaudio"
2019 mp3adufloat_decoder_select="mpegaudio"
2020 mp3float_decoder_select="mpegaudio"
2021 mp3on4_decoder_select="mpegaudio"
2022 mp3on4float_decoder_select="mpegaudio"
2023 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2024 mpc8_decoder_select="mpegaudiodsp"
2025 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2026 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2027 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2028 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2029 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2030 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2031 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2032 mpeg4_encoder_select="h263_encoder"
2033 msa1_decoder_select="mss34dsp"
2034 msmpeg4v1_decoder_select="h263_decoder"
2035 msmpeg4v2_decoder_select="h263_decoder"
2036 msmpeg4v2_encoder_select="h263_encoder"
2037 msmpeg4v3_decoder_select="h263_decoder"
2038 msmpeg4v3_encoder_select="h263_encoder"
2039 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2040 mts2_decoder_select="mss34dsp"
2041 mxpeg_decoder_select="mjpeg_decoder"
2042 nellymoser_decoder_select="mdct sinewin"
2043 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2044 nuv_decoder_select="idctdsp lzo"
2045 on2avc_decoder_select="mdct"
2046 opus_decoder_deps="avresample"
2047 opus_decoder_select="imdct15"
2048 png_decoder_deps="zlib"
2049 png_encoder_deps="zlib"
2050 png_encoder_select="huffyuvencdsp"
2051 prores_decoder_select="idctdsp"
2052 prores_encoder_select="fdctdsp"
2053 qcelp_decoder_select="lsp"
2054 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2055 ra_144_encoder_select="audio_frame_queue lpc"
2056 ralf_decoder_select="golomb"
2057 rscc_decoder_deps="zlib"
2058 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2059 rv10_encoder_select="h263_encoder"
2060 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2061 rv20_encoder_select="h263_encoder"
2062 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2063 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2064 screenpresso_decoder_deps="zlib"
2065 shorten_decoder_select="golomb"
2066 sipr_decoder_select="lsp"
2067 sp5x_decoder_select="mjpeg_decoder"
2068 svq1_decoder_select="hpeldsp"
2069 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2070 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2071 svq3_decoder_suggest="zlib"
2072 tak_decoder_select="audiodsp"
2073 tdsc_decoder_deps="zlib"
2074 tdsc_decoder_select="mjpeg_decoder"
2075 theora_decoder_select="vp3_decoder"
2076 thp_decoder_select="mjpeg_decoder"
2077 tiff_decoder_suggest="zlib"
2078 tiff_encoder_suggest="zlib"
2079 truehd_decoder_select="mlp_decoder"
2080 truemotion2_decoder_select="bswapdsp"
2081 truespeech_decoder_select="bswapdsp"
2082 tscc_decoder_deps="zlib"
2083 txd_decoder_select="texturedsp"
2084 twinvq_decoder_select="mdct lsp sinewin"
2085 utvideo_decoder_select="bswapdsp"
2086 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2087 vble_decoder_select="huffyuvdsp"
2088 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2089 vc1image_decoder_select="vc1_decoder"
2090 vorbis_decoder_select="mdct"
2091 vorbis_encoder_select="mdct"
2092 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2093 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2094 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2095 vp6a_decoder_select="vp6_decoder"
2096 vp6f_decoder_select="vp6_decoder"
2097 vp7_decoder_select="h264pred videodsp vp8dsp"
2098 vp8_decoder_select="h264pred videodsp vp8dsp"
2099 vp9_decoder_select="videodsp"
2100 webp_decoder_select="vp8_decoder"
2101 wmapro_decoder_select="mdct sinewin wma_freqs"
2102 wmav1_decoder_select="mdct sinewin wma_freqs"
2103 wmav1_encoder_select="mdct sinewin wma_freqs"
2104 wmav2_decoder_select="mdct sinewin wma_freqs"
2105 wmav2_encoder_select="mdct sinewin wma_freqs"
2106 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2107 wmv1_decoder_select="h263_decoder"
2108 wmv1_encoder_select="h263_encoder"
2109 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2110 wmv2_encoder_select="h263_encoder wmv2dsp"
2111 wmv3_decoder_select="vc1_decoder"
2112 wmv3image_decoder_select="wmv3_decoder"
2113 zerocodec_decoder_deps="zlib"
2114 zlib_decoder_deps="zlib"
2115 zlib_encoder_deps="zlib"
2116 zmbv_decoder_deps="zlib"
2117 zmbv_encoder_deps="zlib"
2118
2119 # hardware accelerators
2120 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2121 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2122 vaapi_deps="va_va_h"
2123 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2124 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2125 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2126
2127 h263_vaapi_hwaccel_deps="vaapi"
2128 h263_vaapi_hwaccel_select="h263_decoder"
2129 h264_d3d11va_hwaccel_deps="d3d11va"
2130 h264_d3d11va_hwaccel_select="h264_decoder"
2131 h264_dxva2_hwaccel_deps="dxva2"
2132 h264_dxva2_hwaccel_select="h264_decoder"
2133 h264_mmal_hwaccel_deps="mmal"
2134 h264_qsv_hwaccel_deps="libmfx"
2135 h264_vaapi_hwaccel_deps="vaapi"
2136 h264_vaapi_hwaccel_select="h264_decoder"
2137 h264_vda_hwaccel_deps="vda"
2138 h264_vda_hwaccel_select="h264_decoder"
2139 h264_vda_old_hwaccel_deps="vda"
2140 h264_vda_old_hwaccel_select="h264_decoder"
2141 h264_vdpau_hwaccel_deps="vdpau"
2142 h264_vdpau_hwaccel_select="h264_decoder"
2143 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2144 hevc_d3d11va_hwaccel_select="hevc_decoder"
2145 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2146 hevc_dxva2_hwaccel_select="hevc_decoder"
2147 hevc_qsv_hwaccel_deps="libmfx"
2148 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2149 hevc_vdpau_hwaccel_select="hevc_decoder"
2150 mpeg1_vdpau_hwaccel_deps="vdpau"
2151 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2152 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2153 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2154 mpeg2_dxva2_hwaccel_deps="dxva2"
2155 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2156 mpeg2_mmal_hwaccel_deps="mmal"
2157 mpeg2_qsv_hwaccel_deps="libmfx"
2158 mpeg2_vaapi_hwaccel_deps="vaapi"
2159 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2160 mpeg2_vdpau_hwaccel_deps="vdpau"
2161 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2162 mpeg4_vaapi_hwaccel_deps="vaapi"
2163 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2164 mpeg4_vdpau_hwaccel_deps="vdpau"
2165 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2166 vc1_d3d11va_hwaccel_deps="d3d11va"
2167 vc1_d3d11va_hwaccel_select="vc1_decoder"
2168 vc1_dxva2_hwaccel_deps="dxva2"
2169 vc1_dxva2_hwaccel_select="vc1_decoder"
2170 vc1_mmal_hwaccel_deps="mmal"
2171 vc1_qsv_hwaccel_deps="libmfx"
2172 vc1_vaapi_hwaccel_deps="vaapi"
2173 vc1_vaapi_hwaccel_select="vc1_decoder"
2174 vc1_vdpau_hwaccel_deps="vdpau"
2175 vc1_vdpau_hwaccel_select="vc1_decoder"
2176 vp8_qsv_hwaccel_deps="libmfx"
2177 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2178 vp8_vaapi_hwaccel_select="vp8_decoder"
2179 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2180 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2181 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2182 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2183
2184 # hardware-accelerated codecs
2185 nvenc_deps_any="dlopen LoadLibrary"
2186 nvenc_extralibs='$ldl'
2187 omx_deps="dlopen pthreads"
2188 omx_extralibs='$ldl'
2189 qsvdec_select="qsv"
2190 qsvenc_select="qsv"
2191 vaapi_encode_deps="vaapi"
2192
2193 hwupload_cuda_filter_deps="cuda"
2194 scale_npp_filter_deps="cuda libnpp"
2195
2196 h264_mmal_decoder_deps="mmal"
2197 h264_nvenc_encoder_deps="nvenc"
2198 h264_omx_encoder_deps="omx"
2199 h264_qsv_decoder_deps="libmfx"
2200 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2201 h264_qsv_encoder_deps="libmfx"
2202 h264_qsv_encoder_select="qsvenc"
2203 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2204 h264_vaapi_encoder_select="vaapi_encode golomb"
2205 hevc_nvenc_encoder_deps="nvenc"
2206 hevc_qsv_decoder_deps="libmfx"
2207 hevc_qsv_encoder_deps="libmfx"
2208 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2209 hevc_qsv_encoder_select="qsvenc"
2210 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2211 hevc_vaapi_encoder_select="vaapi_encode golomb"
2212 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2213 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2214 mpeg2_mmal_decoder_deps="mmal"
2215 mpeg2_qsv_decoder_deps="libmfx"
2216 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2217 mpeg2_qsv_encoder_deps="libmfx"
2218 mpeg2_qsv_encoder_select="qsvenc"
2219 mpeg4_omx_encoder_deps="omx"
2220 vc1_mmal_decoder_deps="mmal"
2221 vc1_qsv_decoder_deps="libmfx"
2222 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2223 vp8_qsv_decoder_deps="libmfx"
2224 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2225
2226 nvenc_h264_encoder_deps="nvenc"
2227 nvenc_hevc_encoder_deps="nvenc"
2228
2229 # parsers
2230 h264_parser_select="golomb h264dsp h264parse"
2231 hevc_parser_select="golomb"
2232 mpegvideo_parser_select="mpegvideo"
2233 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2234 vc1_parser_select="vc1dsp"
2235
2236 # bitstream_filters
2237 mjpeg2jpeg_bsf_select="jpegtables"
2238
2239 # external libraries
2240 libdcadec_decoder_deps="libdcadec"
2241 libfaac_encoder_deps="libfaac"
2242 libfaac_encoder_select="audio_frame_queue"
2243 libfdk_aac_decoder_deps="libfdk_aac"
2244 libfdk_aac_encoder_deps="libfdk_aac"
2245 libfdk_aac_encoder_select="audio_frame_queue"
2246 libgsm_decoder_deps="libgsm"
2247 libgsm_encoder_deps="libgsm"
2248 libgsm_ms_decoder_deps="libgsm"
2249 libgsm_ms_encoder_deps="libgsm"
2250 libilbc_decoder_deps="libilbc"
2251 libilbc_encoder_deps="libilbc"
2252 libkvazaar_encoder_deps="libkvazaar"
2253 libmp3lame_encoder_deps="libmp3lame"
2254 libmp3lame_encoder_select="audio_frame_queue"
2255 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2256 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2257 libopencore_amrnb_encoder_select="audio_frame_queue"
2258 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2259 libopenh264_decoder_deps="libopenh264"
2260 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2261 libopenh264_encoder_deps="libopenh264"
2262 libopenjpeg_decoder_deps="libopenjpeg"
2263 libopenjpeg_encoder_deps="libopenjpeg"
2264 libopus_decoder_deps="libopus"
2265 libopus_encoder_deps="libopus"
2266 libopus_encoder_select="audio_frame_queue"
2267 libschroedinger_decoder_deps="libschroedinger"
2268 libschroedinger_encoder_deps="libschroedinger"
2269 libspeex_decoder_deps="libspeex"
2270 libspeex_encoder_deps="libspeex"
2271 libspeex_encoder_select="audio_frame_queue"
2272 libtheora_encoder_deps="libtheora"
2273 libtwolame_encoder_deps="libtwolame"
2274 libvo_aacenc_encoder_deps="libvo_aacenc"
2275 libvo_aacenc_encoder_select="audio_frame_queue"
2276 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2277 libvorbis_encoder_deps="libvorbis"
2278 libvorbis_encoder_select="audio_frame_queue"
2279 libvpx_vp8_decoder_deps="libvpx"
2280 libvpx_vp8_encoder_deps="libvpx"
2281 libvpx_vp9_decoder_deps="libvpx"
2282 libvpx_vp9_encoder_deps="libvpx"
2283 libwavpack_encoder_deps="libwavpack"
2284 libwebp_encoder_deps="libwebp"
2285 libx262_encoder_deps="libx262"
2286 libx264_encoder_deps="libx264"
2287 libx265_encoder_deps="libx265"
2288 libxavs_encoder_deps="libxavs"
2289 libxvid_encoder_deps="libxvid mkstemp"
2290
2291 # demuxers / muxers
2292 ac3_demuxer_select="ac3_parser"
2293 asf_demuxer_select="riffdec"
2294 asf_muxer_select="riffenc"
2295 asf_stream_muxer_select="asf_muxer"
2296 avi_demuxer_select="iso_media riffdec"
2297 avi_muxer_select="riffenc"
2298 avisynth_demuxer_deps="avisynth"
2299 avisynth_demuxer_select="riffdec"
2300 caf_demuxer_select="iso_media riffdec"
2301 dash_muxer_select="mp4_muxer"
2302 dirac_demuxer_select="dirac_parser"
2303 dv_demuxer_select="dvprofile"
2304 dv_muxer_select="dvprofile"
2305 dxa_demuxer_select="riffdec"
2306 eac3_demuxer_select="ac3_parser"
2307 f4v_muxer_select="mov_muxer"
2308 flac_demuxer_select="flac_parser"
2309 hds_muxer_select="flv_muxer"
2310 hls_muxer_select="mpegts_muxer"
2311 ipod_muxer_select="mov_muxer"
2312 ismv_muxer_select="mov_muxer"
2313 matroska_audio_muxer_select="matroska_muxer"
2314 matroska_demuxer_select="iso_media riffdec"
2315 matroska_demuxer_suggest="bzlib lzo zlib"
2316 matroska_muxer_select="iso_media riffenc"
2317 mmf_muxer_select="riffenc"
2318 mov_demuxer_select="iso_media riffdec"
2319 mov_demuxer_suggest="zlib"
2320 mov_muxer_select="iso_media riffenc rtpenc_chain"
2321 mp3_demuxer_select="mpegaudio_parser"
2322 mp4_muxer_select="mov_muxer"
2323 mpegts_demuxer_select="iso_media"
2324 mpegts_muxer_select="adts_muxer latm_muxer"
2325 mpegtsraw_demuxer_select="mpegts_demuxer"
2326 mxf_d10_muxer_select="mxf_muxer"
2327 nut_muxer_select="riffenc"
2328 nuv_demuxer_select="riffdec"
2329 oga_muxer_select="ogg_muxer"
2330 ogg_demuxer_select="dirac_parse"
2331 opus_muxer_select="ogg_muxer"
2332 psp_muxer_select="mov_muxer"
2333 rtp_demuxer_select="sdp_demuxer"
2334 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2335 rtsp_demuxer_select="http_protocol rtpdec"
2336 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2337 sap_demuxer_select="sdp_demuxer"
2338 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2339 sdp_demuxer_select="rtpdec"
2340 smoothstreaming_muxer_select="ismv_muxer"
2341 spdif_muxer_select="aac_parser"
2342 spx_muxer_select="ogg_muxer"
2343 swf_demuxer_suggest="zlib"
2344 tak_demuxer_select="tak_parser"
2345 tg2_muxer_select="mov_muxer"
2346 tgp_muxer_select="mov_muxer"
2347 w64_demuxer_select="wav_demuxer"
2348 wav_demuxer_select="riffdec"
2349 wav_muxer_select="riffenc"
2350 webm_muxer_select="iso_media riffenc"
2351 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2352 wtv_demuxer_select="mpegts_demuxer riffdec"
2353 xmv_demuxer_select="riffdec"
2354 xwma_demuxer_select="riffdec"
2355
2356 # indevs / outdevs
2357 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2358 alsa_outdev_deps="alsa_asoundlib_h"
2359 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2360 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2361 dv1394_indev_deps="dv1394"
2362 dv1394_indev_select="dv_demuxer"
2363 fbdev_indev_deps="linux_fb_h"
2364 jack_indev_deps="jack_jack_h"
2365 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2366 libcdio_indev_deps="libcdio"
2367 libdc1394_indev_deps="libdc1394"
2368 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2369 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2370 pulse_indev_deps="libpulse"
2371 sndio_indev_deps="sndio_h"
2372 sndio_outdev_deps="sndio_h"
2373 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2374 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2375 vfwcap_indev_extralibs="-lavicap32"
2376 xcbgrab_indev_deps="libxcb"
2377
2378 # protocols
2379 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2380 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2381 ffrtmpcrypt_protocol_select="tcp_protocol"
2382 ffrtmphttp_protocol_deps="!librtmp_protocol"
2383 ffrtmphttp_protocol_select="http_protocol"
2384 gopher_protocol_select="network"
2385 http_protocol_select="tcp_protocol"
2386 httpproxy_protocol_select="tcp_protocol"
2387 https_protocol_select="tls_protocol"
2388 icecast_protocol_select="http_protocol"
2389 librtmp_protocol_deps="librtmp"
2390 librtmpe_protocol_deps="librtmp"
2391 librtmps_protocol_deps="librtmp"
2392 librtmpt_protocol_deps="librtmp"
2393 librtmpte_protocol_deps="librtmp"
2394 mmsh_protocol_select="http_protocol"
2395 mmst_protocol_select="network"
2396 rtmp_protocol_deps="!librtmp_protocol"
2397 rtmp_protocol_select="tcp_protocol"
2398 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2399 rtmps_protocol_deps="!librtmp_protocol"
2400 rtmps_protocol_select="tls_protocol"
2401 rtmpt_protocol_select="ffrtmphttp_protocol"
2402 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2403 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2404 rtp_protocol_select="udp_protocol"
2405 sctp_protocol_deps="struct_sctp_event_subscribe"
2406 sctp_protocol_select="network"
2407 srtp_protocol_select="rtp_protocol srtp"
2408 tcp_protocol_select="network"
2409 tls_gnutls_protocol_deps="gnutls"
2410 tls_gnutls_protocol_select="tcp_protocol"
2411 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2412 tls_openssl_protocol_select="tcp_protocol"
2413 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2414 udp_protocol_select="network"
2415 unix_protocol_deps="sys_un_h"
2416 unix_protocol_select="network"
2417
2418 # filters
2419 asyncts_filter_deps="avresample"
2420 blackframe_filter_deps="gpl"
2421 boxblur_filter_deps="gpl"
2422 bs2b_filter_deps="libbs2b"
2423 cropdetect_filter_deps="gpl"
2424 deinterlace_qsv_filter_deps="libmfx"
2425 delogo_filter_deps="gpl"
2426 drawtext_filter_deps="libfreetype"
2427 frei0r_filter_deps="frei0r dlopen"
2428 frei0r_filter_extralibs='$ldl'
2429 frei0r_src_filter_deps="frei0r dlopen"
2430 frei0r_src_filter_extralibs='$ldl'
2431 hdcd_filter_deps="libhdcd"
2432 hqdn3d_filter_deps="gpl"
2433 interlace_filter_deps="gpl"
2434 movie_filter_deps="avcodec avformat"
2435 ocv_filter_deps="libopencv"
2436 resample_filter_deps="avresample"
2437 scale_filter_deps="swscale"
2438 scale_qsv_filter_deps="libmfx"
2439 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2440
2441 # examples
2442 decode_audio_example_deps="avcodec avutil"
2443 decode_video_example_deps="avcodec avutil"
2444 encode_audio_example_deps="avcodec avutil"
2445 encode_video_example_deps="avcodec avutil"
2446 filter_audio_example_deps="avfilter avutil"
2447 metadata_example_deps="avformat avutil"
2448 output_example_deps="avcodec avformat avresample avutil swscale"
2449 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2450 transcode_aac_example_deps="avcodec avformat avresample"
2451
2452 # libraries, in linking order
2453 avcodec_deps="avutil"
2454 avdevice_deps="avformat avcodec avutil"
2455 avfilter_deps="avutil"
2456 avformat_deps="avcodec avutil"
2457 avresample_deps="avutil"
2458 swscale_deps="avutil"
2459
2460 # programs
2461 avconv_deps="avcodec avfilter avformat avresample swscale"
2462 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2463                fps_filter null_filter resample_filter scale_filter
2464                trim_filter"
2465 avplay_deps="avcodec avfilter avformat avresample sdl"
2466 avplay_libs='$sdl_libs'
2467 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2468 avprobe_deps="avcodec avformat"
2469
2470 # documentation
2471 pod2man_deps="doc"
2472 texi2html_deps="doc"
2473
2474 # default parameters
2475
2476 logfile="config.log"
2477
2478 # installation paths
2479 prefix_default="/usr/local"
2480 bindir_default='${prefix}/bin'
2481 datadir_default='${prefix}/share/avconv'
2482 docdir_default='${prefix}/share/doc/libav'
2483 incdir_default='${prefix}/include'
2484 libdir_default='${prefix}/lib'
2485 mandir_default='${prefix}/share/man'
2486 shlibdir_default="$libdir_default"
2487
2488 # toolchain
2489 ar_default="ar"
2490 cc_default="gcc"
2491 host_cc_default="gcc"
2492 ln_s="ln -s -f"
2493 nm_default="nm -g"
2494 objformat="elf"
2495 pkg_config_default=pkg-config
2496 ranlib="ranlib"
2497 strip="strip"
2498 version_script='--version-script'
2499 yasmexe="yasm"
2500
2501 # machine
2502 arch_default=$(uname -m)
2503 cpu="generic"
2504 intrinsics="none"
2505
2506 # OS
2507 target_os_default=$(tolower $(uname -s))
2508 host_os=$target_os_default
2509
2510 # configurable options
2511 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2512
2513 enable asm
2514 enable debug
2515 enable doc
2516 enable faan faandct faanidct
2517 enable optimizations
2518 enable safe_bitstream_reader
2519 enable static
2520 enable swscale_alpha
2521 enable valgrind_backtrace
2522
2523 # By default, enable only those hwaccels that have no external dependencies.
2524 enable d3d11va dxva2 vda vdpau
2525
2526 # build settings
2527 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2528 LIBPREF="lib"
2529 LIBSUF=".a"
2530 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2531 SLIBPREF="lib"
2532 SLIBSUF=".so"
2533 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2534 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2535 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2536 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2537 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2538 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2539 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2540
2541 asflags_filter=echo
2542 cflags_filter=echo
2543 ldflags_filter=echo
2544
2545 AS_C='-c'
2546 AS_O='-o $@'
2547 CC_C='-c'
2548 CC_E='-E -o $@'
2549 CC_O='-o $@'
2550 OBJCC_C='-c'
2551 OBJCC_E='-E -o $@'
2552 OBJCC_O='-o $@'
2553 LD_O='-o $@'
2554 LD_LIB='-l%'
2555 LD_PATH='-L'
2556 HOSTCC_C='-c'
2557 HOSTCC_E='-E -o $@'
2558 HOSTCC_O='-o $@'
2559 HOSTLD_O='-o $@'
2560
2561 host_libs='-lm'
2562 host_cflags_filter=echo
2563 host_ldflags_filter=echo
2564
2565 target_path='$(CURDIR)'
2566
2567 # since the object filename is not given with the -MM flag, the compiler
2568 # is only able to print the basename, and we must add the path ourselves
2569 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2570 DEPFLAGS='-MM'
2571
2572 # find source path
2573 if test -f configure; then
2574     source_path=.
2575 else
2576     source_path=$(cd $(dirname "$0"); pwd)
2577     echo "$source_path" | grep -q '[[:blank:]]' &&
2578         die "Out of tree builds are impossible with whitespace in source path."
2579     test -e "$source_path/config.h" &&
2580         die "Out of tree builds are impossible with config.h in source dir."
2581 fi
2582
2583 for v in "$@"; do
2584     r=${v#*=}
2585     l=${v%"$r"}
2586     r=$(sh_quote "$r")
2587     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2588 done
2589
2590 find_things(){
2591     thing=$1
2592     pattern=$2
2593     file=$source_path/$3
2594     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2595 }
2596
2597 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2598 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2599 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2600 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2601 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2602 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2603 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2604 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2605 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2606
2607 find_things_extern(){
2608     thing=$1
2609     pattern=$2
2610     file=$source_path/$3
2611     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2612 }
2613
2614 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2615 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2616
2617 ALL_COMPONENTS="
2618     $BSF_LIST
2619     $DECODER_LIST
2620     $DEMUXER_LIST
2621     $ENCODER_LIST
2622     $FILTER_LIST
2623     $HWACCEL_LIST
2624     $INDEV_LIST
2625     $MUXER_LIST
2626     $OUTDEV_LIST
2627     $PARSER_LIST
2628     $PROTOCOL_LIST
2629 "
2630
2631 for n in $COMPONENT_LIST; do
2632     v=$(toupper ${n%s})_LIST
2633     eval enable \$$v
2634     eval ${n}_if_any="\$$v"
2635 done
2636
2637 enable $ARCH_EXT_LIST
2638
2639 die_unknown(){
2640     echo "Unknown option \"$1\"."
2641     echo "See $0 --help for available options."
2642     exit 1
2643 }
2644
2645 print_3_columns() {
2646     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2647 }
2648
2649 show_list() {
2650     suffix=_$1
2651     shift
2652     echo $* | sed s/$suffix//g | print_3_columns
2653     exit 0
2654 }
2655
2656 rand_list(){
2657     IFS=', '
2658     set -- $*
2659     unset IFS
2660     for thing; do
2661         comp=${thing%:*}
2662         prob=${thing#$comp}
2663         prob=${prob#:}
2664         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2665         echo "prob ${prob:-0.5}"
2666         printf '%s\n' $comp
2667     done
2668 }
2669
2670 do_random(){
2671     action=$1
2672     shift
2673     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2674     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2675 }
2676
2677 for opt do
2678     optval="${opt#*=}"
2679     case "$opt" in
2680         --extra-ldflags=*)
2681             add_ldflags $optval
2682         ;;
2683         --extra-ldexeflags=*)
2684             add_ldexeflags $optval
2685         ;;
2686         --extra-libs=*)
2687             add_extralibs $optval
2688         ;;
2689         --disable-devices)
2690             disable $INDEV_LIST $OUTDEV_LIST
2691         ;;
2692         --enable-debug=*)
2693             debuglevel="$optval"
2694         ;;
2695         --disable-programs)
2696             disable $PROGRAM_LIST
2697         ;;
2698         --disable-everything)
2699             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2700         ;;
2701         --disable-all)
2702             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2703             disable $LIBRARY_LIST $PROGRAM_LIST doc
2704         ;;
2705         --enable-random|--disable-random)
2706             action=${opt%%-random}
2707             do_random ${action#--} $COMPONENT_LIST
2708         ;;
2709         --enable-random=*|--disable-random=*)
2710             action=${opt%%-random=*}
2711             do_random ${action#--} $optval
2712         ;;
2713         --enable-*=*|--disable-*=*)
2714             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2715             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2716             eval list=\$$(toupper $thing)_LIST
2717             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2718             $action $(filter "$name" $list)
2719         ;;
2720         --enable-avserver|--disable-avserver*)
2721             warn "avserver has been removed, the ${opt} option is only"\
2722                  "provided for compatibility and will be removed in the future"
2723         ;;
2724         --enable-?*|--disable-?*)
2725             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2726             if is_in $option $COMPONENT_LIST; then
2727                 test $action = disable && action=unset
2728                 eval $action \$$(toupper ${option%s})_LIST
2729             elif is_in $option $CMDLINE_SELECT; then
2730                 $action $option
2731             else
2732                 die_unknown $opt
2733             fi
2734         ;;
2735         --list-*)
2736             NAME="${opt#--list-}"
2737             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2738             NAME=${NAME%s}
2739             eval show_list $NAME \$$(toupper $NAME)_LIST
2740         ;;
2741         --help|-h) show_help
2742         ;;
2743         --quiet|-q) quiet=yes
2744         ;;
2745         *)
2746             optname="${opt%%=*}"
2747             optname="${optname#--}"
2748             optname=$(echo "$optname" | sed 's/-/_/g')
2749             if is_in $optname $CMDLINE_SET; then
2750                 eval $optname='$optval'
2751             elif is_in $optname $CMDLINE_APPEND; then
2752                 append $optname "$optval"
2753             else
2754                 die_unknown $opt
2755             fi
2756         ;;
2757     esac
2758 done
2759
2760 for e in $env; do
2761     eval "export $e"
2762 done
2763
2764 disabled logging && logfile=/dev/null
2765
2766 # Die early if licensing-related configure options are incompatible.
2767 die_license_disabled() {
2768     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2769 }
2770
2771 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2772 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2773 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2774
2775 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2776
2777 # Disable all the library-specific components if the library itself
2778 # is disabled, see AVCODEC_LIST and following _LIST variables.
2779
2780 disable_components(){
2781     disabled ${1} && disable $(
2782         eval components="\$$(toupper ${1})_COMPONENTS"
2783         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2784     )
2785 }
2786
2787 map 'disable_components $v' $LIBRARY_LIST
2788
2789 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2790 set >> $logfile
2791
2792 case "$toolchain" in
2793     *-asan)
2794         cc_default="${toolchain%-asan}"
2795         add_cflags  -fsanitize=address
2796         add_ldflags -fsanitize=address
2797     ;;
2798     *-msan)
2799         cc_default="${toolchain%-msan}"
2800         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2801         add_ldflags -fsanitize=memory
2802     ;;
2803     *-tsan)
2804         cc_default="${toolchain%-tsan}"
2805         add_cflags  -fsanitize=thread -pie
2806         add_ldflags -fsanitize=thread -pie
2807         case "$toolchain" in
2808             gcc-tsan)
2809                 add_cflags  -fPIC
2810                 add_ldflags -fPIC
2811                 ;;
2812         esac
2813     ;;
2814     *-usan)
2815         cc_default="${toolchain%-usan}"
2816         add_cflags  -fsanitize=undefined
2817         add_ldflags -fsanitize=undefined
2818         case "$toolchain" in
2819             clang-usan)
2820                 add_cflags -O1
2821                 ;;
2822         esac
2823     ;;
2824     valgrind-*)
2825         target_exec_default="valgrind"
2826         case "$toolchain" in
2827             valgrind-massif)
2828                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2829                 ;;
2830             valgrind-memcheck)
2831                 target_exec_args="--track-origins=yes --leak-check=full"
2832                 ;;
2833         esac
2834     ;;
2835     msvc)
2836         # Check whether the current MSVC version needs the C99 converter.
2837         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2838         # support enough of C99 to build libav. Default to the new
2839         # behaviour if the regexp was unable to match anything, since this
2840         # successfully parses the version number of existing supported
2841         # versions that require the converter (MSVC 2010 and 2012).
2842         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2843         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2844             cc_default="cl"
2845         else
2846             cc_default="c99wrap cl"
2847         fi
2848         ld_default="$source_path/compat/windows/mslink"
2849         nm_default="dumpbin -symbols"
2850         ar_default="lib"
2851         case "$arch" in
2852         arm*)
2853             as_default="armasm"
2854             ;;
2855         esac
2856         target_os_default="win32"
2857         # Use a relative path for TMPDIR. This makes sure all the
2858         # ffconf temp files are written with a relative path, avoiding
2859         # issues with msys/win32 path conversion for MSVC parameters
2860         # such as -Fo<file> or -out:<file>.
2861         TMPDIR=.
2862     ;;
2863     icl)
2864         cc_default="icl"
2865         ld_default="xilink"
2866         nm_default="dumpbin -symbols"
2867         ar_default="xilib"
2868         target_os_default="win32"
2869         TMPDIR=.
2870     ;;
2871     gcov)
2872         add_cflags  -fprofile-arcs -ftest-coverage
2873         add_ldflags -fprofile-arcs -ftest-coverage
2874     ;;
2875     llvm-cov)
2876         add_cflags -fprofile-arcs -ftest-coverage
2877         add_ldflags --coverage
2878     ;;
2879     hardened)
2880         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2881         add_cflags   -fno-strict-overflow -fstack-protector-all
2882         add_ldflags  -Wl,-z,relro -Wl,-z,now
2883     ;;
2884     ?*)
2885         die "Unknown toolchain $toolchain"
2886     ;;
2887 esac
2888
2889 test -n "$cross_prefix" && enable cross_compile
2890
2891 if enabled cross_compile; then
2892     test -n "$arch" && test -n "$target_os" ||
2893         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2894 fi
2895
2896 ar_default="${cross_prefix}${ar_default}"
2897 cc_default="${cross_prefix}${cc_default}"
2898 occ_default="${cross_prefix}${occ_default}"
2899 nm_default="${cross_prefix}${nm_default}"
2900 pkg_config_default="${cross_prefix}${pkg_config_default}"
2901 ranlib="${cross_prefix}${ranlib}"
2902 strip="${cross_prefix}${strip}"
2903
2904 sysinclude_default="${sysroot}/usr/include"
2905
2906 set_default arch cc pkg_config sysinclude target_exec target_os
2907 enabled cross_compile || host_cc_default=$cc
2908 set_default host_cc
2909
2910 if ! $pkg_config --version >/dev/null 2>&1; then
2911     warn "$pkg_config not found, library detection may fail."
2912     pkg_config=false
2913 fi
2914
2915 exesuf() {
2916     case $1 in
2917         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2918     esac
2919 }
2920
2921 EXESUF=$(exesuf $target_os)
2922 HOSTEXESUF=$(exesuf $host_os)
2923
2924 # set temporary file name
2925 : ${TMPDIR:=$TEMPDIR}
2926 : ${TMPDIR:=$TMP}
2927 : ${TMPDIR:=/tmp}
2928
2929 if ! check_cmd mktemp -u XXXXXX; then
2930     # simple replacement for missing mktemp
2931     # NOT SAFE FOR GENERAL USE
2932     mktemp(){
2933         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2934     }
2935 fi
2936
2937 tmpfile(){
2938     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2939         (set -C; exec > $tmp) 2>/dev/null ||
2940         die "Unable to create temporary file in $TMPDIR."
2941     append TMPFILES $tmp
2942     eval $1=$tmp
2943 }
2944
2945 trap 'rm -f -- $TMPFILES' EXIT
2946
2947 tmpfile TMPASM .asm
2948 tmpfile TMPC   .c
2949 tmpfile TMPE   $EXESUF
2950 tmpfile TMPH   .h
2951 tmpfile TMPO   .o
2952 tmpfile TMPS   .S
2953 tmpfile TMPSH  .sh
2954 tmpfile TMPV   .ver
2955
2956 unset -f mktemp
2957
2958 chmod +x $TMPE
2959
2960 # make sure we can execute files in $TMPDIR
2961 cat > $TMPSH 2>> $logfile <<EOF
2962 #! /bin/sh
2963 EOF
2964 chmod +x $TMPSH >> $logfile 2>&1
2965 if ! $TMPSH >> $logfile 2>&1; then
2966     cat <<EOF
2967 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2968 variable to another directory and make sure that it is not mounted noexec.
2969 EOF
2970     die "Sanity test failed."
2971 fi
2972
2973 armasm_flags(){
2974     for flag; do
2975         case $flag in
2976             # Filter out MSVC cl.exe options from cflags that shouldn't
2977             # be passed to gas-preprocessor
2978             -M[TD]*)                                            ;;
2979             *)                  echo $flag                      ;;
2980         esac
2981    done
2982 }
2983
2984 ccc_flags(){
2985     for flag; do
2986         case $flag in
2987             -std=c99)           echo -c99                       ;;
2988             -mcpu=*)            echo -arch ${flag#*=}           ;;
2989             -mieee)             echo -ieee                      ;;
2990             -O*|-fast)          echo $flag                      ;;
2991             -fno-math-errno)    echo -assume nomath_errno       ;;
2992             -g)                 echo -g3                        ;;
2993             -Wall)              echo -msg_enable level2         ;;
2994             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2995             -Wl,*)              echo $flag                      ;;
2996             -f*|-W*)                                            ;;
2997             *)                  echo $flag                      ;;
2998         esac
2999    done
3000 }
3001
3002 cparser_flags(){
3003     for flag; do
3004         case $flag in
3005             -Wno-switch)             echo -Wno-switch-enum ;;
3006             -Wno-format-zero-length) ;;
3007             -Wdisabled-optimization) ;;
3008             -Wno-pointer-sign)       echo -Wno-other ;;
3009             *)                       echo $flag ;;
3010         esac
3011     done
3012 }
3013
3014 msvc_common_flags(){
3015     for flag; do
3016         case $flag in
3017             # In addition to specifying certain flags under the compiler
3018             # specific filters, they must be specified here as well or else the
3019             # generic catch all at the bottom will print the original flag.
3020             -Wall)                ;;
3021             -std=c99)             ;;
3022             # Common flags
3023             -fomit-frame-pointer) ;;
3024             -g)                   echo -Z7 ;;
3025             -fno-math-errno)      ;;
3026             -fno-common)          ;;
3027             -fno-signed-zeros)    ;;
3028             -fPIC)                ;;
3029             -mthumb)              ;;
3030             -march=*)             ;;
3031             -lz)                  echo zlib.lib ;;
3032             -lavicap32)           echo vfw32.lib user32.lib ;;
3033             -lx264)               echo libx264.lib ;;
3034             -l*)                  echo ${flag#-l}.lib ;;
3035             -L*)                  echo -libpath:${flag#-L} ;;
3036             *)                    echo $flag ;;
3037         esac
3038     done
3039 }
3040
3041 msvc_flags(){
3042     msvc_common_flags "$@"
3043     for flag; do
3044         case $flag in
3045             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3046                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3047                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3048                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3049         esac
3050     done
3051 }
3052
3053 icl_flags(){
3054     msvc_common_flags "$@"
3055     for flag; do
3056         case $flag in
3057             # Despite what Intel's documentation says -Wall, which is supported
3058             # on Windows, does enable remarks so disable them here.
3059             -Wall)                echo $flag -Qdiag-disable:remark ;;
3060             -std=c99)             echo -Qstd=c99 ;;
3061         esac
3062     done
3063 }
3064
3065 pgi_flags(){
3066     for flag; do
3067         case $flag in
3068             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3069             -fomit-frame-pointer) echo -Mnoframe ;;
3070             -g)                   echo -gopt ;;
3071             *)                    echo $flag ;;
3072         esac
3073     done
3074 }
3075
3076 suncc_flags(){
3077     for flag; do
3078         case $flag in
3079             -march=*|-mcpu=*)
3080                 case "${flag#*=}" in
3081                     native)                   echo -xtarget=native       ;;
3082                     v9|niagara)               echo -xarch=sparc          ;;
3083                     ultrasparc)               echo -xarch=sparcvis       ;;
3084                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3085                     i586|pentium)             echo -xchip=pentium        ;;
3086                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3087                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3088                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3089                     pentium4*)          echo -xtarget=pentium4           ;;
3090                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3091                     *-sse3)             echo -xarch=sse3                 ;;
3092                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3093                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3094                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3095                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3096                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3097                     k8|opteron|athlon64|athlon-fx)
3098                                                echo -xarch=sse2a         ;;
3099                     athlon*)                   echo -xarch=pentium_proa  ;;
3100                 esac
3101                 ;;
3102             -std=c99)             echo -xc99              ;;
3103             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3104             -fPIC)                echo -KPIC -xcode=pic32 ;;
3105             -W*,*)                echo $flag              ;;
3106             -f*-*|-W*|-mimpure-text)                      ;;
3107             -shared)              echo -G                 ;;
3108             *)                    echo $flag              ;;
3109         esac
3110     done
3111 }
3112
3113 tms470_flags(){
3114     for flag; do
3115         case $flag in
3116             -march=*|-mcpu=*)
3117                 case "${flag#*=}" in
3118                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3119                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3120                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3121                     armv6*|arm11*)          echo -mv=6   ;;
3122                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3123                                             echo -mv=5e  ;;
3124                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3125                 esac
3126                 ;;
3127             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3128             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3129             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3130             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3131             -msoft-float)   echo --float_support=vfplib       ;;
3132             -O[0-3]|-mf=*)  echo $flag                        ;;
3133             -g)             echo -g -mn                       ;;
3134             -pds=*)         echo $flag                        ;;
3135             -D*|-I*)        echo $flag                        ;;
3136             --gcc|--abi=*)  echo $flag                        ;;
3137             -me)            echo $flag                        ;;
3138         esac
3139     done
3140 }
3141
3142 probe_cc(){
3143     pfx=$1
3144     _cc=$2
3145
3146     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3147     unset _ld_o _ldflags _ld_lib _ld_path
3148     unset _depflags _DEPCMD _DEPFLAGS
3149     _flags_filter=echo
3150
3151     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3152         _type=llvm_gcc
3153         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3154         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3155         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3156         _cflags_speed='-O3'
3157         _cflags_size='-Os'
3158     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3159         _type=gcc
3160         gcc_version=$($_cc --version | head -n1)
3161         gcc_basever=$($_cc -dumpversion)
3162         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3163         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3164         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3165         if ! $_cc -dumpversion | grep -q '^2\.'; then
3166             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3167         fi
3168         _cflags_speed='-O3'
3169         _cflags_size='-Os'
3170     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3171         _type=icc
3172         _ident=$($_cc --version | head -n1)
3173         _depflags='-MMD'
3174         _cflags_speed='-O3'
3175         _cflags_size='-Os'
3176         _cflags_noopt='-O1'
3177     elif $_cc -v 2>&1 | grep -q xlc; then
3178         _type=xlc
3179         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3180         _cflags_speed='-O5'
3181         _cflags_size='-O5 -qcompact'
3182     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3183         _type=ccc
3184         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3185         _DEPFLAGS='-M'
3186         _cflags_speed='-fast'
3187         _cflags_size='-O1'
3188         _flags_filter=ccc_flags
3189     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3190         test -d "$sysroot" || die "No valid sysroot specified."
3191         _type=armcc
3192         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3193         armcc_conf="$PWD/armcc.conf"
3194         $_cc --arm_linux_configure                 \
3195              --arm_linux_config_file="$armcc_conf" \
3196              --configure_sysroot="$sysroot"        \
3197              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3198              die "Error creating armcc configuration file."
3199         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3200         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3201         as_default="${cross_prefix}gcc"
3202         _depflags='-MMD'
3203         _cflags_speed='-O3'
3204         _cflags_size='-Os'
3205     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3206         _type=tms470
3207         _ident=$($_cc -version | head -n1 | tr -s ' ')
3208         _flags='--gcc --abi=eabi -me'
3209         _cc_e='-ppl -fe=$@'
3210         _cc_o='-fe=$@'
3211         _depflags='-ppa -ppd=$(@:.o=.d)'
3212         _cflags_speed='-O3 -mf=5'
3213         _cflags_size='-O3 -mf=2'
3214         _flags_filter=tms470_flags
3215     elif $_cc -v 2>&1 | grep -q clang; then
3216         _type=clang
3217         _ident=$($_cc --version 2>/dev/null | head -n1)
3218         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3219         _cflags_speed='-O3'
3220         _cflags_size='-Os'
3221     elif $_cc -V 2>&1 | grep -q Sun; then
3222         _type=suncc
3223         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3224         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3225         _DEPFLAGS='-xM1 -xc99'
3226         _ldflags='-std=c99'
3227         _cflags_speed='-O5'
3228         _cflags_size='-O5 -xspace'
3229         _flags_filter=suncc_flags
3230     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3231         _type=pathscale
3232         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3233         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3234         _cflags_speed='-O2'
3235         _cflags_size='-Os'
3236         _flags_filter='filter_out -Wdisabled-optimization'
3237     elif $_cc -v 2>&1 | grep -q Open64; then
3238         _type=open64
3239         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3240         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3241         _cflags_speed='-O2'
3242         _cflags_size='-Os'
3243         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3244     elif $_cc -V 2>&1 | grep -q Portland; then
3245         _type=pgi
3246         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3247         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3248         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3249         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3250         _cflags_noopt="-O1"
3251         _flags_filter=pgi_flags
3252     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3253         _type=armasm
3254         _ident=$($_cc | head -n1)
3255         # 4509: "This form of conditional instruction is deprecated"
3256         _flags="-nologo -ignore 4509"
3257         _flags_filter=armasm_flags
3258     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3259         _type=msvc
3260         _ident=$($_cc 2>&1 | head -n1)
3261         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3262         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3263         _cflags_speed="-O2"
3264         _cflags_size="-O1"
3265         if $_cc -nologo- 2>&1 | grep -q Linker; then
3266             _ld_o='-out:$@'
3267         else
3268             _ld_o='-Fe$@'
3269         fi
3270         _cc_o='-Fo$@'
3271         _cc_e='-P -Fi$@'
3272         _flags_filter=msvc_flags
3273         _ld_lib='lib%.a'
3274         _ld_path='-libpath:'
3275         _flags='-nologo'
3276     elif $_cc 2>&1 | grep -q Intel; then
3277         _type=icl
3278         _ident=$($_cc 2>&1 | head -n1)
3279         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3280         # Not only is O3 broken on 13.x+ but it is slower on all previous
3281         # versions (tested) as well.
3282         _cflags_speed="-O2"
3283         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3284         if $_cc 2>&1 | grep -q Linker; then
3285             _ld_o='-out:$@'
3286         else
3287             _ld_o='-Fe$@'
3288         fi
3289         _cc_o='-Fo$@'
3290         _cc_e='-P'
3291         _flags_filter=icl_flags
3292         _ld_lib='lib%.a'
3293         _ld_path='-libpath:'
3294         # -Qdiag-error to make icl error when seeing certain unknown arguments
3295         _flags='-nologo -Qdiag-error:4044,10157'
3296         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3297         # with MSVC which enables it by default.
3298         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3299     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3300         # lld can emulate multiple different linkers; in ms link.exe mode,
3301         # the -? parameter gives the help output which contains an identifyable
3302         # string, while it gives an error in other modes.
3303         _type=lld-link
3304         # The link.exe mode doesn't have a switch for getting the version,
3305         # but we can force it back to gnu mode and get the version from there.
3306         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3307         _ld_o='-out:$@'
3308         _flags_filter=msvc_flags
3309         _ld_lib='lib%.a'
3310         _ld_path='-libpath:'
3311     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3312         _type=cparser
3313         _ident=$($_cc --version | head -n1)
3314         _depflags='-MMD'
3315         _cflags_speed='-O4'
3316         _cflags_size='-O2'
3317         _flags_filter=cparser_flags
3318     fi
3319
3320     eval ${pfx}_type=\$_type
3321     eval ${pfx}_ident=\$_ident
3322 }
3323
3324 set_ccvars(){
3325     eval ${1}_C=\${_cc_c-\${${1}_C}}
3326     eval ${1}_E=\${_cc_e-\${${1}_E}}
3327     eval ${1}_O=\${_cc_o-\${${1}_O}}
3328
3329     if [ -n "$_depflags" ]; then
3330         eval ${1}_DEPFLAGS=\$_depflags
3331     else
3332         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3333         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3334         eval DEP${1}FLAGS=\$_flags
3335     fi
3336 }
3337
3338 probe_cc cc "$cc"
3339 cflags_filter=$_flags_filter
3340 cflags_speed=$_cflags_speed
3341 cflags_size=$_cflags_size
3342 cflags_noopt=$_cflags_noopt
3343 add_cflags $_flags $_cflags
3344 cc_ldflags=$_ldflags
3345 set_ccvars CC
3346
3347 probe_cc hostcc "$host_cc"
3348 host_cflags_filter=$_flags_filter
3349 add_host_cflags  $_flags $_cflags
3350 set_ccvars HOSTCC
3351
3352 test -n "$cc_type" && enable $cc_type ||
3353     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3354
3355 : ${as_default:=$cc}
3356 : ${objcc_default:=$cc}
3357 : ${dep_cc_default:=$cc}
3358 : ${ld_default:=$cc}
3359 : ${host_ld_default:=$host_cc}
3360 set_default ar as objcc dep_cc ld host_ld
3361
3362 probe_cc as "$as"
3363 asflags_filter=$_flags_filter
3364 add_asflags $_flags $_cflags
3365 set_ccvars AS
3366
3367 probe_cc objcc "$objcc"
3368 objcflags_filter=$_flags_filter
3369 add_objcflags $_flags $_cflags
3370 set_ccvars OBJC
3371
3372 probe_cc ld "$ld"
3373 ldflags_filter=$_flags_filter
3374 add_ldflags $_flags $_ldflags
3375 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3376 LD_O=${_ld_o-$LD_O}
3377 LD_LIB=${_ld_lib-$LD_LIB}
3378 LD_PATH=${_ld_path-$LD_PATH}
3379
3380 probe_cc hostld "$host_ld"
3381 host_ldflags_filter=$_flags_filter
3382 add_host_ldflags $_flags $_ldflags
3383 HOSTLD_O=${_ld_o-$HOSTLD_O}
3384
3385 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3386     probe_cc depcc "$dep_cc"
3387     CCDEP=${_DEPCMD:-$DEPCMD}
3388     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3389     DEPCCFLAGS=$_flags
3390 fi
3391
3392 if $ar 2>&1 | grep -q Microsoft; then
3393     arflags="-nologo"
3394     ar_o='-out:$@'
3395 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3396     arflags="rq"
3397     ar_o='$@'
3398 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3399     arflags='-Xany -r -c'
3400     ar_o='$@'
3401 else
3402     arflags="rc"
3403     ar_o='$@'
3404 fi
3405
3406 add_cflags $extra_cflags
3407 add_objcflags $extra_objcflags
3408 add_asflags $extra_cflags
3409
3410 if test -n "$sysroot"; then
3411     case "$cc_type" in
3412         gcc|llvm_gcc|clang)
3413             add_cppflags --sysroot="$sysroot"
3414             add_ldflags --sysroot="$sysroot"
3415         ;;
3416         tms470)
3417             add_cppflags -I"$sysinclude"
3418             add_ldflags  --sysroot="$sysroot"
3419         ;;
3420     esac
3421 fi
3422
3423 if test "$cpu" = host; then
3424     enabled cross_compile &&
3425         die "--cpu=host makes no sense when cross-compiling."
3426
3427     case "$cc_type" in
3428         gcc|llvm_gcc)
3429             check_native(){
3430                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3431                 sed -n "/cc1.*$1=/{
3432                             s/.*$1=\\([^ ]*\\).*/\\1/
3433                             p
3434                             q
3435                         }" $TMPE
3436             }
3437             cpu=$(check_native -march || check_native -mcpu)
3438         ;;
3439     esac
3440
3441     test "${cpu:-host}" = host &&
3442         die "--cpu=host not supported with compiler $cc"
3443 fi
3444
3445 # Deal with common $arch aliases
3446 case "$arch" in
3447     aarch64|arm64)
3448         arch="aarch64"
3449     ;;
3450     arm*)
3451         arch="arm"
3452     ;;
3453     mips*|IP*)
3454         case "$arch" in
3455         *el)
3456             add_cppflags -EL
3457             add_ldflags -EL
3458         ;;
3459         *eb)
3460             add_cppflags -EB
3461             add_ldflags -EB
3462         ;;
3463         esac
3464         arch="mips"
3465     ;;
3466     parisc*|hppa*)
3467         arch="parisc"
3468     ;;
3469     "Power Macintosh"|ppc*|powerpc*)
3470         arch="ppc"
3471     ;;
3472     s390|s390x)
3473         arch="s390"
3474     ;;
3475     sh4|sh)
3476         arch="sh4"
3477     ;;
3478     sun4u|sparc*)
3479         arch="sparc"
3480     ;;
3481     tilegx|tile-gx)
3482         arch="tilegx"
3483     ;;
3484     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3485         arch="x86"
3486     ;;
3487 esac
3488
3489 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3490 enable $arch
3491
3492 # Add processor-specific flags
3493 if enabled aarch64; then
3494
3495     case $cpu in
3496         armv*)
3497             cpuflags="-march=$cpu"
3498         ;;
3499         *)
3500             cpuflags="-mcpu=$cpu"
3501         ;;
3502     esac
3503
3504 elif enabled alpha; then
3505
3506     cpuflags="-mcpu=$cpu"
3507
3508 elif enabled arm; then
3509
3510     check_arm_arch() {
3511         check_cpp_condition stddef.h \
3512             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3513             $cpuflags
3514     }
3515
3516     probe_arm_arch() {
3517         if   check_arm_arch 4;        then echo armv4
3518         elif check_arm_arch 4T;       then echo armv4t
3519         elif check_arm_arch 5;        then echo armv5
3520         elif check_arm_arch 5E;       then echo armv5e
3521         elif check_arm_arch 5T;       then echo armv5t
3522         elif check_arm_arch 5TE;      then echo armv5te
3523         elif check_arm_arch 5TEJ;     then echo armv5te
3524         elif check_arm_arch 6;        then echo armv6
3525         elif check_arm_arch 6J;       then echo armv6j
3526         elif check_arm_arch 6K;       then echo armv6k
3527         elif check_arm_arch 6Z;       then echo armv6z
3528         elif check_arm_arch 6ZK;      then echo armv6zk
3529         elif check_arm_arch 6T2;      then echo armv6t2
3530         elif check_arm_arch 7;        then echo armv7
3531         elif check_arm_arch 7A  7_A;  then echo armv7-a
3532         elif check_arm_arch 7S;       then echo armv7-a
3533         elif check_arm_arch 7R  7_R;  then echo armv7-r
3534         elif check_arm_arch 7M  7_M;  then echo armv7-m
3535         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3536         elif check_arm_arch 8A  8_A;  then echo armv8-a
3537         fi
3538     }
3539
3540     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3541
3542     case $cpu in
3543         armv*)
3544             cpuflags="-march=$cpu"
3545             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3546         ;;
3547         *)
3548             cpuflags="-mcpu=$cpu"
3549             case $cpu in
3550                 cortex-a*)                               subarch=armv7a  ;;
3551                 cortex-r*)                               subarch=armv7r  ;;
3552                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3553                 arm11*)                                  subarch=armv6   ;;
3554                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3555                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3556                 *)                             subarch=$(probe_arm_arch) ;;
3557             esac
3558         ;;
3559     esac
3560
3561     case "$subarch" in
3562         armv5t*)    enable fast_clz                ;;
3563         armv[6-8]*) enable fast_clz fast_unaligned ;;
3564     esac
3565
3566 elif enabled avr32; then
3567
3568     case $cpu in
3569         ap7[02]0[0-2])
3570             subarch="avr32_ap"
3571             cpuflags="-mpart=$cpu"
3572         ;;
3573         ap)
3574             subarch="avr32_ap"
3575             cpuflags="-march=$cpu"
3576         ;;
3577         uc3[ab]*)
3578             subarch="avr32_uc"
3579             cpuflags="-mcpu=$cpu"
3580         ;;
3581         uc)
3582             subarch="avr32_uc"
3583             cpuflags="-march=$cpu"
3584         ;;
3585     esac
3586
3587 elif enabled bfin; then
3588
3589     cpuflags="-mcpu=$cpu"
3590
3591 elif enabled mips; then
3592
3593     cpuflags="-march=$cpu"
3594
3595 elif enabled ppc; then
3596
3597     disable ldbrx
3598
3599     case $(tolower $cpu) in
3600         601|ppc601|powerpc601)
3601             cpuflags="-mcpu=601"
3602             disable altivec
3603         ;;
3604         603*|ppc603*|powerpc603*)
3605             cpuflags="-mcpu=603"
3606             disable altivec
3607         ;;
3608         604*|ppc604*|powerpc604*)
3609             cpuflags="-mcpu=604"
3610             disable altivec
3611         ;;
3612         g3|75*|ppc75*|powerpc75*)
3613             cpuflags="-mcpu=750"
3614             disable altivec
3615         ;;
3616         g4|745*|ppc745*|powerpc745*)
3617             cpuflags="-mcpu=7450"
3618             disable vsx
3619         ;;
3620         74*|ppc74*|powerpc74*)
3621             cpuflags="-mcpu=7400"
3622             disable vsx
3623         ;;
3624         g5|970|ppc970|powerpc970)
3625             cpuflags="-mcpu=970"
3626             disable vsx
3627         ;;
3628         power[3-6]*)
3629             cpuflags="-mcpu=$cpu"
3630             disable vsx
3631         ;;
3632         power[7-8]*)
3633             cpuflags="-mcpu=$cpu"
3634             enable ldbrx
3635         ;;
3636         cell)
3637             cpuflags="-mcpu=cell"
3638             enable ldbrx
3639             disable vsx
3640         ;;
3641         e500mc)
3642             cpuflags="-mcpu=e500mc"
3643             disable altivec
3644         ;;
3645         e500v2)
3646             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3647             disable altivec
3648             disable dcbzl
3649         ;;
3650         e500)
3651             cpuflags="-mcpu=8540 -mhard-float"
3652             disable altivec
3653             disable dcbzl
3654         ;;
3655     esac
3656
3657 elif enabled sparc; then
3658
3659     case $cpu in
3660         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3661             cpuflags="-mcpu=$cpu"
3662         ;;
3663         ultrasparc*|niagara[234])
3664             cpuflags="-mcpu=$cpu"
3665         ;;
3666     esac
3667
3668 elif enabled x86; then
3669
3670     case $cpu in
3671         i[345]86|pentium)
3672             cpuflags="-march=$cpu"
3673             disable i686
3674             disable mmx
3675         ;;
3676         # targets that do NOT support nopl and conditional mov (cmov)
3677         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3678             cpuflags="-march=$cpu"
3679             disable i686
3680         ;;
3681         # targets that do support nopl and conditional mov (cmov)
3682         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3683             cpuflags="-march=$cpu"
3684             enable i686
3685             enable fast_cmov
3686         ;;
3687         # targets that do support conditional mov but on which it's slow
3688         pentium4|pentium4m|prescott|nocona)
3689             cpuflags="-march=$cpu"
3690             enable i686
3691             disable fast_cmov
3692         ;;
3693     esac
3694
3695 fi
3696
3697 if [ "$cpu" != generic ]; then
3698     add_cflags  $cpuflags
3699     add_asflags $cpuflags
3700     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3701 fi
3702
3703 # compiler sanity check
3704 check_exec <<EOF
3705 int main(void){ return 0; }
3706 EOF
3707 if test "$?" != 0; then
3708     echo "$cc is unable to create an executable file."
3709     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3710         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3711         echo "Only do this if you know what cross compiling means."
3712     fi
3713     die "C compiler test failed."
3714 fi
3715
3716 add_cppflags -D_ISOC99_SOURCE
3717
3718 # some compilers silently accept -std=c11, so we also need to check that the
3719 # version macro is defined properly
3720 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3721     add_cflags -std=c11
3722 else
3723     check_cflags -std=c99
3724 fi
3725
3726 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3727 #include <stdlib.h>
3728 EOF
3729 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3730 #include <stdlib.h>
3731 EOF
3732
3733 add_host_cppflags -D_ISOC99_SOURCE
3734 check_host_cflags -std=c99
3735 check_host_cflags -Wall
3736 check_host_cflags -O3
3737
3738 check_64bit(){
3739     arch32=$1
3740     arch64=$2
3741     expr=$3
3742     check_code cc "" "int test[2*($expr) - 1]" &&
3743         subarch=$arch64 || subarch=$arch32
3744 }
3745
3746 case "$arch" in
3747     aarch64|alpha|ia64)
3748         spic=$shared
3749     ;;
3750     mips)
3751         check_64bit mips mips64 '_MIPS_SIM > 1'
3752         spic=$shared
3753     ;;
3754     parisc)
3755         check_64bit parisc parisc64 'sizeof(void *) > 4'
3756         spic=$shared
3757     ;;
3758     ppc)
3759         check_64bit ppc ppc64 'sizeof(void *) > 4'
3760         spic=$shared
3761     ;;
3762     s390)
3763         check_64bit s390 s390x 'sizeof(void *) > 4'
3764         spic=$shared
3765     ;;
3766     sparc)
3767         check_64bit sparc sparc64 'sizeof(void *) > 4'
3768         spic=$shared
3769     ;;
3770     x86)
3771         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3772         if test "$subarch" = "x86_64"; then
3773             spic=$shared
3774         fi
3775     ;;
3776 esac
3777
3778 enable $subarch
3779 enabled spic && enable_weak pic
3780
3781 # OS specific
3782 case $target_os in
3783     aix)
3784         SHFLAGS=-shared
3785         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3786         enabled shared && add_ldflags -Wl,-brtl
3787         ;;
3788     android)
3789         disable symver
3790         enable section_data_rel_ro
3791         SLIB_INSTALL_NAME='$(SLIBNAME)'
3792         SLIB_INSTALL_LINKS=
3793         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3794         ;;
3795     haiku)
3796         prefix_default="/boot/common"
3797         network_extralibs="-lnetwork"
3798         host_libs=
3799         ;;
3800     sunos)
3801         SHFLAGS='-shared -Wl,-h,$$(@F)'
3802         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3803         network_extralibs="-lsocket -lnsl"
3804         # When using suncc to build, the Solaris linker will mark
3805         # an executable with each instruction set encountered by
3806         # the Solaris assembler.  As our libraries contain their own
3807         # guards for processor-specific code, instead suppress
3808         # generation of the HWCAPS ELF section on Solaris x86 only.
3809         enabled_all suncc x86 &&
3810             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3811             add_ldflags -Wl,-M,mapfile
3812         nm_default='nm -P -g'
3813         version_script='-M'
3814         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3815         ;;
3816     netbsd)
3817         disable symver
3818         oss_indev_extralibs="-lossaudio"
3819         oss_outdev_extralibs="-lossaudio"
3820         ;;
3821     openbsd|bitrig)
3822         disable symver
3823         SHFLAGS='-shared'
3824         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3825         SLIB_INSTALL_LINKS=
3826         oss_indev_extralibs="-lossaudio"
3827         oss_outdev_extralibs="-lossaudio"
3828         ;;
3829     dragonfly)
3830         disable symver
3831         ;;
3832     freebsd)
3833         ;;
3834     bsd/os)
3835         add_extralibs -lpoll -lgnugetopt
3836         ;;
3837     darwin)
3838         enabled ppc && add_asflags -force_cpusubtype_ALL
3839         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3840         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3841         add_ldflags -Wl,-dynamic,-search_paths_first
3842         SLIBSUF=".dylib"
3843         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3844         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3845         objformat="macho"
3846         enabled x86_64 && objformat="macho64"
3847         enabled_any pic shared ||
3848             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3849         check_header dispatch/dispatch.h &&
3850             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3851         ;;
3852     msys*)
3853         die "Native MSYS builds are discouraged, please use the MINGW environment."
3854         ;;
3855     mingw32*|mingw64*)
3856         if test $target_os = "mingw32ce"; then
3857             disable network
3858         else
3859             target_os=mingw32
3860         fi
3861         LIBTARGET=i386
3862         if enabled x86_64; then
3863             LIBTARGET="i386:x86-64"
3864         elif enabled arm; then
3865             LIBTARGET=arm-wince
3866         fi
3867         check_ldflags -Wl,--nxcompat
3868         check_ldflags -Wl,--dynamicbase
3869         shlibdir_default="$bindir_default"
3870         SLIBPREF=""
3871         SLIBSUF=".dll"
3872         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3873         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3874         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3875         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3876         SLIB_INSTALL_LINKS=
3877         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3878         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3879         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3880         objformat="win32"
3881         dlltool="${cross_prefix}dlltool"
3882         ranlib=:
3883         enable dos_paths
3884         ;;
3885     win32|win64)
3886         disable symver
3887         if enabled shared; then
3888             # Link to the import library instead of the normal static library
3889             # for shared libs.
3890             LD_LIB='%.lib'
3891             # Cannot build both shared and static libs with MSVC or icl.
3892             disable static
3893         fi
3894         shlibdir_default="$bindir_default"
3895         SLIBPREF=""
3896         SLIBSUF=".dll"
3897         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3898         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3899         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3900         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3901         SLIB_INSTALL_LINKS=
3902         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3903         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3904         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3905         objformat="win32"
3906         ranlib=:
3907         enable dos_paths
3908         ;;
3909     cygwin*)
3910         target_os=cygwin
3911         shlibdir_default="$bindir_default"
3912         SLIBPREF="cyg"
3913         SLIBSUF=".dll"
3914         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3915         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3916         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3917         SLIB_INSTALL_LINKS=
3918         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3919         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3920         objformat="win32"
3921         enable dos_paths
3922         ;;
3923     *-dos|freedos|opendos)
3924         network_extralibs="-lsocket"
3925         objformat="coff"
3926         enable dos_paths
3927         add_cppflags -U__STRICT_ANSI__
3928         ;;
3929     linux)
3930         enable dv1394
3931         enable section_data_rel_ro
3932         ;;
3933     irix*)
3934         target_os=irix
3935         ranlib="echo ignoring ranlib"
3936         ;;
3937     os/2*)
3938         ln_s="cp -f"
3939         objformat="aout"
3940         add_cppflags -D_GNU_SOURCE
3941         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3942         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3943         LIBSUF="_s.a"
3944         SLIBPREF=""
3945         SLIBSUF=".dll"
3946         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3947         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3948         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3949             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3950             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3951             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3952             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3953         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3954             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3955         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3956         enable dos_paths
3957         ;;
3958     gnu/kfreebsd)
3959         add_cppflags -D_BSD_SOURCE
3960         ;;
3961     gnu)
3962         ;;
3963     qnx)
3964         add_cppflags -D_QNX_SOURCE
3965         network_extralibs="-lsocket"
3966         ;;
3967     symbian)
3968         SLIBSUF=".dll"
3969         enable dos_paths
3970         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3971         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3972         add_ldflags -Wl,--target1-abs,--no-undefined \
3973                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3974                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3975         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3976                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3977                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3978         ;;
3979     osf1)
3980         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3981         ;;
3982     minix)
3983         ;;
3984     none)
3985         ;;
3986     *)
3987         die "Unknown OS '$target_os'."
3988         ;;
3989 esac
3990
3991 # determine libc flavour
3992
3993 probe_libc(){
3994     pfx=$1
3995     pfx_no_=${pfx%_}
3996     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3997     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3998         eval ${pfx}libc_type=uclibc
3999         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4000     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4001         eval ${pfx}libc_type=glibc
4002         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4003     # MinGW headers can be installed on Cygwin, so check for newlib first.
4004     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4005         eval ${pfx}libc_type=newlib
4006         add_${pfx}cppflags -U__STRICT_ANSI__
4007     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4008     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4009         eval ${pfx}libc_type=mingw64
4010         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4011         eval test \$${pfx_no_}cc_type = "gcc" &&
4012             add_${pfx}cppflags -D__printf__=__gnu_printf__
4013     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4014          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4015         eval ${pfx}libc_type=mingw32
4016         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4017             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4018             die "ERROR: MinGW32 runtime version must be >= 3.15."
4019         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4020         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4021             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4022         eval test \$${pfx_no_}cc_type = "gcc" &&
4023             add_${pfx}cppflags -D__printf__=__gnu_printf__
4024     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4025         eval ${pfx}libc_type=msvcrt
4026         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4027             if [ "$pfx" = host_ ]; then
4028                 add_host_cppflags -Dsnprintf=_snprintf
4029             else
4030                 add_compat strtod.o strtod=avpriv_strtod
4031                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4032                                              _snprintf=avpriv_snprintf  \
4033                                              vsnprintf=avpriv_vsnprintf
4034             fi
4035         fi
4036         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4037         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4038         # 0x601 by default unless something else is set by the user.
4039         # This can easily lead to us detecting functions only present
4040         # in such new versions and producing binaries requiring windows 7.0.
4041         # Therefore explicitly set the default to XP unless the user has
4042         # set something else on the command line.
4043         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4044         # family. For these cases, configure is free to use any functions
4045         # found in the SDK headers by default. (Alternatively, we could force
4046         # _WIN32_WINNT to 0x0602 in that case.)
4047         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4048             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4049 #ifdef WINAPI_FAMILY
4050 #include <winapifamily.h>
4051 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4052 #error not desktop
4053 #endif
4054 #endif
4055 EOF
4056         if [ "$pfx" = "" ]; then
4057             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4058         fi
4059     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4060         eval ${pfx}libc_type=klibc
4061     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4062         eval ${pfx}libc_type=bionic
4063     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4064         eval ${pfx}libc_type=solaris
4065         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4066     else
4067         eval ${pfx}libc_type=default
4068         add_${pfx}cppflags -D_DEFAULT_SOURCE
4069     fi
4070 }
4071
4072 probe_libc
4073 test -n "$libc_type" && enable libc_$libc_type
4074 probe_libc host_
4075 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4076
4077 case $libc_type in
4078     bionic)
4079         add_compat strtod.o strtod=avpriv_strtod
4080         ;;
4081 esac
4082
4083 # hacks for compiler/libc/os combinations
4084
4085 if enabled_all tms470 libc_glibc; then
4086     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"