configure: Add check_x86asm() helper function to simplify some expressions
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libaom            AV1 video encoding/decoding
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdc1394         IEEE 1394/Firewire camera input
194   --enable-libdcadec         DCA audio decoding
195   --enable-libfaac           AAC audio encoding
196   --enable-libfdk-aac        AAC audio encoding/decoding
197   --enable-libfontconfig     font configuration and management
198   --enable-libfreetype       font rendering
199   --enable-libgsm            GSM audio encoding/decoding
200   --enable-libhdcd           HDCD decoding filter
201   --enable-libilbc           ILBC audio encoding/decoding
202   --enable-libjack           JACK audio sound server
203   --enable-libkvazaar        HEVC video encoding
204   --enable-libmp3lame        MP3 audio encoding
205   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
206   --enable-libopencore-amrwb AMR-WB audio decoding
207   --enable-libopencv         computer vision
208   --enable-libopenh264       H.264 video encoding/decoding
209   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
210   --enable-libopus           Opus audio encoding/decoding
211   --enable-libpulse          Pulseaudio sound server
212   --enable-librtmp           RTMP streaming
213   --enable-libschroedinger   Dirac video encoding/decoding
214   --enable-libsnappy         snappy compression
215   --enable-libspeex          Speex audio encoding/decoding
216   --enable-libtheora         Theora video encoding/decoding
217   --enable-libtwolame        MP2 audio encoding
218   --enable-libvo-aacenc      AAC audio encoding
219   --enable-libvo-amrwbenc    AMR-WB audio encoding
220   --enable-libvorbis         Vorbis audio encoding/decoding
221   --enable-libvpx            VP* video encoding/decoding
222   --enable-libwavpack        Wavpack audio encoding/decoding
223   --enable-libwebp           WebP image encoding/decoding
224   --enable-libx264           H.264 video encoding
225   --enable-libx265           HEVC video encoding
226   --enable-libxavs           Chinese AVS video encoding
227   --enable-libxcb            X window system protocol communication
228   --enable-libxcb-shm        X11 shm communication [auto]
229   --enable-libxcb-xfixes     X11 mouse rendering [auto]
230   --enable-libxvid           MPEG-4 ASP video encoding
231   --enable-openssl           crypto
232   --enable-zlib              compression [autodetect]
233
234   The following libraries provide various hardware acceleration features:
235   --enable-amf     AMF video encoding code [auto]
236   --enable-cuda    Nvidia CUDA (dynamically linked)
237   --enable-cuvid   Nvidia CUVID video decode acceleration
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 [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
264                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
265                            valgrind-massif, valgrind-memcheck,
266                            msvc, icl, gcov, llvm-cov, hardened)
267   --nm=NM                  use nm tool
268   --ar=AR                  use archive tool AR [$ar_default]
269   --as=AS                  use assembler AS [$as_default]
270   --cc=CC                  use C compiler CC [$cc_default]
271   --objcc=OCC              use ObjC compiler OCC [$cc_default]
272   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
273   --ld=LD                  use linker LD
274   --x86asmexe=X86ASM       use x86 assembler X86ASM
275   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
276   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
277   --host-cc=HOSTCC         use host C compiler HOSTCC
278   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
279   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
280   --host-ld=HOSTLD         use host linker HOSTLD
281   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
282   --host-libs=HLIBS        use libs HLIBS when linking for host
283   --host-os=OS             compiler host OS [$target_os]
284   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
285   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
286   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
287   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
288   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
289   --extra-libs=ELIBS       add ELIBS [$ELIBS]
290   --extra-version=STRING   version string suffix []
291   --optflags=OPTFLAGS      override optimization-related compiler flags
292   --enable-pic             build position-independent code
293   --enable-thumb           compile for Thumb instruction set
294   --enable-lto             use link-time optimization
295   --env="ENV=override"     override the environment variables
296
297 Advanced options (experts only):
298   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
299   --custom-allocator=NAME  use a supported custom allocator
300   --disable-symver         disable symbol versioning
301   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
302   --disable-safe-bitstream-reader
303                            disable buffer boundary checking in bitreaders
304                            (faster, but may crash)
305   --enable-sram            allow use of on-chip SRAM
306
307 Optimization options (experts only):
308   --disable-asm            disable all assembly optimizations
309   --disable-altivec        disable AltiVec optimizations
310   --disable-vsx            disable VSX optimizations
311   --disable-power8         disable POWER8 optimizations
312   --disable-amd3dnow       disable 3DNow! optimizations
313   --disable-amd3dnowext    disable 3DNow! extended optimizations
314   --disable-mmx            disable MMX optimizations
315   --disable-mmxext         disable MMXEXT optimizations
316   --disable-sse            disable SSE optimizations
317   --disable-sse2           disable SSE2 optimizations
318   --disable-sse3           disable SSE3 optimizations
319   --disable-ssse3          disable SSSE3 optimizations
320   --disable-sse4           disable SSE4 optimizations
321   --disable-sse42          disable SSE4.2 optimizations
322   --disable-avx            disable AVX optimizations
323   --disable-xop            disable XOP optimizations
324   --disable-fma3           disable FMA3 optimizations
325   --disable-fma4           disable FMA4 optimizations
326   --disable-avx2           disable AVX2 optimizations
327   --disable-armv5te        disable armv5te optimizations
328   --disable-armv6          disable armv6 optimizations
329   --disable-armv6t2        disable armv6t2 optimizations
330   --disable-vfp            disable VFP optimizations
331   --disable-neon           disable NEON optimizations
332   --disable-inline-asm     disable use of inline assembly
333   --disable-x86asm         disable use of standalone x86 assembly
334
335 Developer options (useful when working on Libav itself):
336   --disable-debug          disable debugging symbols
337   --enable-debug=LEVEL     set the debug level [$debuglevel]
338   --disable-optimizations  disable compiler optimizations
339   --enable-extra-warnings  enable more compiler warnings
340   --samples=PATH           location of test samples for FATE, if not set use
341                            \$LIBAV_SAMPLES at make invocation time.
342   --enable-neon-clobber-test check NEON registers for clobbering (should be
343                            used only for debugging purposes)
344   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
345                            should be used only for debugging purposes)
346   --disable-valgrind-backtrace do not print a backtrace under Valgrind
347                            (only applies to --disable-optimizations builds)
348   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
349                            in the name) of tests whose result is ignored
350
351 NOTE: Object files are built at the place where configure is launched.
352 EOF
353   exit 0
354 }
355
356 log(){
357     echo "$@" >> $logfile
358 }
359
360 log_file(){
361     log BEGIN $1
362     i=1
363     while read line; do
364         printf '%5s   %s\n' "${i}" "${line}"
365         i=$(($i+1))
366     done < $1 >> $logfile
367     log END $1
368 }
369
370 echolog(){
371     log "$@"
372     echo "$@"
373 }
374
375 warn(){
376     log "WARNING: $*"
377     WARNINGS="${WARNINGS}WARNING: $*\n"
378 }
379
380 die(){
381     echolog "$@"
382     cat <<EOF
383
384 If you think configure made a mistake, make sure you are using the latest
385 version from Git.  If the latest version fails, report the problem to the
386 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
387 EOF
388     if disabled logging; then
389         cat <<EOF
390 Rerun configure with logging enabled (do not use --disable-logging), and
391 include the log this produces with your report.
392 EOF
393     else
394         cat <<EOF
395 Include the log file "$logfile" produced by configure as this will help
396 solving the problem.
397 EOF
398     fi
399     exit 1
400 }
401
402 # Avoid locale weirdness, besides we really just want to translate ASCII.
403 toupper(){
404     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
405 }
406
407 tolower(){
408     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
409 }
410
411 c_escape(){
412     echo "$*" | sed 's/["\\]/\\\0/g'
413 }
414
415 sh_quote(){
416     v=$(echo "$1" | sed "s/'/'\\\\''/g")
417     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
418     echo "$v"
419 }
420
421 cleanws(){
422     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
423 }
424
425 filter(){
426     pat=$1
427     shift
428     for v; do
429         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
430     done
431 }
432
433 filter_out(){
434     pat=$1
435     shift
436     for v; do
437         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
438     done
439 }
440
441 map(){
442     m=$1
443     shift
444     for v; do eval $m; done
445 }
446
447 add_suffix(){
448     suffix=$1
449     shift
450     for v; do echo ${v}${suffix}; done
451 }
452
453 set_all(){
454     value=$1
455     shift
456     for var in $*; do
457         eval $var=$value
458     done
459 }
460
461 set_weak(){
462     value=$1
463     shift
464     for var; do
465         eval : \${$var:=$value}
466     done
467 }
468
469 sanitize_var_name(){
470     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
471 }
472
473 set_sanitized(){
474     var=$1
475     shift
476     eval $(sanitize_var_name "$var")='$*'
477 }
478
479 get_sanitized(){
480     eval echo \$$(sanitize_var_name "$1")
481 }
482
483 pushvar(){
484     for pvar in $*; do
485         eval level=\${${pvar}_level:=0}
486         eval ${pvar}_${level}="\$$pvar"
487         eval ${pvar}_level=$(($level+1))
488     done
489 }
490
491 popvar(){
492     for pvar in $*; do
493         eval level=\${${pvar}_level:-0}
494         test $level = 0 && continue
495         eval level=$(($level-1))
496         eval $pvar="\${${pvar}_${level}}"
497         eval ${pvar}_level=$level
498         eval unset ${pvar}_${level}
499     done
500 }
501
502 enable(){
503     set_all yes $*
504 }
505
506 disable(){
507     set_all no $*
508 }
509
510 enable_weak(){
511     set_weak yes $*
512 }
513
514 disable_weak(){
515     set_weak no $*
516 }
517
518 enable_sanitized(){
519     for var; do
520         enable $(sanitize_var_name $var)
521     done
522 }
523
524 disable_sanitized(){
525     for var; do
526         disable $(sanitize_var_name $var)
527     done
528 }
529
530 do_enable_deep(){
531     for var; do
532         enabled $var && continue
533         eval sel="\$${var}_select"
534         eval sgs="\$${var}_suggest"
535         pushvar var sgs
536         enable_deep $sel
537         popvar sgs
538         enable_deep_weak $sgs
539         popvar var
540     done
541 }
542
543 enable_deep(){
544     do_enable_deep $*
545     enable $*
546 }
547
548 enable_deep_weak(){
549     for var; do
550         disabled $var && continue
551         pushvar var
552         do_enable_deep $var
553         popvar var
554         enable_weak $var
555     done
556 }
557
558 enabled(){
559     test "${1#!}" = "$1" && op="=" || op="!="
560     eval test "x\$${1#!}" $op "xyes"
561 }
562
563 disabled(){
564     test "${1#!}" = "$1" && op="=" || op="!="
565     eval test "x\$${1#!}" $op "xno"
566 }
567
568 enabled_all(){
569     for opt; do
570         enabled $opt || return 1
571     done
572 }
573
574 disabled_all(){
575     for opt; do
576         disabled $opt || return 1
577     done
578 }
579
580 enabled_any(){
581     for opt; do
582         enabled $opt && return 0
583     done
584 }
585
586 disabled_any(){
587     for opt; do
588         disabled $opt && return 0
589     done
590     return 1
591 }
592
593 set_default(){
594     for opt; do
595         eval : \${$opt:=\$${opt}_default}
596     done
597 }
598
599 is_in(){
600     value=$1
601     shift
602     for var in $*; do
603         [ $var = $value ] && return 0
604     done
605     return 1
606 }
607
608 check_deps(){
609     for cfg; do
610         enabled ${cfg}_checking && die "Circular dependency for $cfg."
611         disabled ${cfg}_checking && continue
612         enable ${cfg}_checking
613
614         eval dep_all="\$${cfg}_deps"
615         eval dep_any="\$${cfg}_deps_any"
616         eval dep_con="\$${cfg}_conflict"
617         eval dep_sel="\$${cfg}_select"
618         eval dep_sgs="\$${cfg}_suggest"
619         eval dep_ifa="\$${cfg}_if"
620         eval dep_ifn="\$${cfg}_if_any"
621
622         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
623         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
624         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
625
626         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
627         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
628         enabled_all  $dep_all || disable $cfg
629         enabled_any  $dep_any || disable $cfg
630         disabled_all $dep_con || disable $cfg
631         disabled_any $dep_sel && disable $cfg
632
633         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
634
635         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
636             # filter out library deps, these do not belong in extralibs
637             is_in $dep $LIBRARY_LIST && continue
638             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
639         done
640
641         disable ${cfg}_checking
642     done
643 }
644
645 print_config(){
646     pfx=$1
647     files=$2
648     shift 2
649     map 'eval echo "$v \${$v:-no}"' "$@" |
650     awk "BEGIN { split(\"$files\", files) }
651         {
652             c = \"$pfx\" toupper(\$1);
653             v = \$2;
654             sub(/yes/, 1, v);
655             sub(/no/,  0, v);
656             for (f in files) {
657                 file = files[f];
658                 if (file ~ /\\.h\$/) {
659                     printf(\"#define %s %d\\n\", c, v) >>file;
660                 } else if (file ~ /\\.asm\$/) {
661                     printf(\"%%define %s %d\\n\", c, v) >>file;
662                 } else if (file ~ /\\.mak\$/) {
663                     n = -v ? \"\" : \"!\";
664                     printf(\"%s%s=yes\\n\", n, c) >>file;
665                 }
666             }
667         }"
668 }
669
670 print_enabled(){
671     suf=$1
672     shift
673     for v; do
674         enabled $v && printf "%s\n" ${v%$suf}
675     done
676 }
677
678 append(){
679     var=$1
680     shift
681     eval "$var=\"\$$var $*\""
682 }
683
684 prepend(){
685     var=$1
686     shift
687     eval "$var=\"$* \$$var\""
688 }
689
690 unique(){
691     var=$1
692     uniq_list=""
693     for tok in $(eval echo \$$var); do
694         uniq_list="$(filter_out $tok $uniq_list) $tok"
695     done
696     eval "$var=\"${uniq_list}\""
697 }
698
699 resolve(){
700     var=$1
701     tmpvar=
702     for entry in $(eval echo \$$var); do
703         tmpvar="$tmpvar $(eval echo \$${entry})"
704     done
705     eval "$var=\"${tmpvar}\""
706 }
707
708 add_cppflags(){
709     append CPPFLAGS "$@"
710 }
711
712 add_cflags(){
713     append CFLAGS $($cflags_filter "$@")
714 }
715
716 add_cflags_headers(){
717     append CFLAGS_HEADERS $($cflags_filter "$@")
718 }
719
720 add_asflags(){
721     append ASFLAGS $($asflags_filter "$@")
722 }
723
724 add_objcflags(){
725     append OBJCFLAGS $($objcflags_filter "$@")
726 }
727
728 add_ldflags(){
729     append LDFLAGS $($ldflags_filter "$@")
730 }
731
732 add_ldexeflags(){
733     append LDEXEFLAGS $($ldflags_filter "$@")
734 }
735
736 add_ldsoflags(){
737     append LDSOFLAGS $($ldflags_filter "$@")
738 }
739
740 add_stripflags(){
741     append STRIPFLAGS "$@"
742 }
743
744 add_extralibs(){
745     prepend extralibs $($ldflags_filter "$@")
746 }
747
748 add_host_cppflags(){
749     append host_cppflags "$@"
750 }
751
752 add_host_cflags(){
753     append host_cflags $($host_cflags_filter "$@")
754 }
755
756 add_host_ldflags(){
757     append host_ldflags $($host_ldflags_filter "$@")
758 }
759
760 add_compat(){
761     append compat_objs $1
762     shift
763     map 'add_cppflags -D$v' "$@"
764 }
765
766 test_cmd(){
767     log "$@"
768     "$@" >> $logfile 2>&1
769 }
770
771 cc_o(){
772     eval printf '%s\\n' $CC_O
773 }
774
775 cc_e(){
776     eval printf '%s\\n' $CC_E
777 }
778
779 test_cc(){
780     log test_cc "$@"
781     cat > $TMPC
782     log_file $TMPC
783     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
784 }
785
786 test_objcc(){
787     log test_objcc "$@"
788     cat > $TMPC
789     log_file $TMPC
790     test_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
791 }
792
793 test_cpp(){
794     log test_cpp "$@"
795     cat > $TMPC
796     log_file $TMPC
797     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
798 }
799
800 as_o(){
801     eval printf '%s\\n' $AS_O
802 }
803
804 test_as(){
805     log test_as "$@"
806     cat > $TMPS
807     log_file $TMPS
808     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
809 }
810
811 x86asm_o(){
812     eval printf '%s\\n' $X86ASM_O
813 }
814
815 test_x86asm(){
816     log test_x86asm "$@"
817     echo "$1" > $TMPASM
818     log_file $TMPASM
819     shift
820     test_cmd $x86asmexe $X86ASMFLAGS "$@" $(x86asm_o $TMPO) $TMPASM
821 }
822
823 check_cmd(){
824     log check_cmd "$@"
825     cmd=$1
826     disabled $cmd && return
827     disable $cmd
828     test_cmd $@ && enable $cmd
829 }
830
831 check_as(){
832     log check_as "$@"
833     name=$1
834     code=$2
835     shift 2
836     disable $name
837     test_as $@ <<EOF && enable $name
838 $code
839 EOF
840 }
841
842 check_inline_asm(){
843     log check_inline_asm "$@"
844     name="$1"
845     code="$2"
846     shift 2
847     disable $name
848     test_cc "$@" <<EOF && enable $name
849 void foo(void){ __asm__ volatile($code); }
850 EOF
851 }
852
853 check_insn(){
854     log check_insn "$@"
855     check_inline_asm ${1}_inline "$2"
856     check_as ${1}_external "$2"
857 }
858
859 check_x86asm(){
860     log check_x86asm "$@"
861     name=$1
862     shift
863     disable $name
864     test_x86asm "$@" && enable $name
865 }
866
867 ld_o(){
868     eval printf '%s\\n' $LD_O
869 }
870
871 test_ld(){
872     log test_ld "$@"
873     flags=$(filter_out '-l*' "$@")
874     libs=$(filter '-l*' "$@")
875     test_cc $($cflags_filter $flags) || return
876     flags=$($ldflags_filter $flags)
877     libs=$($ldflags_filter $libs)
878     test_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
879 }
880
881 check_ld(){
882     log check_ld "$@"
883     name=$1
884     shift
885     disable $name
886     test_ld $@ && enable $name
887 }
888
889 print_include(){
890     hdr=$1
891     test "${hdr%.h}" = "${hdr}" &&
892         echo "#include $hdr"    ||
893         echo "#include <$hdr>"
894 }
895
896 test_code(){
897     log test_code "$@"
898     check=$1
899     headers=$2
900     code=$3
901     shift 3
902     {
903         for hdr in $headers; do
904             print_include $hdr
905         done
906         echo "int main(void) { $code; return 0; }"
907     } | test_$check "$@"
908 }
909
910 check_cppflags(){
911     log check_cppflags "$@"
912     test_cpp "$@" <<EOF && add_cppflags "$@"
913 #include <stdlib.h>;
914 EOF
915 }
916
917 test_cflags(){
918     log test_cflags "$@"
919     set -- $($cflags_filter "$@")
920     test_cc "$@" <<EOF
921 int x;
922 EOF
923 }
924
925 check_cflags(){
926     log check_cflags "$@"
927     test_cflags "$@" && add_cflags "$@"
928 }
929
930 test_objcflags(){
931     log test_objcflags "$@"
932     set -- $($objcflags_filter "$@")
933     test_objcc "$@" <<EOF
934 int x;
935 EOF
936 }
937
938 check_objcflags(){
939     log check_objcflags "$@"
940     test_objcflags "$@" && add_objcflags "$@"
941 }
942
943 test_ldflags(){
944     log test_ldflags "$@"
945     set -- $($ldflags_filter "$@")
946     test_ld "$@" <<EOF
947 int main(void){ return 0; }
948 EOF
949 }
950
951 check_ldflags(){
952     log check_ldflags "$@"
953     test_ldflags "$@" && add_ldflags "$@"
954 }
955
956 test_stripflags(){
957     log test_stripflags "$@"
958     # call test_cc to get a fresh TMPO
959     test_cc <<EOF
960 int main(void) { return 0; }
961 EOF
962     test_cmd $strip $STRIPFLAGS "$@" $TMPO
963 }
964
965 check_stripflags(){
966     log check_stripflags "$@"
967     test_stripflags "$@" && add_stripflags "$@"
968 }
969
970 check_header(){
971     log check_header "$@"
972     headers=$1
973     shift
974     disable_sanitized $headers
975     {
976         for hdr in $headers; do
977             print_include $hdr
978         done
979         echo "int x;"
980     } | test_cpp "$@" && enable_sanitized $headers
981 }
982
983 check_func(){
984     log check_func "$@"
985     func=$1
986     shift
987     disable $func
988     test_ld "$@" <<EOF && enable $func
989 extern int $func();
990 int main(void){ $func(); }
991 EOF
992 }
993
994 check_mathfunc(){
995     log check_mathfunc "$@"
996     func=$1
997     narg=$2
998     shift 2
999     test $narg = 2 && args="f, g" || args="f"
1000     disable $func
1001     test_ld "$@" <<EOF && enable $func
1002 #include <math.h>
1003 float foo(float f, float g) { return $func($args); }
1004 int main(void){ return 0; }
1005 EOF
1006 }
1007
1008 check_func_headers(){
1009     log check_func_headers "$@"
1010     headers=$1
1011     funcs=$2
1012     shift 2
1013     {
1014         for hdr in $headers; do
1015             print_include $hdr
1016         done
1017         for func in $funcs; do
1018             echo "long check_$func(void) { return (long) $func; }"
1019         done
1020         echo "int main(void) { return 0; }"
1021     } | test_ld "$@" && enable $funcs && enable_sanitized $headers
1022 }
1023
1024 test_cpp_condition(){
1025     log test_cpp_condition "$@"
1026     header=$1
1027     condition=$2
1028     shift 2
1029     test_cpp "$@" <<EOF
1030 #include <$header>
1031 #if !($condition)
1032 #error "unsatisfied condition: $condition"
1033 #endif
1034 EOF
1035 }
1036
1037 check_cpp_condition(){
1038     log check_cpp_condition "$@"
1039     name=$1
1040     shift 1
1041     disable $name
1042     test_cpp_condition "$@" && enable $name
1043 }
1044
1045 test_cflags_cpp(){
1046     log test_cflags_cpp "$@"
1047     flags=$1
1048     condition=$2
1049     shift 2
1050     set -- $($cflags_filter "$flags")
1051     test_cpp "$@" <<EOF
1052 #if !($condition)
1053 #error "unsatisfied condition: $condition"
1054 #endif
1055 EOF
1056 }
1057
1058 check_lib(){
1059     log check_lib "$@"
1060     name="$1"
1061     headers="$2"
1062     funcs="$3"
1063     shift 3
1064     disable $name
1065     check_func_headers "$headers" "$funcs" "$@" &&
1066         enable $name && eval ${name}_extralibs="\$@"
1067 }
1068
1069 test_pkg_config(){
1070     log test_pkg_config "$@"
1071     name="$1"
1072     pkg_version="$2"
1073     pkg="${2%% *}"
1074     headers="$3"
1075     funcs="$4"
1076     shift 4
1077     disable $name
1078     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1079     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1080     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1081     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1082         enable $name &&
1083         set_sanitized "${name}_cflags"    $pkg_cflags &&
1084         set_sanitized "${name}_extralibs" $pkg_libs
1085 }
1086
1087 check_pkg_config(){
1088     log check_pkg_config "$@"
1089     name="$1"
1090     test_pkg_config "$@" &&
1091         eval add_cflags \$${name}_cflags
1092 }
1093
1094 test_exec(){
1095     log test_exec "$@"
1096     test_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1097 }
1098
1099 check_exec_crash(){
1100     log check_exec_crash "$@"
1101     code=$(cat)
1102
1103     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1104     # are safe but may not be available everywhere.  Thus we use
1105     # raise(SIGTERM) instead.  The check is run in a subshell so we
1106     # can redirect the "Terminated" message from the shell.  SIGBUS
1107     # is not defined by standard C so it is used conditionally.
1108
1109     (test_exec "$@") >> $logfile 2>&1 <<EOF
1110 #include <signal.h>
1111 static void sighandler(int sig){
1112     raise(SIGTERM);
1113 }
1114 int foo(void){
1115     $code
1116 }
1117 int (*func_ptr)(void) = foo;
1118 int main(void){
1119     signal(SIGILL, sighandler);
1120     signal(SIGFPE, sighandler);
1121     signal(SIGSEGV, sighandler);
1122 #ifdef SIGBUS
1123     signal(SIGBUS, sighandler);
1124 #endif
1125     return func_ptr();
1126 }
1127 EOF
1128 }
1129
1130 check_type(){
1131     log check_type "$@"
1132     headers=$1
1133     type=$2
1134     shift 2
1135     disable_sanitized "$type"
1136     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1137 }
1138
1139 check_struct(){
1140     log check_struct "$@"
1141     headers=$1
1142     struct=$2
1143     member=$3
1144     shift 3
1145     disable_sanitized "${struct}_${member}"
1146     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1147         enable_sanitized "${struct}_${member}"
1148 }
1149
1150 check_builtin(){
1151     log check_builtin "$@"
1152     name=$1
1153     shift
1154     disable "$name"
1155     test_code ld "$@" && enable "$name"
1156 }
1157
1158 check_compile_assert(){
1159     log check_compile_assert "$@"
1160     name=$1
1161     headers=$2
1162     condition=$3
1163     shift 3
1164     disable "$name"
1165     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1166 }
1167
1168 check_cc(){
1169     log check_cc "$@"
1170     name=$1
1171     shift
1172     disable "$name"
1173     test_code cc "$@" && enable "$name"
1174 }
1175
1176 require(){
1177     log require "$@"
1178     name_version="$1"
1179     name="${1%% *}"
1180     shift
1181     check_lib $name "$@" || die "ERROR: $name_version not found"
1182 }
1183
1184 require_cc(){
1185     log require_cc "$@"
1186     name="$1"
1187     shift
1188     test_code cc "$@" || die "ERROR: $name failed"
1189 }
1190
1191 require_header(){
1192     log require_header "$@"
1193     headers="$1"
1194     check_header "$@" || die "ERROR: $headers not found"
1195 }
1196
1197 require_cpp_condition(){
1198     log require_cpp_condition "$@"
1199     condition="$2"
1200     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1201 }
1202
1203 require_pkg_config(){
1204     log require_pkg_config "$@"
1205     pkg_version="$2"
1206     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1207 }
1208
1209 hostcc_e(){
1210     eval printf '%s\\n' $HOSTCC_E
1211 }
1212
1213 hostcc_o(){
1214     eval printf '%s\\n' $HOSTCC_O
1215 }
1216
1217 test_host_cc(){
1218     log test_host_cc "$@"
1219     cat > $TMPC
1220     log_file $TMPC
1221     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1222 }
1223
1224 test_host_cpp(){
1225     log test_host_cpp "$@"
1226     cat > $TMPC
1227     log_file $TMPC
1228     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1229 }
1230
1231 check_host_cppflags(){
1232     log check_host_cppflags "$@"
1233     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1234 #include <stdlib.h>;
1235 EOF
1236 }
1237
1238 check_host_cflags(){
1239     log check_host_cflags "$@"
1240     set -- $($host_cflags_filter "$@")
1241     test_host_cc "$@" <<EOF && append host_cflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 test_host_cpp_condition(){
1247     log test_host_cpp_condition "$@"
1248     header=$1
1249     condition=$2
1250     shift 2
1251     test_host_cpp "$@" <<EOF
1252 #include <$header>
1253 #if !($condition)
1254 #error "unsatisfied condition: $condition"
1255 #endif
1256 EOF
1257 }
1258
1259 check_host_cpp_condition(){
1260     log check_host_cpp_condition "$@"
1261     name=$1
1262     shift 1
1263     disable $name
1264     test_host_cpp_condition "$@" && enable $name
1265 }
1266
1267 cp_if_changed(){
1268     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1269     mkdir -p "$(dirname $2)"
1270     cp -f "$1" "$2"
1271 }
1272
1273 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1274 # system-dependent things.
1275
1276 AVCODEC_COMPONENTS="
1277     bsfs
1278     decoders
1279     encoders
1280     hwaccels
1281     parsers
1282 "
1283
1284 AVDEVICE_COMPONENTS="
1285     indevs
1286 "
1287 AVFILTER_COMPONENTS="
1288     filters
1289 "
1290 AVFORMAT_COMPONENTS="
1291     demuxers
1292     muxers
1293     protocols
1294 "
1295
1296 COMPONENT_LIST="
1297     $AVCODEC_COMPONENTS
1298     $AVDEVICE_COMPONENTS
1299     $AVFILTER_COMPONENTS
1300     $AVFORMAT_COMPONENTS
1301 "
1302
1303 EXAMPLE_LIST="
1304     decode_audio_example
1305     decode_video_example
1306     encode_audio_example
1307     encode_video_example
1308     filter_audio_example
1309     metadata_example
1310     output_example
1311     qsvdec_example
1312     transcode_aac_example
1313 "
1314
1315 # catchall list of things that require external libs to link
1316 EXTRALIBS_LIST="
1317     cpu_init
1318     cws2fws
1319 "
1320
1321 HWACCEL_LIBRARY_NONFREE_LIST="
1322     cuda
1323     cuvid
1324     libnpp
1325 "
1326 HWACCEL_LIBRARY_LIST="
1327     $HWACCEL_LIBRARY_NONFREE_LIST
1328     amf
1329     d3d11va
1330     dxva2
1331     libmfx
1332     mmal
1333     nvenc
1334     omx
1335     vaapi
1336     vda
1337     vdpau
1338 "
1339
1340 EXTERNAL_LIBRARY_GPL_LIST="
1341     libcdio
1342     libx264
1343     libx265
1344     libxavs
1345     libxvid
1346 "
1347
1348 EXTERNAL_LIBRARY_NONFREE_LIST="
1349     libfaac
1350     libfdk_aac
1351     openssl
1352 "
1353
1354 EXTERNAL_LIBRARY_VERSION3_LIST="
1355     libopencore_amrnb
1356     libopencore_amrwb
1357     libvo_aacenc
1358     libvo_amrwbenc
1359 "
1360
1361 EXTERNAL_LIBRARY_LIST="
1362     $EXTERNAL_LIBRARY_GPL_LIST
1363     $EXTERNAL_LIBRARY_NONFREE_LIST
1364     $EXTERNAL_LIBRARY_VERSION3_LIST
1365     avisynth
1366     avxsynth
1367     frei0r
1368     gnutls
1369     libaom
1370     libbs2b
1371     libdc1394
1372     libdcadec
1373     libfontconfig
1374     libfreetype
1375     libgsm
1376     libhdcd
1377     libilbc
1378     libjack
1379     libkvazaar
1380     libmp3lame
1381     libopencv
1382     libopenh264
1383     libopenjpeg
1384     libopus
1385     libpulse
1386     librtmp
1387     libschroedinger
1388     libsnappy
1389     libspeex
1390     libtheora
1391     libtwolame
1392     libvorbis
1393     libvpx
1394     libwavpack
1395     libwebp
1396     libxcb
1397     libxcb_shm
1398     libxcb_xfixes
1399 "
1400
1401 SYSTEM_LIBRARY_LIST="
1402     bzlib
1403     zlib
1404 "
1405
1406 FEATURE_LIST="
1407     gray
1408     hardcoded_tables
1409     omx_rpi
1410     runtime_cpudetect
1411     safe_bitstream_reader
1412     shared
1413     small
1414     sram
1415     static
1416     swscale_alpha
1417 "
1418
1419 LIBRARY_LIST="
1420     avcodec
1421     avdevice
1422     avfilter
1423     avformat
1424     avresample
1425     avutil
1426     swscale
1427 "
1428
1429 LICENSE_LIST="
1430     gpl
1431     nonfree
1432     version3
1433 "
1434
1435 PROGRAM_LIST="
1436     avconv
1437     avplay
1438     avprobe
1439 "
1440
1441 SUBSYSTEM_LIST="
1442     dct
1443     doc
1444     error_resilience
1445     faan
1446     fft
1447     lsp
1448     lzo
1449     mdct
1450     network
1451     rdft
1452 "
1453
1454 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1455 CONFIG_LIST="
1456     $EXAMPLE_LIST
1457     $EXTERNAL_LIBRARY_LIST
1458     $HWACCEL_LIBRARY_LIST
1459     $FEATURE_LIST
1460     $LICENSE_LIST
1461     $LIBRARY_LIST
1462     $PROGRAM_LIST
1463     $SUBSYSTEM_LIST
1464     $SYSTEM_LIBRARY_LIST
1465     neon_clobber_test
1466     pic
1467     pod2man
1468     texi2html
1469     thumb
1470     valgrind_backtrace
1471     xmm_clobber_test
1472     $COMPONENT_LIST
1473 "
1474
1475 THREADS_LIST="
1476     pthreads
1477     w32threads
1478 "
1479
1480 ATOMICS_LIST="
1481     atomics_gcc
1482     atomics_suncc
1483     atomics_win32
1484 "
1485
1486 ARCH_LIST="
1487     aarch64
1488     alpha
1489     arm
1490     avr32
1491     avr32_ap
1492     avr32_uc
1493     bfin
1494     ia64
1495     m68k
1496     mips
1497     mips64
1498     parisc
1499     ppc
1500     ppc64
1501     s390
1502     sh4
1503     sparc
1504     sparc64
1505     tilegx
1506     tilepro
1507     tomi
1508     x86
1509     x86_32
1510     x86_64
1511 "
1512
1513 ARCH_EXT_LIST_ARM="
1514     armv5te
1515     armv6
1516     armv6t2
1517     armv8
1518     neon
1519     vfp
1520     vfpv3
1521 "
1522
1523 ARCH_EXT_LIST_X86_SIMD="
1524     amd3dnow
1525     amd3dnowext
1526     avx
1527     avx2
1528     fma3
1529     fma4
1530     mmx
1531     mmxext
1532     sse
1533     sse2
1534     sse3
1535     sse4
1536     sse42
1537     ssse3
1538     xop
1539 "
1540
1541 ARCH_EXT_LIST_PPC="
1542     altivec
1543     dcbzl
1544     ldbrx
1545     power8
1546     ppc4xx
1547     vsx
1548 "
1549
1550 ARCH_EXT_LIST_X86="
1551     $ARCH_EXT_LIST_X86_SIMD
1552     cpunop
1553     i686
1554 "
1555
1556 ARCH_EXT_LIST_MIPS="
1557     loongson
1558     mips32r1
1559     mips64r1
1560     mips32r2
1561     mips64r2
1562     mips32r6
1563     mips64r6
1564 "
1565
1566 ARCH_EXT_LIST="
1567     $ARCH_EXT_LIST_ARM
1568     $ARCH_EXT_LIST_MIPS
1569     $ARCH_EXT_LIST_PPC
1570     $ARCH_EXT_LIST_X86
1571     vis
1572 "
1573
1574 ARCH_FEATURES="
1575     aligned_stack
1576     fast_64bit
1577     fast_clz
1578     fast_cmov
1579     local_aligned_8
1580     local_aligned_16
1581     local_aligned_32
1582     simd_align_16
1583     simd_align_32
1584 "
1585
1586 BUILTIN_LIST="
1587     atomic_cas_ptr
1588     machine_rw_barrier
1589     MemoryBarrier
1590     mm_empty
1591     rdtsc
1592     sem_timedwait
1593     sync_val_compare_and_swap
1594 "
1595 HAVE_LIST_CMDLINE="
1596     inline_asm
1597     symver
1598     x86asm
1599 "
1600
1601 HAVE_LIST_PUB="
1602     bigendian
1603     fast_unaligned
1604 "
1605
1606 HEADERS_LIST="
1607     AVFoundation_AVFoundation_h
1608     arpa_inet_h
1609     cdio_paranoia_h
1610     cdio_paranoia_paranoia_h
1611     dispatch_dispatch_h
1612     dev_bktr_ioctl_bt848_h
1613     dev_bktr_ioctl_meteor_h
1614     dev_ic_bt8xx_h
1615     dev_video_bktr_ioctl_bt848_h
1616     dev_video_meteor_ioctl_meteor_h
1617     direct_h
1618     dxgidebug_h
1619     dxva_h
1620     io_h
1621     machine_ioctl_bt848_h
1622     machine_ioctl_meteor_h
1623     malloc_h
1624     poll_h
1625     sys_param_h
1626     sys_resource_h
1627     sys_select_h
1628     sys_soundcard_h
1629     sys_time_h
1630     sys_un_h
1631     sys_videoio_h
1632     unistd_h
1633     valgrind_valgrind_h
1634     windows_h
1635     winsock2_h
1636 "
1637
1638 INTRINSICS_LIST="
1639     intrinsics_neon
1640 "
1641
1642 MATH_FUNCS="
1643     atanf
1644     atan2f
1645     cbrtf
1646     cosf
1647     exp2
1648     exp2f
1649     expf
1650     isinf
1651     isnan
1652     ldexpf
1653     llrint
1654     llrintf
1655     log2
1656     log2f
1657     log10f
1658     lrint
1659     lrintf
1660     powf
1661     rint
1662     round
1663     roundf
1664     sinf
1665     trunc
1666     truncf
1667 "
1668
1669 SYSTEM_FEATURES="
1670     dos_paths
1671     libc_msvcrt
1672     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1673     section_data_rel_ro
1674     threads
1675     uwp
1676 "
1677
1678 SYSTEM_FUNCS="
1679     aligned_malloc
1680     clock_gettime
1681     closesocket
1682     CommandLineToArgvW
1683     fcntl
1684     getaddrinfo
1685     gethrtime
1686     getopt
1687     GetProcessAffinityMask
1688     GetProcessMemoryInfo
1689     GetProcessTimes
1690     getrusage
1691     GetSystemTimeAsFileTime
1692     gettimeofday
1693     gmtime_r
1694     inet_aton
1695     isatty
1696     localtime_r
1697     mach_absolute_time
1698     MapViewOfFile
1699     memalign
1700     mmap
1701     mprotect
1702     nanosleep
1703     posix_memalign
1704     sched_getaffinity
1705     SetConsoleTextAttribute
1706     setmode
1707     setrlimit
1708     Sleep
1709     strerror_r
1710     sysconf
1711     sysctl
1712     usleep
1713     VirtualAlloc
1714 "
1715
1716 SYSTEM_LIBRARIES="
1717     sdl
1718     vaapi_1
1719     vaapi_drm
1720     vaapi_x11
1721     vdpau_x11
1722     wincrypt
1723 "
1724
1725 TOOLCHAIN_FEATURES="
1726     as_arch_directive
1727     as_fpu_directive
1728     as_func
1729     as_object_arch
1730     asm_mod_q
1731     blocks_extension
1732     ebp_available
1733     ebx_available
1734     gnu_as
1735     ibm_asm
1736     inline_asm_labels
1737     pragma_deprecated
1738     symver_asm_label
1739     symver_gnu_asm
1740     vfp_args
1741     xform_asm
1742     xmm_clobbers
1743 "
1744
1745 TYPES_LIST="
1746     CONDITION_VARIABLE_Ptr
1747     CUVIDDECODECREATEINFO_bitDepthMinus8
1748     socklen_t
1749     struct_addrinfo
1750     struct_group_source_req
1751     struct_ip_mreq_source
1752     struct_ipv6_mreq
1753     struct_pollfd
1754     struct_rusage_ru_maxrss
1755     struct_sockaddr_in6
1756     struct_sockaddr_sa_len
1757     struct_sockaddr_storage
1758     struct_v4l2_frmivalenum_discrete
1759 "
1760
1761 HAVE_LIST="
1762     $ARCH_EXT_LIST
1763     $(add_suffix _external $ARCH_EXT_LIST)
1764     $(add_suffix _inline   $ARCH_EXT_LIST)
1765     $ARCH_FEATURES
1766     $BUILTIN_LIST
1767     $HAVE_LIST_CMDLINE
1768     $HAVE_LIST_PUB
1769     $HEADERS_LIST
1770     $INTRINSICS_LIST
1771     $MATH_FUNCS
1772     $SYSTEM_FEATURES
1773     $SYSTEM_FUNCS
1774     $SYSTEM_LIBRARIES
1775     $THREADS_LIST
1776     $TOOLCHAIN_FEATURES
1777     $TYPES_LIST
1778 "
1779
1780 # options emitted with CONFIG_ prefix but not available on the command line
1781 CONFIG_EXTRA="
1782     aandcttables
1783     ac3dsp
1784     adts_header
1785     audio_frame_queue
1786     audiodsp
1787     blockdsp
1788     bswapdsp
1789     cabac
1790     cbs
1791     cbs_h264
1792     cbs_h265
1793     cbs_mpeg2
1794     dirac_parse
1795     dvprofile
1796     faandct
1797     faanidct
1798     fdctdsp
1799     flacdsp
1800     fmtconvert
1801     g722dsp
1802     gmp
1803     golomb
1804     gplv3
1805     h263dsp
1806     h264chroma
1807     h264dsp
1808     h264parse
1809     h264pred
1810     h264qpel
1811     hevcparse
1812     hpeldsp
1813     huffman
1814     huffyuvdsp
1815     huffyuvencdsp
1816     idctdsp
1817     iirfilter
1818     imdct15
1819     intrax8
1820     iso_media
1821     ividsp
1822     jpegtables
1823     lgplv3
1824     libx262
1825     libxcb_shape
1826     lpc
1827     lzf
1828     me_cmp
1829     mpeg_er
1830     mpegaudio
1831     mpegaudiodsp
1832     mpegaudioheader
1833     mpegvideo
1834     mpegvideoenc
1835     mss34dsp
1836     pixblockdsp
1837     qpeldsp
1838     qsv
1839     qsvdec
1840     qsvenc
1841     qsvvpp
1842     rangecoder
1843     riffdec
1844     riffenc
1845     rtpdec
1846     rtpenc_chain
1847     rv34dsp
1848     sinewin
1849     snappy
1850     srtp
1851     startcode
1852     texturedsp
1853     texturedspenc
1854     tpeldsp
1855     vaapi_encode
1856     vc1dsp
1857     videodsp
1858     vp3dsp
1859     vp56dsp
1860     vp8dsp
1861     wma_freqs
1862     wmv2dsp
1863 "
1864
1865 CMDLINE_SELECT="
1866     $ARCH_EXT_LIST
1867     $CONFIG_LIST
1868     $HAVE_LIST_CMDLINE
1869     $THREADS_LIST
1870     asm
1871     cross_compile
1872     debug
1873     extra_warnings
1874     logging
1875     lto
1876     optimizations
1877     rpath
1878 "
1879
1880 PATHS_LIST="
1881     bindir
1882     datadir
1883     docdir
1884     incdir
1885     libdir
1886     mandir
1887     prefix
1888     shlibdir
1889 "
1890
1891 CMDLINE_SET="
1892     $PATHS_LIST
1893     ar
1894     arch
1895     as
1896     cc
1897     objcc
1898     cpu
1899     cross_prefix
1900     custom_allocator
1901     dep_cc
1902     env
1903     extra_version
1904     host_cc
1905     host_cflags
1906     host_extralibs
1907     host_ld
1908     host_ldflags
1909     host_os
1910     ignore_tests
1911     ld
1912     logfile
1913     malloc_prefix
1914     nm
1915     optflags
1916     pkg_config
1917     pkg_config_flags
1918     samples
1919     sysinclude
1920     sysroot
1921     target_exec
1922     target_os
1923     target_path
1924     target_samples
1925     toolchain
1926     x86asmexe
1927 "
1928
1929 CMDLINE_APPEND="
1930     extra_cflags
1931     extra_objcflags
1932     host_cppflags
1933 "
1934
1935 # code dependency declarations
1936
1937 # architecture extensions
1938
1939 armv5te_deps="arm"
1940 armv6_deps="arm"
1941 armv6t2_deps="arm"
1942 armv8_deps="aarch64"
1943 neon_deps_any="aarch64 arm"
1944 intrinsics_neon_deps="neon"
1945 vfp_deps_any="aarch64 arm"
1946 vfpv3_deps="vfp"
1947
1948 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1949
1950 altivec_deps="ppc"
1951 dcbzl_deps="ppc"
1952 ldbrx_deps="ppc"
1953 ppc4xx_deps="ppc"
1954 vsx_deps="altivec"
1955 power8_deps="vsx"
1956
1957 loongson_deps="mips"
1958 mips32r1_deps="mips32"
1959 mips32r2_deps="mips32"
1960 mips32r6_deps="mips32"
1961 mips64r1_deps="mips64"
1962 mips64r2_deps="mips64"
1963 mips64r6_deps="mips64"
1964
1965 vis_deps="sparc"
1966
1967 cpunop_deps="i686"
1968 x86_64_select="i686"
1969 x86_64_suggest="fast_cmov"
1970
1971 amd3dnow_deps="mmx"
1972 amd3dnowext_deps="amd3dnow"
1973 i686_deps="x86"
1974 mmx_deps="x86"
1975 mmxext_deps="mmx"
1976 sse_deps="mmxext"
1977 sse2_deps="sse"
1978 sse3_deps="sse2"
1979 ssse3_deps="sse3"
1980 sse4_deps="ssse3"
1981 sse42_deps="sse4"
1982 avx_deps="sse42"
1983 xop_deps="avx"
1984 fma3_deps="avx"
1985 fma4_deps="avx"
1986 avx2_deps="avx"
1987
1988 mmx_external_deps="x86asm"
1989 mmx_inline_deps="inline_asm x86"
1990 mmx_suggest="mmx_external mmx_inline"
1991
1992 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1993     eval dep=\$${ext}_deps
1994     eval ${ext}_external_deps='"${dep}_external"'
1995     eval ${ext}_inline_deps='"${dep}_inline"'
1996     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1997 done
1998
1999 aligned_stack_if_any="aarch64 ppc x86"
2000 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2001 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2002 fast_unaligned_if_any="aarch64 ppc x86"
2003 simd_align_16_if_any="altivec neon sse"
2004 simd_align_32_if_any="avx"
2005
2006 # system capabilities
2007 symver_if_any="symver_asm_label symver_gnu_asm"
2008 valgrind_backtrace_conflict="optimizations"
2009 valgrind_backtrace_deps="valgrind_valgrind_h"
2010
2011 # threading support
2012 atomics_gcc_if="sync_val_compare_and_swap"
2013 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2014 atomics_win32_if="MemoryBarrier"
2015 atomics_native_if_any="$ATOMICS_LIST"
2016 w32threads_deps="atomics_native"
2017 threads_if_any="$THREADS_LIST"
2018
2019 # subsystems
2020 cbs_h264_select="cbs golomb"
2021 cbs_h265_select="cbs golomb"
2022 cbs_mpeg2_select="cbs"
2023 dct_select="rdft"
2024 dirac_parse_select="golomb"
2025 error_resilience_select="me_cmp"
2026 faandct_deps="faan"
2027 faandct_select="fdctdsp"
2028 faanidct_deps="faan"
2029 faanidct_select="idctdsp"
2030 h264dsp_select="startcode"
2031 hevcparse_select="golomb"
2032 intrax8_select="blockdsp idctdsp"
2033 mdct_select="fft"
2034 rdft_select="fft"
2035 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2036 mpeg_er_select="error_resilience"
2037 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2038 mpegaudiodsp_select="dct"
2039 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2040 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2041 vc1dsp_select="h264chroma qpeldsp startcode"
2042
2043 # decoders / encoders
2044 aac_decoder_select="adts_header imdct15 mdct sinewin"
2045 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2046 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2047 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2048 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2049 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2050 adpcm_g722_decoder_select="g722dsp"
2051 adpcm_g722_encoder_select="g722dsp"
2052 aic_decoder_select="golomb idctdsp"
2053 alac_encoder_select="lpc"
2054 als_decoder_select="bswapdsp"
2055 amrnb_decoder_select="lsp"
2056 amrwb_decoder_select="lsp"
2057 amv_decoder_select="sp5x_decoder"
2058 ape_decoder_select="bswapdsp"
2059 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2060 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2061 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2062 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2063 atrac1_decoder_select="mdct sinewin"
2064 atrac3_decoder_select="mdct"
2065 atrac3p_decoder_select="mdct sinewin"
2066 bink_decoder_select="blockdsp hpeldsp"
2067 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2068 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2069 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2070 clearvideo_decoder_select="idctdsp"
2071 cllc_decoder_select="bswapdsp"
2072 comfortnoise_encoder_select="lpc"
2073 cook_decoder_select="audiodsp mdct sinewin"
2074 cscd_decoder_select="lzo"
2075 cscd_decoder_suggest="zlib"
2076 dca_decoder_select="fmtconvert mdct"
2077 dds_decoder_select="texturedsp"
2078 dnxhd_decoder_select="blockdsp idctdsp"
2079 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2080 dvvideo_decoder_select="dvprofile idctdsp"
2081 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2082 dxa_decoder_deps="zlib"
2083 dxv_decoder_select="lzf texturedsp"
2084 eac3_decoder_select="ac3_decoder"
2085 eac3_encoder_select="ac3_encoder"
2086 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2087 eatgq_decoder_select="aandcttables idctdsp"
2088 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2089 exr_decoder_deps="zlib"
2090 ffv1_decoder_select="rangecoder"
2091 ffv1_encoder_select="rangecoder"
2092 ffvhuff_decoder_select="huffyuv_decoder"
2093 ffvhuff_encoder_select="huffyuv_encoder"
2094 fic_decoder_select="golomb"
2095 flac_decoder_select="flacdsp"
2096 flac_encoder_select="bswapdsp flacdsp lpc"
2097 flashsv_decoder_deps="zlib"
2098 flashsv_encoder_deps="zlib"
2099 flashsv2_decoder_deps="zlib"
2100 flv_decoder_select="h263_decoder"
2101 flv_encoder_select="h263_encoder"
2102 fourxm_decoder_select="blockdsp bswapdsp"
2103 fraps_decoder_select="bswapdsp huffman"
2104 g2m_decoder_deps="zlib"
2105 g2m_decoder_select="blockdsp idctdsp jpegtables"
2106 h261_decoder_select="mpeg_er mpegvideo"
2107 h261_encoder_select="aandcttables mpegvideoenc"
2108 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2109 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2110 h263i_decoder_select="h263_decoder"
2111 h263p_encoder_select="h263_encoder"
2112 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2113 h264_decoder_suggest="error_resilience"
2114 hap_decoder_select="snappy texturedsp"
2115 hap_encoder_deps="libsnappy"
2116 hap_encoder_select="texturedspenc"
2117 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2118 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2119 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2120 iac_decoder_select="imc_decoder"
2121 imc_decoder_select="bswapdsp fft mdct sinewin"
2122 indeo3_decoder_select="hpeldsp"
2123 indeo4_decoder_select="ividsp"
2124 indeo5_decoder_select="ividsp"
2125 interplay_video_decoder_select="hpeldsp"
2126 jpegls_decoder_select="mjpeg_decoder"
2127 jv_decoder_select="blockdsp"
2128 lagarith_decoder_select="huffyuvdsp"
2129 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2130 magicyuv_decoder_select="huffyuvdsp"
2131 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2132 metasound_decoder_select="lsp mdct sinewin"
2133 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2134 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2135 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2136 mjpegb_decoder_select="mjpeg_decoder"
2137 mlp_decoder_select="mlp_parser"
2138 motionpixels_decoder_select="bswapdsp"
2139 mp1_decoder_select="mpegaudio"
2140 mp1float_decoder_select="mpegaudio"
2141 mp2_decoder_select="mpegaudio"
2142 mp2float_decoder_select="mpegaudio"
2143 mp3_decoder_select="mpegaudio"
2144 mp3adu_decoder_select="mpegaudio"
2145 mp3adufloat_decoder_select="mpegaudio"
2146 mp3float_decoder_select="mpegaudio"
2147 mp3on4_decoder_select="mpegaudio"
2148 mp3on4float_decoder_select="mpegaudio"
2149 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2150 mpc8_decoder_select="mpegaudiodsp"
2151 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2152 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2153 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2154 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2155 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2156 mpeg4_encoder_select="h263_encoder"
2157 msa1_decoder_select="mss34dsp"
2158 msmpeg4v1_decoder_select="h263_decoder"
2159 msmpeg4v2_decoder_select="h263_decoder"
2160 msmpeg4v2_encoder_select="h263_encoder"
2161 msmpeg4v3_decoder_select="h263_decoder"
2162 msmpeg4v3_encoder_select="h263_encoder"
2163 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2164 mts2_decoder_select="mss34dsp"
2165 mxpeg_decoder_select="mjpeg_decoder"
2166 nellymoser_decoder_select="mdct sinewin"
2167 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2168 nuv_decoder_select="idctdsp lzo"
2169 on2avc_decoder_select="mdct"
2170 opus_decoder_deps="avresample"
2171 opus_decoder_select="imdct15"
2172 png_decoder_deps="zlib"
2173 png_encoder_deps="zlib"
2174 png_encoder_select="huffyuvencdsp"
2175 prores_decoder_select="idctdsp"
2176 prores_encoder_select="fdctdsp"
2177 qcelp_decoder_select="lsp"
2178 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2179 ra_144_encoder_select="audio_frame_queue lpc"
2180 ralf_decoder_select="golomb"
2181 rscc_decoder_deps="zlib"
2182 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2183 rv10_encoder_select="h263_encoder"
2184 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2185 rv20_encoder_select="h263_encoder"
2186 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2187 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2188 screenpresso_decoder_deps="zlib"
2189 sipr_decoder_select="lsp"
2190 sp5x_decoder_select="mjpeg_decoder"
2191 svq1_decoder_select="hpeldsp"
2192 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2193 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2194 svq3_decoder_suggest="zlib"
2195 tak_decoder_select="audiodsp"
2196 tdsc_decoder_deps="zlib"
2197 tdsc_decoder_select="mjpeg_decoder"
2198 theora_decoder_select="vp3_decoder"
2199 thp_decoder_select="mjpeg_decoder"
2200 tiff_decoder_suggest="zlib"
2201 tiff_encoder_suggest="zlib"
2202 truehd_decoder_select="mlp_decoder"
2203 truemotion2_decoder_select="bswapdsp"
2204 truespeech_decoder_select="bswapdsp"
2205 tscc_decoder_deps="zlib"
2206 txd_decoder_select="texturedsp"
2207 twinvq_decoder_select="mdct lsp sinewin"
2208 utvideo_decoder_select="bswapdsp huffyuvdsp"
2209 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2210 vble_decoder_select="huffyuvdsp"
2211 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2212 vc1image_decoder_select="vc1_decoder"
2213 vorbis_decoder_select="mdct"
2214 vorbis_encoder_select="mdct"
2215 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2216 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2217 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2218 vp6a_decoder_select="vp6_decoder"
2219 vp6f_decoder_select="vp6_decoder"
2220 vp7_decoder_select="h264pred videodsp vp8dsp"
2221 vp8_decoder_select="h264pred videodsp vp8dsp"
2222 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2223 webp_decoder_select="vp8_decoder"
2224 wmapro_decoder_select="mdct sinewin wma_freqs"
2225 wmav1_decoder_select="mdct sinewin wma_freqs"
2226 wmav1_encoder_select="mdct sinewin wma_freqs"
2227 wmav2_decoder_select="mdct sinewin wma_freqs"
2228 wmav2_encoder_select="mdct sinewin wma_freqs"
2229 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2230 wmv1_decoder_select="h263_decoder"
2231 wmv1_encoder_select="h263_encoder"
2232 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2233 wmv2_encoder_select="h263_encoder wmv2dsp"
2234 wmv3_decoder_select="vc1_decoder"
2235 wmv3image_decoder_select="wmv3_decoder"
2236 zerocodec_decoder_deps="zlib"
2237 zlib_decoder_deps="zlib"
2238 zlib_encoder_deps="zlib"
2239 zmbv_decoder_deps="zlib"
2240 zmbv_encoder_deps="zlib"
2241
2242 # hardware accelerators
2243 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2244 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2245 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2246 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2247
2248 h263_vaapi_hwaccel_deps="vaapi"
2249 h263_vaapi_hwaccel_select="h263_decoder"
2250 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2251 h264_cuvid_hwaccel_select="h264_decoder"
2252 h264_d3d11va_hwaccel_deps="d3d11va"
2253 h264_d3d11va_hwaccel_select="h264_decoder"
2254 h264_d3d11va2_hwaccel_deps="d3d11va"
2255 h264_d3d11va2_hwaccel_select="h264_decoder"
2256 h264_dxva2_hwaccel_deps="dxva2"
2257 h264_dxva2_hwaccel_select="h264_decoder"
2258 h264_vaapi_hwaccel_deps="vaapi"
2259 h264_vaapi_hwaccel_select="h264_decoder"
2260 h264_vda_hwaccel_deps="vda"
2261 h264_vda_hwaccel_select="h264_decoder"
2262 h264_vda_old_hwaccel_deps="vda"
2263 h264_vda_old_hwaccel_select="h264_decoder"
2264 h264_vdpau_hwaccel_deps="vdpau"
2265 h264_vdpau_hwaccel_select="h264_decoder"
2266 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2267 hevc_cuvid_hwaccel_select="hevc_decoder"
2268 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2269 hevc_d3d11va_hwaccel_select="hevc_decoder"
2270 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2271 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2272 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2273 hevc_dxva2_hwaccel_select="hevc_decoder"
2274 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2275 hevc_vaapi_hwaccel_select="hevc_decoder"
2276 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2277 hevc_vdpau_hwaccel_select="hevc_decoder"
2278 mpeg1_vdpau_hwaccel_deps="vdpau"
2279 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2280 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2281 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2282 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2283 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2284 mpeg2_dxva2_hwaccel_deps="dxva2"
2285 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2286 mpeg2_vaapi_hwaccel_deps="vaapi"
2287 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2288 mpeg2_vdpau_hwaccel_deps="vdpau"
2289 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2290 mpeg4_vaapi_hwaccel_deps="vaapi"
2291 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2292 mpeg4_vdpau_hwaccel_deps="vdpau"
2293 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2294 vc1_d3d11va_hwaccel_deps="d3d11va"
2295 vc1_d3d11va_hwaccel_select="vc1_decoder"
2296 vc1_d3d11va2_hwaccel_deps="d3d11va"
2297 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2298 vc1_dxva2_hwaccel_deps="dxva2"
2299 vc1_dxva2_hwaccel_select="vc1_decoder"
2300 vc1_vaapi_hwaccel_deps="vaapi"
2301 vc1_vaapi_hwaccel_select="vc1_decoder"
2302 vc1_vdpau_hwaccel_deps="vdpau"
2303 vc1_vdpau_hwaccel_select="vc1_decoder"
2304 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2305 vp8_vaapi_hwaccel_select="vp8_decoder"
2306 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2307 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2308 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2309 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2310 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2311
2312 # hardware-accelerated codecs
2313 amf_deps_any="libdl LoadLibrary"
2314 nvenc_deps_any="libdl LoadLibrary"
2315 omx_deps="libdl pthreads"
2316 omx_rpi_select="omx"
2317 qsv_deps="libmfx"
2318 qsvdec_select="qsv"
2319 qsvenc_select="qsv"
2320 qsvvpp_select="qsv"
2321 vaapi_encode_deps="vaapi"
2322
2323 hwupload_cuda_filter_deps="cuda"
2324 scale_npp_filter_deps="cuda libnpp"
2325
2326 h264_amf_encoder_deps="amf"
2327 h264_mmal_decoder_deps="mmal"
2328 h264_nvenc_encoder_deps="nvenc"
2329 h264_omx_encoder_deps="omx"
2330 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2331 h264_qsv_encoder_select="qsvenc"
2332 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2333 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2334 hevc_amf_encoder_deps="amf"
2335 hevc_nvenc_encoder_deps="nvenc"
2336 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2337 hevc_qsv_encoder_select="hevcparse qsvenc"
2338 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2339 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2340 mjpeg_qsv_encoder_deps="libmfx"
2341 mjpeg_qsv_encoder_select="qsvenc"
2342 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2343 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2344 mpeg2_mmal_decoder_deps="mmal"
2345 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2346 mpeg2_qsv_encoder_select="qsvenc"
2347 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2348 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2349 mpeg4_omx_encoder_deps="omx"
2350 vc1_mmal_decoder_deps="mmal"
2351 vc1_qsv_decoder_select="qsvdec vc1_parser"
2352 vp8_qsv_decoder_select="qsvdec vp8_parser"
2353 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2354 vp8_vaapi_encoder_select="vaapi_encode"
2355 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2356 vp9_vaapi_encoder_select="vaapi_encode"
2357
2358 nvenc_h264_encoder_select="h264_nvenc_encoder"
2359 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2360
2361 # parsers
2362 aac_parser_select="adts_header"
2363 h264_parser_select="golomb h264dsp h264parse"
2364 hevc_parser_select="hevcparse"
2365 mpegaudio_parser_select="mpegaudioheader"
2366 mpegvideo_parser_select="mpegvideo"
2367 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2368 vc1_parser_select="vc1dsp"
2369
2370 # bitstream_filters
2371 aac_adtstoasc_bsf_select="adts_header"
2372 h264_metadata_bsf_select="cbs_h264"
2373 h264_redundant_pps_bsf_select="cbs_h264"
2374 hevc_metadata_bsf_select="cbs_h265"
2375 mjpeg2jpeg_bsf_select="jpegtables"
2376 mpeg2_metadata_bsf_select="cbs_mpeg2"
2377 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2378
2379 # external libraries
2380 avisynth_deps="LoadLibrary"
2381 avxsynth_deps="libdl"
2382 avisynth_demuxer_deps_any="avisynth avxsynth"
2383 avisynth_demuxer_select="riffdec"
2384 libaom_av1_decoder_deps="libaom"
2385 libaom_av1_encoder_deps="libaom"
2386 libdcadec_decoder_deps="libdcadec"
2387 libfaac_encoder_deps="libfaac"
2388 libfaac_encoder_select="audio_frame_queue"
2389 libfdk_aac_decoder_deps="libfdk_aac"
2390 libfdk_aac_encoder_deps="libfdk_aac"
2391 libfdk_aac_encoder_select="audio_frame_queue"
2392 libgsm_decoder_deps="libgsm"
2393 libgsm_encoder_deps="libgsm"
2394 libgsm_ms_decoder_deps="libgsm"
2395 libgsm_ms_encoder_deps="libgsm"
2396 libilbc_decoder_deps="libilbc"
2397 libilbc_encoder_deps="libilbc"
2398 libkvazaar_encoder_deps="libkvazaar"
2399 libmp3lame_encoder_deps="libmp3lame"
2400 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2401 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2402 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2403 libopencore_amrnb_encoder_select="audio_frame_queue"
2404 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2405 libopenh264_decoder_deps="libopenh264"
2406 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2407 libopenh264_encoder_deps="libopenh264"
2408 libopenjpeg_decoder_deps="libopenjpeg"
2409 libopenjpeg_encoder_deps="libopenjpeg"
2410 libopus_decoder_deps="libopus"
2411 libopus_encoder_deps="libopus"
2412 libopus_encoder_select="audio_frame_queue"
2413 libschroedinger_decoder_deps="libschroedinger"
2414 libschroedinger_encoder_deps="libschroedinger"
2415 libspeex_decoder_deps="libspeex"
2416 libspeex_encoder_deps="libspeex"
2417 libspeex_encoder_select="audio_frame_queue"
2418 libtheora_encoder_deps="libtheora"
2419 libtwolame_encoder_deps="libtwolame"
2420 libvo_aacenc_encoder_deps="libvo_aacenc"
2421 libvo_aacenc_encoder_select="audio_frame_queue"
2422 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2423 libvorbis_encoder_deps="libvorbis"
2424 libvorbis_encoder_select="audio_frame_queue"
2425 libvpx_vp8_decoder_deps="libvpx"
2426 libvpx_vp8_encoder_deps="libvpx"
2427 libvpx_vp9_decoder_deps="libvpx"
2428 libvpx_vp9_encoder_deps="libvpx"
2429 libwavpack_encoder_deps="libwavpack"
2430 libwavpack_encoder_select="audio_frame_queue"
2431 libwebp_encoder_deps="libwebp"
2432 libx262_encoder_deps="libx262"
2433 libx264_encoder_deps="libx264"
2434 libx265_encoder_deps="libx265"
2435 libxavs_encoder_deps="libxavs"
2436 libxvid_encoder_deps="libxvid mkstemp"
2437
2438 # demuxers / muxers
2439 ac3_demuxer_select="ac3_parser"
2440 asf_demuxer_select="riffdec"
2441 asf_muxer_select="riffenc"
2442 asf_stream_muxer_select="asf_muxer"
2443 avi_demuxer_select="iso_media riffdec"
2444 avi_muxer_select="riffenc"
2445 caf_demuxer_select="iso_media riffdec"
2446 dash_muxer_select="mp4_muxer"
2447 dirac_demuxer_select="dirac_parser"
2448 dv_demuxer_select="dvprofile"
2449 dv_muxer_select="dvprofile"
2450 dxa_demuxer_select="riffdec"
2451 eac3_demuxer_select="ac3_parser"
2452 f4v_muxer_select="mov_muxer"
2453 flac_demuxer_select="flac_parser"
2454 hds_muxer_select="flv_muxer"
2455 hls_muxer_select="mpegts_muxer"
2456 ipod_muxer_select="mov_muxer"
2457 ismv_muxer_select="mov_muxer"
2458 matroska_audio_muxer_select="matroska_muxer"
2459 matroska_demuxer_select="iso_media riffdec"
2460 matroska_demuxer_suggest="bzlib lzo zlib"
2461 matroska_muxer_select="iso_media riffenc"
2462 mmf_muxer_select="riffenc"
2463 mov_demuxer_select="iso_media riffdec"
2464 mov_demuxer_suggest="zlib"
2465 mov_muxer_select="iso_media riffenc rtpenc_chain"
2466 mp3_demuxer_select="mpegaudio_parser"
2467 mp3_muxer_select="mpegaudioheader"
2468 mp4_muxer_select="mov_muxer"
2469 mpegts_demuxer_select="iso_media"
2470 mpegts_muxer_select="adts_muxer latm_muxer"
2471 mpegtsraw_demuxer_select="mpegts_demuxer"
2472 mxf_d10_muxer_select="mxf_muxer"
2473 nut_muxer_select="riffenc"
2474 nuv_demuxer_select="riffdec"
2475 oga_muxer_select="ogg_muxer"
2476 ogg_demuxer_select="dirac_parse"
2477 opus_muxer_select="ogg_muxer"
2478 psp_muxer_select="mov_muxer"
2479 rtp_demuxer_select="sdp_demuxer"
2480 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2481 rtsp_demuxer_select="http_protocol rtpdec"
2482 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2483 sap_demuxer_select="sdp_demuxer"
2484 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2485 sdp_demuxer_select="rtpdec"
2486 smoothstreaming_muxer_select="ismv_muxer"
2487 spdif_demuxer_select="adts_header"
2488 spdif_muxer_select="adts_header"
2489 spx_muxer_select="ogg_muxer"
2490 swf_demuxer_suggest="zlib"
2491 tak_demuxer_select="tak_parser"
2492 tg2_muxer_select="mov_muxer"
2493 tgp_muxer_select="mov_muxer"
2494 w64_demuxer_select="wav_demuxer"
2495 wav_demuxer_select="riffdec"
2496 wav_muxer_select="riffenc"
2497 webm_muxer_select="iso_media riffenc"
2498 wtv_demuxer_select="mpegts_demuxer riffdec"
2499 xmv_demuxer_select="riffdec"
2500 xwma_demuxer_select="riffdec"
2501
2502 # indevs
2503 alsa_indev_deps="alsa"
2504 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2505 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2506 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2507 fbdev_indev_deps="linux_fb_h"
2508 jack_indev_deps="libjack"
2509 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2510 libcdio_indev_deps="libcdio"
2511 libdc1394_indev_deps="libdc1394"
2512 oss_indev_deps_any="sys_soundcard_h"
2513 pulse_indev_deps="libpulse"
2514 sndio_indev_deps="sndio"
2515 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2516 vfwcap_indev_deps="vfw32 vfwcap_defines"
2517 xcbgrab_indev_deps="libxcb libxcb_shape"
2518 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2519
2520 # protocols
2521 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2522 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2523 ffrtmpcrypt_protocol_select="tcp_protocol"
2524 ffrtmphttp_protocol_conflict="librtmp_protocol"
2525 ffrtmphttp_protocol_select="http_protocol"
2526 gopher_protocol_select="network"
2527 http_protocol_select="tcp_protocol"
2528 http_protocol_suggest="zlib"
2529 httpproxy_protocol_select="tcp_protocol"
2530 httpproxy_protocol_suggest="zlib"
2531 https_protocol_select="tls_protocol"
2532 https_protocol_suggest="zlib"
2533 icecast_protocol_select="http_protocol"
2534 librtmp_protocol_deps="librtmp"
2535 librtmpe_protocol_deps="librtmp"
2536 librtmps_protocol_deps="librtmp"
2537 librtmpt_protocol_deps="librtmp"
2538 librtmpte_protocol_deps="librtmp"
2539 mmsh_protocol_select="http_protocol"
2540 mmst_protocol_select="network"
2541 rtmp_protocol_conflict="librtmp_protocol"
2542 rtmp_protocol_select="tcp_protocol"
2543 rtmp_protocol_suggest="zlib"
2544 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2545 rtmpe_protocol_suggest="zlib"
2546 rtmps_protocol_conflict="librtmp_protocol"
2547 rtmps_protocol_select="tls_protocol"
2548 rtmps_protocol_suggest="zlib"
2549 rtmpt_protocol_select="ffrtmphttp_protocol"
2550 rtmpt_protocol_suggest="zlib"
2551 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2552 rtmpte_protocol_suggest="zlib"
2553 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2554 rtmpts_protocol_suggest="zlib"
2555 rtp_protocol_select="udp_protocol"
2556 sctp_protocol_deps="struct_sctp_event_subscribe"
2557 sctp_protocol_select="network"
2558 srtp_protocol_select="rtp_protocol srtp"
2559 tcp_protocol_select="network"
2560 tls_protocol_deps_any="gnutls openssl"
2561 tls_protocol_select="tcp_protocol"
2562 udp_protocol_select="network"
2563 unix_protocol_deps="sys_un_h"
2564 unix_protocol_select="network"
2565
2566 # filters
2567 asyncts_filter_deps="avresample"
2568 blackframe_filter_deps="gpl"
2569 boxblur_filter_deps="gpl"
2570 bs2b_filter_deps="libbs2b"
2571 cropdetect_filter_deps="gpl"
2572 deinterlace_qsv_filter_deps="libmfx"
2573 deinterlace_vaapi_filter_deps="vaapi"
2574 delogo_filter_deps="gpl"
2575 drawtext_filter_deps="libfreetype"
2576 drawtext_filter_suggest="libfontconfig"
2577 frei0r_filter_deps="frei0r libdl"
2578 frei0r_src_filter_deps="frei0r libdl"
2579 hdcd_filter_deps="libhdcd"
2580 hqdn3d_filter_deps="gpl"
2581 interlace_filter_deps="gpl"
2582 movie_filter_deps="avcodec avformat"
2583 ocv_filter_deps="libopencv"
2584 overlay_qsv_filter_deps="libmfx"
2585 overlay_qsv_filter_select="qsvvpp"
2586 resample_filter_deps="avresample"
2587 scale_filter_deps="swscale"
2588 scale_qsv_filter_deps="libmfx"
2589 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2590 vpp_qsv_filter_deps="libmfx"
2591 vpp_qsv_filter_select="qsvvpp"
2592
2593 # examples
2594 decode_audio_example_deps="avcodec avutil"
2595 decode_video_example_deps="avcodec avutil"
2596 encode_audio_example_deps="avcodec avutil"
2597 encode_video_example_deps="avcodec avutil"
2598 filter_audio_example_deps="avfilter avutil"
2599 metadata_example_deps="avformat avutil"
2600 output_example_deps="avcodec avformat avresample avutil swscale"
2601 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2602 transcode_aac_example_deps="avcodec avformat avresample"
2603
2604 # EXTRALIBS_LIST
2605 cpu_init_extralibs="pthreads_extralibs"
2606 cws2fws_extralibs="zlib_extralibs"
2607
2608 # libraries, in linking order
2609 avcodec_deps="avutil"
2610 avcodec_select="null_bsf"
2611 avdevice_deps="avformat avcodec avutil"
2612 avfilter_deps="avutil"
2613 avformat_deps="avcodec avutil"
2614 avformat_suggest="network"
2615 avresample_deps="avutil"
2616 swscale_deps="avutil"
2617
2618 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2619 avdevice_extralibs="libm_extralibs"
2620 avformat_extralibs="libm_extralibs"
2621 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2622 avresample_extralibs="libm_extralibs"
2623 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2624 swscale_extralibs="libm_extralibs"
2625
2626 # programs
2627 avconv_deps="avcodec avfilter avformat avresample swscale"
2628 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2629                fps_filter null_filter resample_filter scale_filter
2630                trim_filter"
2631 avconv_suggest="psapi shell32"
2632 avplay_deps="avcodec avfilter avformat avresample sdl"
2633 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2634 avplay_suggest="shell32"
2635 avprobe_deps="avcodec avformat"
2636 avprobe_suggest="shell32"
2637
2638 # documentation
2639 pod2man_deps="doc"
2640 texi2html_deps="doc"
2641
2642 # default parameters
2643
2644 logfile="avbuild/config.log"
2645
2646 # installation paths
2647 prefix_default="/usr/local"
2648 bindir_default='${prefix}/bin'
2649 datadir_default='${prefix}/share/avconv'
2650 docdir_default='${prefix}/share/doc/libav'
2651 incdir_default='${prefix}/include'
2652 libdir_default='${prefix}/lib'
2653 mandir_default='${prefix}/share/man'
2654 shlibdir_default="$libdir_default"
2655
2656 # toolchain
2657 ar_default="ar"
2658 cc_default="gcc"
2659 host_cc_default="gcc"
2660 x86asmexe_default="nasm"
2661 ln_s="ln -s -f"
2662 nm_default="nm -g"
2663 pkg_config_default=pkg-config
2664 ranlib="ranlib"
2665 strip="strip"
2666 version_script='--version-script'
2667 objformat="elf32"
2668
2669 # machine
2670 arch_default=$(uname -m)
2671 cpu="generic"
2672 intrinsics="none"
2673
2674 # OS
2675 target_os_default=$(tolower $(uname -s))
2676 host_os=$target_os_default
2677
2678 # configurable options
2679 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2680
2681 enable asm
2682 enable debug
2683 enable doc
2684 enable faan faandct faanidct
2685 enable optimizations
2686 enable safe_bitstream_reader
2687 enable static
2688 enable swscale_alpha
2689 enable valgrind_backtrace
2690
2691 # By default, enable only those hwaccels that have no external dependencies.
2692 enable d3d11va dxva2 vda vdpau
2693
2694 # internal components are enabled by default
2695 enable $EXTRALIBS_LIST
2696
2697 # Avoid external, non-system, libraries getting enabled by dependency resolution
2698 disable $EXTERNAL_LIBRARY_LIST
2699
2700 # build settings
2701 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2702 LIBPREF="lib"
2703 LIBSUF=".a"
2704 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2705 SLIBPREF="lib"
2706 SLIBSUF=".so"
2707 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2708 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2709 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2710 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2711 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2712 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2713 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2714
2715 asflags_filter=echo
2716 cflags_filter=echo
2717 ldflags_filter=echo
2718
2719 AS_C='-c'
2720 AS_O='-o $@'
2721 CC_C='-c'
2722 CC_E='-E -o $@'
2723 CC_O='-o $@'
2724 OBJCC_C='-c'
2725 OBJCC_E='-E -o $@'
2726 OBJCC_O='-o $@'
2727 X86ASM_O='-o $@'
2728 LD_O='-o $@'
2729 LD_LIB='-l%'
2730 LD_PATH='-L'
2731 HOSTCC_C='-c'
2732 HOSTCC_E='-E -o $@'
2733 HOSTCC_O='-o $@'
2734 HOSTLD_O='-o $@'
2735
2736 host_extralibs='-lm'
2737 host_cflags_filter=echo
2738 host_ldflags_filter=echo
2739
2740 target_path='$(CURDIR)'
2741
2742 # since the object filename is not given with the -MM flag, the compiler
2743 # is only able to print the basename, and we must add the path ourselves
2744 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2745 DEPFLAGS='-MM'
2746
2747 mkdir -p avbuild
2748
2749 # find source path
2750 if test -f configure; then
2751     source_path=.
2752 else
2753     source_path=$(cd $(dirname "$0"); pwd)
2754     echo "$source_path" | grep -q '[[:blank:]]' &&
2755         die "Out of tree builds are impossible with whitespace in source path."
2756     test -e "$source_path/config.h" &&
2757         die "Out of tree builds are impossible with config.h in source dir."
2758 fi
2759
2760 for v in "$@"; do
2761     r=${v#*=}
2762     l=${v%"$r"}
2763     r=$(sh_quote "$r")
2764     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2765 done
2766
2767 find_things(){
2768     thing=$1
2769     pattern=$2
2770     file=$source_path/$3
2771     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2772 }
2773
2774 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2775 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2776 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2777 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2778 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2779 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2780 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2781
2782 find_things_extern(){
2783     thing=$1
2784     pattern=$2
2785     file=$source_path/$3
2786     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2787 }
2788
2789 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2790 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2791 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2792
2793 AVCODEC_COMPONENTS_LIST="
2794     $BSF_LIST
2795     $DECODER_LIST
2796     $ENCODER_LIST
2797     $HWACCEL_LIST
2798     $PARSER_LIST
2799 "
2800
2801 AVDEVICE_COMPONENTS_LIST="
2802     $INDEV_LIST
2803 "
2804
2805 AVFILTER_COMPONENTS_LIST="
2806     $FILTER_LIST
2807 "
2808
2809 AVFORMAT_COMPONENTS_LIST="
2810     $DEMUXER_LIST
2811     $MUXER_LIST
2812     $PROTOCOL_LIST
2813 "
2814
2815 ALL_COMPONENTS="
2816     $AVCODEC_COMPONENTS_LIST
2817     $AVDEVICE_COMPONENTS_LIST
2818     $AVFILTER_COMPONENTS_LIST
2819     $AVFORMAT_COMPONENTS_LIST
2820 "
2821
2822 for n in $COMPONENT_LIST; do
2823     v=$(toupper ${n%s})_LIST
2824     eval enable \$$v
2825     eval ${n}_if_any="\$$v"
2826 done
2827
2828 enable $ARCH_EXT_LIST
2829
2830 die_unknown(){
2831     echo "Unknown option \"$1\"."
2832     echo "See $0 --help for available options."
2833     exit 1
2834 }
2835
2836 print_3_columns() {
2837     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2838 }
2839
2840 show_list() {
2841     suffix=_$1
2842     shift
2843     echo $* | sed s/$suffix//g | print_3_columns
2844     exit 0
2845 }
2846
2847 for opt do
2848     optval="${opt#*=}"
2849     case "$opt" in
2850         --extra-ldflags=*)
2851             add_ldflags $optval
2852         ;;
2853         --extra-ldexeflags=*)
2854             add_ldexeflags $optval
2855         ;;
2856         --extra-ldsoflags=*)
2857             add_ldsoflags $optval
2858         ;;
2859         --extra-libs=*)
2860             add_extralibs $optval
2861         ;;
2862         --disable-devices)
2863             disable $INDEV_LIST
2864         ;;
2865         --enable-debug=*)
2866             debuglevel="$optval"
2867         ;;
2868         --disable-programs)
2869             disable $PROGRAM_LIST
2870         ;;
2871         --disable-everything)
2872             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2873         ;;
2874         --disable-all)
2875             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2876             disable $LIBRARY_LIST $PROGRAM_LIST doc
2877         ;;
2878         --enable-*=*|--disable-*=*)
2879             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2880             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2881             eval list=\$$(toupper $thing)_LIST
2882             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2883             $action $(filter "$name" $list)
2884         ;;
2885         --enable-yasm|--disable-yasm)
2886             warn "The ${opt} option is only provided for compatibility and will be\n"\
2887                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2888             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2889         ;;
2890         --enable-?*|--disable-?*)
2891             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2892             if is_in $option $COMPONENT_LIST; then
2893                 test $action = disable && action=unset
2894                 eval $action \$$(toupper ${option%s})_LIST
2895             elif is_in $option $CMDLINE_SELECT; then
2896                 $action $option
2897             else
2898                 die_unknown $opt
2899             fi
2900         ;;
2901         --list-*)
2902             NAME="${opt#--list-}"
2903             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2904             NAME=${NAME%s}
2905             eval show_list $NAME \$$(toupper $NAME)_LIST
2906         ;;
2907         --help|-h) show_help
2908         ;;
2909         --quiet|-q) quiet=yes
2910         ;;
2911         *)
2912             optname="${opt%%=*}"
2913             optname="${optname#--}"
2914             optname=$(echo "$optname" | sed 's/-/_/g')
2915             if is_in $optname $CMDLINE_SET; then
2916                 eval $optname='$optval'
2917             elif is_in $optname $CMDLINE_APPEND; then
2918                 append $optname "$optval"
2919             else
2920                 die_unknown $opt
2921             fi
2922         ;;
2923     esac
2924 done
2925
2926 for e in $env; do
2927     eval "export $e"
2928 done
2929
2930 disabled logging && logfile=/dev/null
2931
2932 # command line configuration sanity checks
2933
2934 # we need to build at least one lib type
2935 if ! enabled_any static shared; then
2936     cat <<EOF
2937 At least one library type must be built.
2938 Specify --enable-static to build the static libraries or --enable-shared to
2939 build the shared libraries as well. To only build the shared libraries specify
2940 --disable-static in addition to --enable-shared.
2941 EOF
2942     exit 1
2943 fi
2944
2945 # Die early if licensing-related configure options are incompatible.
2946 die_license_disabled() {
2947     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2948 }
2949
2950 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2951 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2952 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2953
2954 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2955
2956 if enabled nonfree; then
2957     license="nonfree and unredistributable"
2958 elif enabled gplv3; then
2959     license="GPL version 3 or later"
2960 elif enabled lgplv3; then
2961     license="LGPL version 3 or later"
2962 elif enabled gpl; then
2963     license="GPL version 2 or later"
2964 else
2965     license="LGPL version 2.1 or later"
2966 fi
2967
2968 enabled_all gnutls openssl &&
2969     die "GnuTLS and OpenSSL must not be enabled at the same time."
2970
2971 # Disable all the library-specific components if the library itself
2972 # is disabled, see AVCODEC_LIST and following _LIST variables.
2973
2974 disable_components(){
2975     disabled ${1} && disable $(
2976         eval components="\$$(toupper ${1})_COMPONENTS"
2977         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2978     )
2979 }
2980
2981 map 'disable_components $v' $LIBRARY_LIST
2982
2983 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2984 set >> $logfile
2985
2986 case "$toolchain" in
2987     *-asan)
2988         cc_default="${toolchain%-asan}"
2989         add_cflags  -fsanitize=address
2990         add_ldflags -fsanitize=address
2991     ;;
2992     *-msan)
2993         cc_default="${toolchain%-msan}"
2994         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2995         add_ldflags -fsanitize=memory
2996     ;;
2997     *-tsan)
2998         cc_default="${toolchain%-tsan}"
2999         add_cflags  -fsanitize=thread -fPIE
3000         add_ldflags -fsanitize=thread -pie
3001         case "$toolchain" in
3002             gcc-tsan)
3003                 add_cflags  -fPIC
3004                 add_ldflags -fPIC
3005                 ;;
3006         esac
3007     ;;
3008     *-usan)
3009         cc_default="${toolchain%-usan}"
3010         add_cflags  -fsanitize=undefined
3011         add_ldflags -fsanitize=undefined
3012         case "$toolchain" in
3013             clang-usan)
3014                 add_cflags -O1
3015                 ;;
3016         esac
3017     ;;
3018     valgrind-*)
3019         target_exec_default="valgrind"
3020         case "$toolchain" in
3021             valgrind-massif)
3022                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3023                 ;;
3024             valgrind-memcheck)
3025                 target_exec_args="--track-origins=yes --leak-check=full"
3026                 ;;
3027         esac
3028     ;;
3029     msvc)
3030         # Check whether the current MSVC version needs the C99 converter.
3031         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3032         # support enough of C99 to build libav. Default to the new
3033         # behaviour if the regexp was unable to match anything, since this
3034         # successfully parses the version number of existing supported
3035         # versions that require the converter (MSVC 2010 and 2012).
3036         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3037         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3038             cc_default="cl"
3039         else
3040             cc_default="c99wrap cl"
3041         fi
3042         ld_default="$source_path/compat/windows/mslink"
3043         nm_default="dumpbin -symbols"
3044         ar_default="lib"
3045         case "$arch" in
3046         aarch64|arm64)
3047             as_default="armasm64"
3048             ;;
3049         arm*)
3050             as_default="armasm"
3051             ;;
3052         esac
3053         target_os_default="win32"
3054         # Use a relative path for TMPDIR. This makes sure all the
3055         # ffconf temp files are written with a relative path, avoiding
3056         # issues with msys/win32 path conversion for MSVC parameters
3057         # such as -Fo<file> or -out:<file>.
3058         TMPDIR=.
3059     ;;
3060     icl)
3061         cc_default="icl"
3062         ld_default="xilink"
3063         nm_default="dumpbin -symbols"
3064         ar_default="xilib"
3065         target_os_default="win32"
3066         TMPDIR=.
3067     ;;
3068     gcov)
3069         add_cflags  -fprofile-arcs -ftest-coverage
3070         add_ldflags -fprofile-arcs -ftest-coverage
3071     ;;
3072     llvm-cov)
3073         add_cflags -fprofile-arcs -ftest-coverage
3074         add_ldflags --coverage
3075     ;;
3076     hardened)
3077         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3078         add_cflags   -fno-strict-overflow -fstack-protector-all
3079         add_ldflags  -Wl,-z,relro -Wl,-z,now
3080     ;;
3081     ?*)
3082         die "Unknown toolchain $toolchain"
3083     ;;
3084 esac
3085
3086 if test -n "$cross_prefix"; then
3087     test -n "$arch" && test -n "$target_os" ||
3088         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3089     enable cross_compile
3090 fi
3091
3092 ar_default="${cross_prefix}${ar_default}"
3093 cc_default="${cross_prefix}${cc_default}"
3094 objcc_default="${cross_prefix}${objcc_default}"
3095 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3096 nm_default="${cross_prefix}${nm_default}"
3097 pkg_config_default="${cross_prefix}${pkg_config_default}"
3098 ranlib="${cross_prefix}${ranlib}"
3099 strip="${cross_prefix}${strip}"
3100
3101 sysinclude_default="${sysroot}/usr/include"
3102
3103 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3104 enabled cross_compile || host_cc_default=$cc
3105 set_default host_cc
3106
3107 if ! $pkg_config --version >/dev/null 2>&1; then
3108     warn "$pkg_config not found, library detection may fail."
3109     pkg_config=false
3110 fi
3111
3112 exesuf() {
3113     case $1 in
3114         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3115     esac
3116 }
3117
3118 EXESUF=$(exesuf $target_os)
3119 HOSTEXESUF=$(exesuf $host_os)
3120
3121 # set temporary file name
3122 : ${TMPDIR:=$TEMPDIR}
3123 : ${TMPDIR:=$TMP}
3124 : ${TMPDIR:=/tmp}
3125
3126 if ! test_cmd mktemp -u XXXXXX; then
3127     # simple replacement for missing mktemp
3128     # NOT SAFE FOR GENERAL USE
3129     mktemp(){
3130         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3131         echo "$tmpname"
3132         mkdir "$tmpname"
3133     }
3134 fi
3135
3136 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3137     die "Unable to create temporary directory in $TMPDIR."
3138
3139 tmpfile(){
3140     tmp="${AVTMPDIR}/test"$2
3141     (set -C; exec > $tmp) 2> /dev/null ||
3142         die "Unable to create temporary file in $AVTMPDIR."
3143     eval $1=$tmp
3144 }
3145
3146 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3147 trap 'exit 2' INT
3148
3149 tmpfile TMPASM .asm
3150 tmpfile TMPC   .c
3151 tmpfile TMPE   $EXESUF
3152 tmpfile TMPH   .h
3153 tmpfile TMPO   .o
3154 tmpfile TMPS   .S
3155 tmpfile TMPSH  .sh
3156 tmpfile TMPV   .ver
3157
3158 unset -f mktemp
3159
3160 chmod +x $TMPE
3161
3162 # make sure we can execute files in $TMPDIR
3163 cat > $TMPSH 2>> $logfile <<EOF
3164 #! /bin/sh
3165 EOF
3166 chmod +x $TMPSH >> $logfile 2>&1
3167 if ! $TMPSH >> $logfile 2>&1; then
3168     cat <<EOF
3169 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3170 variable to another directory and make sure that it is not mounted noexec.
3171 EOF
3172     die "Sanity test failed."
3173 fi
3174
3175 armasm_flags(){
3176     for flag; do
3177         case $flag in
3178             # Filter out MSVC cl.exe options from cflags that shouldn't
3179             # be passed to gas-preprocessor
3180             -M[TD]*)                                            ;;
3181             *)                  echo $flag                      ;;
3182         esac
3183    done
3184 }
3185
3186 cparser_flags(){
3187     for flag; do
3188         case $flag in
3189             -Wno-switch)             echo -Wno-switch-enum ;;
3190             -Wno-format-zero-length) ;;
3191             -Wdisabled-optimization) ;;
3192             -Wno-pointer-sign)       echo -Wno-other ;;
3193             *)                       echo $flag ;;
3194         esac
3195     done
3196 }
3197
3198 msvc_common_flags(){
3199     for flag; do
3200         case $flag in
3201             # In addition to specifying certain flags under the compiler
3202             # specific filters, they must be specified here as well or else the
3203             # generic catch all at the bottom will print the original flag.
3204             -Wall)                ;;
3205             -Wextra)              ;;
3206             -std=c99)             ;;
3207             # Common flags
3208             -fomit-frame-pointer) ;;
3209             -g)                   echo -Z7 ;;
3210             -fno-math-errno)      ;;
3211             -fno-common)          ;;
3212             -fno-signed-zeros)    ;;
3213             -fPIC)                ;;
3214             -mthumb)              ;;
3215             -march=*)             ;;
3216             -lz)                  echo zlib.lib ;;
3217             -lx264)               echo libx264.lib ;;
3218             -l*)                  echo ${flag#-l}.lib ;;
3219             -L*)                  echo -libpath:${flag#-L} ;;
3220             *)                    echo $flag ;;
3221         esac
3222     done
3223 }
3224
3225 msvc_flags(){
3226     msvc_common_flags "$@"
3227     for flag; do
3228         case $flag in
3229             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3230                                        -wd4554 ;;
3231             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3232                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3233                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3234                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3235         esac
3236     done
3237 }
3238
3239 icl_flags(){
3240     msvc_common_flags "$@"
3241     for flag; do
3242         case $flag in
3243             # Despite what Intel's documentation says -Wall, which is supported
3244             # on Windows, does enable remarks so disable them here.
3245             -Wall)                echo $flag -Qdiag-disable:remark ;;
3246             -std=c99)             echo -Qstd=c99 ;;
3247         esac
3248     done
3249 }
3250
3251 suncc_flags(){
3252     for flag; do
3253         case $flag in
3254             -march=*|-mcpu=*)
3255                 case "${flag#*=}" in
3256                     native)                   echo -xtarget=native       ;;
3257                     v9|niagara)               echo -xarch=sparc          ;;
3258                     ultrasparc)               echo -xarch=sparcvis       ;;
3259                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3260                     i586|pentium)             echo -xchip=pentium        ;;
3261                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3262                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3263                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3264                     pentium4*)          echo -xtarget=pentium4           ;;
3265                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3266                     *-sse3)             echo -xarch=sse3                 ;;
3267                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3268                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3269                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3270                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3271                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3272                     k8|opteron|athlon64|athlon-fx)
3273                                                echo -xarch=sse2a         ;;
3274                     athlon*)                   echo -xarch=pentium_proa  ;;
3275                 esac
3276                 ;;
3277             -std=c99)             echo -xc99              ;;
3278             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3279             -fPIC)                echo -KPIC -xcode=pic32 ;;
3280             -W*,*)                echo $flag              ;;
3281             -f*-*|-W*|-mimpure-text)                      ;;
3282             -shared)              echo -G                 ;;
3283             *)                    echo $flag              ;;
3284         esac
3285     done
3286 }
3287
3288 probe_cc(){
3289     pfx=$1
3290     _cc=$2
3291
3292     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3293     unset _ld_o _ldflags _ld_lib _ld_path
3294     unset _depflags _DEPCMD _DEPFLAGS
3295     _flags_filter=echo
3296
3297     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3298         _type=llvm_gcc
3299         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3300         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3301         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3302         _cflags_speed='-O3'
3303         _cflags_size='-Os'
3304     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3305         _type=gcc
3306         gcc_version=$($_cc --version | head -n1)
3307         gcc_basever=$($_cc -dumpversion)
3308         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3309         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3310         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3311         if ! $_cc -dumpversion | grep -q '^2\.'; then
3312             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3313         fi
3314         _cflags_speed='-O3'
3315         _cflags_size='-Os'
3316     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3317         _type=icc
3318         _ident=$($_cc --version | head -n1)
3319         _depflags='-MMD'
3320         _cflags_speed='-O3'
3321         _cflags_size='-Os'
3322         _cflags_noopt='-O1'
3323     elif $_cc -v 2>&1 | grep -q xlc; then
3324         _type=xlc
3325         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3326         _cflags_speed='-O5'
3327         _cflags_size='-O5 -qcompact'
3328     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3329         test -d "$sysroot" || die "No valid sysroot specified."
3330         _type=armcc
3331         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3332         armcc_conf="$PWD/armcc.conf"
3333         $_cc --arm_linux_configure                 \
3334              --arm_linux_config_file="$armcc_conf" \
3335              --configure_sysroot="$sysroot"        \
3336              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3337              die "Error creating armcc configuration file."
3338         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3339         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3340         as_default="${cross_prefix}gcc"
3341         _depflags='-MMD'
3342         _cflags_speed='-O3'
3343         _cflags_size='-Os'
3344     elif $_cc -v 2>&1 | grep -q clang; then
3345         _type=clang
3346         _ident=$($_cc --version 2>/dev/null | head -n1)
3347         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3348         _cflags_speed='-O3'
3349         _cflags_size='-Os'
3350     elif $_cc -V 2>&1 | grep -q Sun; then
3351         _type=suncc
3352         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3353         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3354         _DEPFLAGS='-xM1 -xc99'
3355         _ldflags='-std=c99'
3356         _cflags_speed='-O5'
3357         _cflags_size='-O5 -xspace'
3358         _flags_filter=suncc_flags
3359     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3360         _type=pathscale
3361         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3362         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3363         _cflags_speed='-O2'
3364         _cflags_size='-Os'
3365         _flags_filter='filter_out -Wdisabled-optimization'
3366     elif $_cc -v 2>&1 | grep -q Open64; then
3367         _type=open64
3368         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3369         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3370         _cflags_speed='-O2'
3371         _cflags_size='-Os'
3372         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3373     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3374         _type=armasm
3375         _ident=$($_cc | head -n1)
3376         # 4509: "This form of conditional instruction is deprecated"
3377         _flags="-nologo -ignore 4509"
3378         _flags_filter=armasm_flags
3379     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3380         _type=msvc
3381         _ident=$($_cc 2>&1 | head -n1)
3382         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3383         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3384         _cflags_speed="-O2"
3385         _cflags_size="-O1"
3386         _cflags_noopt="-O1"
3387         if $_cc -nologo- 2>&1 | grep -q Linker; then
3388             _ld_o='-out:$@'
3389         else
3390             _ld_o='-Fe$@'
3391         fi
3392         _cc_o='-Fo$@'
3393         _cc_e='-P -Fi$@'
3394         _flags_filter=msvc_flags
3395         _ld_lib='lib%.a'
3396         _ld_path='-libpath:'
3397         _flags='-nologo'
3398     elif $_cc 2>&1 | grep -q Intel; then
3399         _type=icl
3400         _ident=$($_cc 2>&1 | head -n1)
3401         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3402         # Not only is O3 broken on 13.x+ but it is slower on all previous
3403         # versions (tested) as well.
3404         _cflags_speed="-O2"
3405         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3406         if $_cc 2>&1 | grep -q Linker; then
3407             _ld_o='-out:$@'
3408         else
3409             _ld_o='-Fe$@'
3410         fi
3411         _cc_o='-Fo$@'
3412         _cc_e='-P'
3413         _flags_filter=icl_flags
3414         _ld_lib='lib%.a'
3415         _ld_path='-libpath:'
3416         # -Qdiag-error to make icl error when seeing certain unknown arguments
3417         _flags='-nologo -Qdiag-error:4044,10157'
3418         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3419         # with MSVC which enables it by default.
3420         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3421     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3422         # lld can emulate multiple different linkers; in ms link.exe mode,
3423         # the -? parameter gives the help output which contains an identifyable
3424         # string, while it gives an error in other modes.
3425         _type=lld-link
3426         # The link.exe mode doesn't have a switch for getting the version,
3427         # but we can force it back to gnu mode and get the version from there.
3428         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3429         _ld_o='-out:$@'
3430         _flags_filter=msvc_flags
3431         _ld_lib='lib%.a'
3432         _ld_path='-libpath:'
3433     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3434         _type=cparser
3435         _ident=$($_cc --version | head -n1)
3436         _depflags='-MMD'
3437         _cflags_speed='-O4'
3438         _cflags_size='-O2'
3439         _flags_filter=cparser_flags
3440     fi
3441
3442     eval ${pfx}_type=\$_type
3443     eval ${pfx}_ident=\$_ident
3444 }
3445
3446 set_ccvars(){
3447     eval ${1}_C=\${_cc_c-\${${1}_C}}
3448     eval ${1}_E=\${_cc_e-\${${1}_E}}
3449     eval ${1}_O=\${_cc_o-\${${1}_O}}
3450
3451     if [ -n "$_depflags" ]; then
3452         eval ${1}_DEPFLAGS=\$_depflags
3453     else
3454         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3455         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3456         eval DEP${1}FLAGS=\$_flags
3457     fi
3458 }
3459
3460 probe_cc cc "$cc"
3461 cflags_filter=$_flags_filter
3462 cflags_speed=$_cflags_speed
3463 cflags_size=$_cflags_size
3464 cflags_noopt=$_cflags_noopt
3465 add_cflags $_flags $_cflags
3466 cc_ldflags=$_ldflags
3467 set_ccvars CC
3468
3469 probe_cc hostcc "$host_cc"
3470 host_cflags_filter=$_flags_filter
3471 host_cflags_speed=$_cflags_speed
3472 add_host_cflags  $_flags $_cflags
3473 set_ccvars HOSTCC
3474
3475 test -n "$cc_type" && enable $cc_type ||
3476     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3477
3478 : ${as_default:=$cc}
3479 : ${objcc_default:=$cc}
3480 : ${dep_cc_default:=$cc}
3481 : ${ld_default:=$cc}
3482 : ${host_ld_default:=$host_cc}
3483 set_default ar as objcc dep_cc ld host_ld
3484
3485 probe_cc as "$as"
3486 asflags_filter=$_flags_filter
3487 add_asflags $_flags $_cflags
3488 set_ccvars AS
3489
3490 probe_cc objcc "$objcc"
3491 objcflags_filter=$_flags_filter
3492 add_objcflags $_flags $_cflags
3493 set_ccvars OBJC
3494
3495 probe_cc ld "$ld"
3496 ldflags_filter=$_flags_filter
3497 add_ldflags $_flags $_ldflags
3498 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3499 LD_O=${_ld_o-$LD_O}
3500 LD_LIB=${_ld_lib-$LD_LIB}
3501 LD_PATH=${_ld_path-$LD_PATH}
3502
3503 probe_cc hostld "$host_ld"
3504 host_ldflags_filter=$_flags_filter
3505 add_host_ldflags $_flags $_ldflags
3506 HOSTLD_O=${_ld_o-$HOSTLD_O}
3507
3508 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3509     probe_cc depcc "$dep_cc"
3510     CCDEP=${_DEPCMD:-$DEPCMD}
3511     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3512     DEPCCFLAGS=$_flags
3513 fi
3514
3515 if $ar 2>&1 | grep -q Microsoft; then
3516     arflags="-nologo"
3517     ar_o='-out:$@'
3518 else
3519     arflags="rc"
3520     ar_o='$@'
3521 fi
3522
3523 add_cflags $extra_cflags
3524 add_objcflags $extra_objcflags
3525 add_asflags $extra_cflags
3526
3527 if test -n "$sysroot"; then
3528     case "$cc_type" in
3529         gcc|llvm_gcc|clang)
3530             add_cppflags --sysroot="$sysroot"
3531             add_ldflags --sysroot="$sysroot"
3532         ;;
3533     esac
3534 fi
3535
3536 if test "$cpu" = host; then
3537     enabled cross_compile &&
3538         die "--cpu=host makes no sense when cross-compiling."
3539
3540     case "$cc_type" in
3541         gcc|llvm_gcc)
3542             check_native(){
3543                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3544                 sed -n "/cc1.*$1=/{
3545                             s/.*$1=\\([^ ]*\\).*/\\1/
3546                             p
3547                             q
3548                         }" $TMPE
3549             }
3550             cpu=$(check_native -march || check_native -mcpu)
3551         ;;
3552     esac
3553
3554     test "${cpu:-host}" = host &&
3555         die "--cpu=host not supported with compiler $cc"
3556 fi
3557
3558 # Deal with common $arch aliases
3559 case "$arch" in
3560     aarch64|arm64)
3561         arch="aarch64"
3562     ;;
3563     arm*)
3564         arch="arm"
3565     ;;
3566     mips*|IP*)
3567         case "$arch" in
3568         *el)
3569             add_cppflags -EL
3570             add_ldflags -EL
3571         ;;
3572         *eb)
3573             add_cppflags -EB
3574             add_ldflags -EB
3575         ;;
3576         esac
3577         arch="mips"
3578     ;;
3579     parisc*|hppa*)
3580         arch="parisc"
3581     ;;
3582     "Power Macintosh"|ppc*|powerpc*)
3583         arch="ppc"
3584     ;;
3585     s390|s390x)
3586         arch="s390"
3587     ;;
3588     sh4|sh)
3589         arch="sh4"
3590     ;;
3591     sun4u|sparc*)
3592         arch="sparc"
3593     ;;
3594     tilegx|tile-gx)
3595         arch="tilegx"
3596     ;;
3597     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3598         arch="x86"
3599     ;;
3600 esac
3601
3602 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3603 enable $arch
3604
3605 # Add processor-specific flags
3606 if enabled aarch64; then
3607
3608     case $cpu in
3609         armv*)
3610             cpuflags="-march=$cpu"
3611         ;;
3612         *)
3613             cpuflags="-mcpu=$cpu"
3614         ;;
3615     esac
3616
3617 elif enabled alpha; then
3618
3619     cpuflags="-mcpu=$cpu"
3620
3621 elif enabled arm; then
3622
3623     check_arm_arch() {
3624         test_cpp_condition stddef.h \
3625             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3626             $cpuflags
3627     }
3628
3629     probe_arm_arch() {
3630         if   check_arm_arch 4;        then echo armv4
3631         elif check_arm_arch 4T;       then echo armv4t
3632         elif check_arm_arch 5;        then echo armv5
3633         elif check_arm_arch 5E;       then echo armv5e
3634         elif check_arm_arch 5T;       then echo armv5t
3635         elif check_arm_arch 5TE;      then echo armv5te
3636         elif check_arm_arch 5TEJ;     then echo armv5te
3637         elif check_arm_arch 6;        then echo armv6
3638         elif check_arm_arch 6J;       then echo armv6j
3639         elif check_arm_arch 6K;       then echo armv6k
3640         elif check_arm_arch 6Z;       then echo armv6z
3641         elif check_arm_arch 6ZK;      then echo armv6zk
3642         elif check_arm_arch 6T2;      then echo armv6t2
3643         elif check_arm_arch 7;        then echo armv7
3644         elif check_arm_arch 7A  7_A;  then echo armv7-a
3645         elif check_arm_arch 7S;       then echo armv7-a
3646         elif check_arm_arch 7R  7_R;  then echo armv7-r
3647         elif check_arm_arch 7M  7_M;  then echo armv7-m
3648         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3649         elif check_arm_arch 8A  8_A;  then echo armv8-a
3650         fi
3651     }
3652
3653     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3654
3655     case $cpu in
3656         armv*)
3657             cpuflags="-march=$cpu"
3658             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3659         ;;
3660         *)
3661             cpuflags="-mcpu=$cpu"
3662             case $cpu in
3663                 cortex-a*)                               subarch=armv7a  ;;
3664                 cortex-r*)                               subarch=armv7r  ;;
3665                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3666                 arm11*)                                  subarch=armv6   ;;
3667                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3668                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3669                 *)                             subarch=$(probe_arm_arch) ;;
3670             esac
3671         ;;
3672     esac
3673
3674     case "$subarch" in
3675         armv5t*)    enable fast_clz                ;;
3676         armv[6-8]*) enable fast_clz fast_unaligned ;;
3677     esac
3678
3679 elif enabled avr32; then
3680
3681     case $cpu in
3682         ap7[02]0[0-2])
3683             subarch="avr32_ap"
3684             cpuflags="-mpart=$cpu"
3685         ;;
3686         ap)
3687             subarch="avr32_ap"
3688             cpuflags="-march=$cpu"
3689         ;;
3690         uc3[ab]*)
3691             subarch="avr32_uc"
3692             cpuflags="-mcpu=$cpu"
3693         ;;
3694         uc)
3695             subarch="avr32_uc"
3696             cpuflags="-march=$cpu"
3697         ;;
3698     esac
3699
3700 elif enabled bfin; then
3701
3702     cpuflags="-mcpu=$cpu"
3703
3704 elif enabled mips; then
3705
3706     cpuflags="-march=$cpu"
3707
3708 elif enabled ppc; then
3709
3710     disable ldbrx
3711
3712     case $(tolower $cpu) in
3713         601|ppc601|powerpc601)
3714             cpuflags="-mcpu=601"
3715             disable altivec
3716         ;;
3717         603*|ppc603*|powerpc603*)
3718             cpuflags="-mcpu=603"
3719             disable altivec
3720         ;;
3721         604*|ppc604*|powerpc604*)
3722             cpuflags="-mcpu=604"
3723             disable altivec
3724         ;;
3725         g3|75*|ppc75*|powerpc75*)
3726             cpuflags="-mcpu=750"
3727             disable altivec
3728         ;;
3729         g4|745*|ppc745*|powerpc745*)
3730             cpuflags="-mcpu=7450"
3731             disable vsx
3732         ;;
3733         74*|ppc74*|powerpc74*)
3734             cpuflags="-mcpu=7400"
3735             disable vsx
3736         ;;
3737         g5|970|ppc970|powerpc970)
3738             cpuflags="-mcpu=970"
3739             disable vsx
3740         ;;
3741         power[3-6]*)
3742             cpuflags="-mcpu=$cpu"
3743             disable vsx
3744         ;;
3745         power[7-8]*)
3746             cpuflags="-mcpu=$cpu"
3747             enable ldbrx
3748         ;;
3749         cell)
3750             cpuflags="-mcpu=cell"
3751             enable ldbrx
3752             disable vsx
3753         ;;
3754         e500mc)
3755             cpuflags="-mcpu=e500mc"
3756             disable altivec
3757         ;;
3758         e500v2)
3759             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3760             disable altivec
3761             disable dcbzl
3762         ;;
3763         e500)
3764             cpuflags="-mcpu=8540 -mhard-float"
3765             disable altivec
3766             disable dcbzl
3767         ;;
3768     esac
3769
3770 elif enabled sparc; then
3771
3772     case $cpu in
3773         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3774             cpuflags="-mcpu=$cpu"
3775         ;;
3776         ultrasparc*|niagara[234])
3777             cpuflags="-mcpu=$cpu"
3778         ;;
3779     esac
3780
3781 elif enabled x86; then
3782
3783     case $cpu in
3784         i[345]86|pentium)
3785             cpuflags="-march=$cpu"
3786             disable i686
3787             disable mmx
3788         ;;
3789         # targets that do NOT support nopl and conditional mov (cmov)
3790         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3791             cpuflags="-march=$cpu"
3792             disable i686
3793         ;;
3794         # targets that do support nopl and conditional mov (cmov)
3795         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3796             cpuflags="-march=$cpu"
3797             enable i686
3798             enable fast_cmov
3799         ;;
3800         # targets that do support conditional mov but on which it's slow
3801         pentium4|pentium4m|prescott|nocona)
3802             cpuflags="-march=$cpu"
3803             enable i686
3804             disable fast_cmov
3805         ;;
3806     esac
3807
3808 fi
3809
3810 if [ "$cpu" != generic ]; then
3811     add_cflags  $cpuflags
3812     add_asflags $cpuflags
3813     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3814 fi
3815
3816 # compiler sanity check
3817 test_exec <<EOF
3818 int main(void){ return 0; }
3819 EOF
3820 if test "$?" != 0; then
3821     echo "$cc is unable to create an executable file."
3822     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3823         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3824         echo "Only do this if you know what cross compiling means."
3825     fi
3826     die "C compiler test failed."
3827 fi
3828
3829 add_cppflags -D_ISOC99_SOURCE
3830
3831 # some compilers silently accept -std=c11, so we also need to check that the
3832 # version macro is defined properly
3833 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3834     add_cflags -std=c11 ||
3835     check_cflags -std=c99
3836
3837 check_cppflags -D_FILE_OFFSET_BITS=64
3838 check_cppflags -D_LARGEFILE_SOURCE
3839
3840 add_host_cppflags -D_ISOC99_SOURCE
3841 check_host_cflags -std=c99
3842 check_host_cflags -Wall
3843 check_host_cflags $host_cflags_speed
3844
3845 check_64bit(){
3846     arch32=$1
3847     arch64=$2
3848     expr=${3:-'sizeof(void *) > 4'}
3849     test_code cc "" "int test[2*($expr) - 1]" &&
3850         subarch=$arch64 || subarch=$arch32
3851     enable $subarch
3852 }
3853
3854 case "$arch" in
3855     aarch64|alpha|ia64)
3856         enabled shared && enable_weak pic
3857     ;;
3858     mips)
3859         check_64bit mips mips64 '_MIPS_SIM > 1'
3860         enabled shared && enable_weak pic
3861     ;;
3862     parisc)
3863         check_64bit parisc parisc64
3864         enabled shared && enable_weak pic
3865     ;;
3866     ppc)
3867         check_64bit ppc ppc64
3868         enabled shared && enable_weak pic
3869     ;;
3870     s390)
3871         check_64bit s390 s390x
3872         enabled shared && enable_weak pic
3873     ;;
3874     sparc)
3875         check_64bit sparc sparc64
3876         enabled shared && enable_weak pic
3877     ;;
3878     x86)
3879         check_64bit x86_32 x86_64
3880         if enabled x86_64; then
3881             enabled shared && enable_weak pic
3882             objformat=elf64
3883         fi
3884     ;;
3885 esac
3886
3887 # OS specific
3888 case $target_os in
3889     aix)
3890         SHFLAGS=-shared
3891         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3892         enabled shared && add_ldflags -Wl,-brtl
3893         arflags='-Xany -r -c'
3894         ;;
3895     android)
3896         disable symver
3897         enable section_data_rel_ro
3898         SLIB_INSTALL_NAME='$(SLIBNAME)'
3899         SLIB_INSTALL_LINKS=
3900         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3901         ;;
3902     haiku)
3903         prefix_default="/boot/common"
3904         network_extralibs="-lnetwork"
3905         host_extralibs=
3906         ;;
3907     sunos)
3908         SHFLAGS='-shared -Wl,-h,$$(@F)'
3909         enabled x86 && append SHFLAGS -mimpure-text
3910         network_extralibs="-lsocket -lnsl"
3911         # When using suncc to build, the Solaris linker will mark
3912         # an executable with each instruction set encountered by
3913         # the Solaris assembler.  As our libraries contain their own
3914         # guards for processor-specific code, instead suppress
3915         # generation of the HWCAPS ELF section on Solaris x86 only.
3916         enabled_all suncc x86 &&
3917             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3918             add_ldflags -Wl,-M,mapfile
3919         nm_default='nm -P -g'
3920         version_script='-M'
3921         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3922         ;;
3923     netbsd)
3924         disable symver
3925         oss_indev_extralibs="-lossaudio"
3926         ;;
3927     openbsd|bitrig)
3928         disable symver
3929         SHFLAGS='-shared'
3930         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3931         SLIB_INSTALL_LINKS=
3932         oss_indev_extralibs="-lossaudio"
3933         ;;
3934     dragonfly)
3935         disable symver
3936         ;;
3937     freebsd)
3938         ;;
3939     bsd/os)
3940         add_extralibs -lpoll -lgnugetopt
3941         ;;
3942     darwin)
3943         enabled ppc && add_asflags -force_cpusubtype_ALL
3944         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3945         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3946         add_ldflags -Wl,-dynamic,-search_paths_first
3947         check_cflags -Werror=partial-availability
3948         SLIBSUF=".dylib"
3949         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3950         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3951         enabled x86_64 && objformat="macho64" || objformat="macho32"
3952         enabled_any pic shared ||
3953             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3954         check_header dispatch/dispatch.h &&
3955             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3956         if test -n "$sysroot"; then
3957             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3958             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3959         fi
3960         ;;
3961     msys*)
3962         die "Native MSYS builds are discouraged, please use the MINGW environment."
3963         ;;
3964     mingw32*|mingw64*)
3965         target_os=mingw32
3966         LIBTARGET=i386
3967         if enabled x86_64; then
3968             LIBTARGET="i386:x86-64"
3969         elif enabled arm; then
3970             LIBTARGET="arm"
3971         elif enabled aarch64; then
3972             LIBTARGET="arm64"
3973         fi
3974         if enabled shared; then
3975             # Cannot build both shared and static libs when using dllimport.
3976             disable static
3977         fi
3978         check_ldflags -Wl,--nxcompat
3979         check_ldflags -Wl,--dynamicbase
3980         shlibdir_default="$bindir_default"
3981         SLIBPREF=""
3982         SLIBSUF=".dll"
3983         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3984         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3985         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3986         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3987         SLIB_INSTALL_LINKS=
3988         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3989         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3990         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3991         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3992         enabled x86_64 && objformat="win64" || objformat="win32"
3993         dlltool="${cross_prefix}dlltool"
3994         ranlib=:
3995         enable dos_paths
3996         ;;
3997     win32|win64)
3998         disable symver
3999         if enabled shared; then
4000             # Link to the import library instead of the normal static library
4001             # for shared libs.
4002             LD_LIB='%.lib'
4003             # Cannot build both shared and static libs with MSVC or icl.
4004             disable static
4005         fi
4006         shlibdir_default="$bindir_default"
4007         SLIBPREF=""
4008         SLIBSUF=".dll"
4009         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4010         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4011         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4012         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4013         SLIB_INSTALL_LINKS=
4014         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4015         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4016         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4017         enabled x86_64 && objformat="win64" || objformat="win32"
4018         ranlib=:
4019         enable dos_paths
4020         ;;
4021     cygwin*)
4022         target_os=cygwin
4023         shlibdir_default="$bindir_default"
4024         SLIBPREF="cyg"
4025         SLIBSUF=".dll"
4026         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4027         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4028         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4029         SLIB_INSTALL_LINKS=
4030         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4031         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4032         enabled x86_64 && objformat="win64" || objformat="win32"
4033         enable dos_paths
4034         ;;
4035     *-dos|freedos|opendos)
4036         network_extralibs="-lsocket"
4037         objformat="coff"
4038         enable dos_paths
4039         add_cppflags -U__STRICT_ANSI__
4040         ;;
4041     linux)
4042         enable section_data_rel_ro
4043         ;;
4044     irix*)
4045         target_os=irix
4046         ranlib="echo ignoring ranlib"
4047         ;;
4048     os/2*)
4049         ln_s="cp -f"
4050         objformat="aout"
4051         add_cppflags -D_GNU_SOURCE
4052         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4053         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4054         LIBSUF="_s.a"
4055         SLIBPREF=""
4056         SLIBSUF=".dll"
4057         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4058         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4059         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4060             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4061             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4062             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4063             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4064         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4065             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4066         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4067         enable dos_paths
4068         ;;
4069     gnu/kfreebsd)
4070         add_cppflags -D_BSD_SOURCE
4071         ;;
4072     gnu)
4073         ;;
4074     qnx)
4075         add_cppflags -D_QNX_SOURCE
4076         network_extralibs="-lsocket"
4077         ;;
4078     symbian)
4079         SLIBSUF=".dll"
4080         enable dos_paths
4081         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4082         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4083         add_ldflags -Wl,--target1-abs,--no-undefined \
4084                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4085                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4086         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4087                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4088                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4089         ;;
4090     minix)
4091         ;;
4092     none)
4093         ;;
4094     *)
4095         die "Unknown OS '$target_os'."
4096         ;;
4097 esac
4098
4099 # determine libc flavour
4100
4101 probe_libc(){
4102     pfx=$1
4103     pfx_no_=${pfx%_}
4104     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4105     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4106         eval ${pfx}libc_type=uclibc
4107         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4108     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4109         eval ${pfx}libc_type=glibc
4110         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4111     # MinGW headers can be installed on Cygwin, so check for newlib first.
4112     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4113         eval ${pfx}libc_type=newlib
4114         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4115     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4116     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4117         eval ${pfx}libc_type=mingw64
4118         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4119         eval test \$${pfx_no_}cc_type = "gcc" &&
4120             add_${pfx}cppflags -D__printf__=__gnu_printf__
4121     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4122          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4123         eval ${pfx}libc_type=mingw32
4124         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4125             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4126             die "ERROR: MinGW32 runtime version must be >= 3.15."
4127         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4128         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&