ppc: Drop support for Apple GCC
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libjack           JACK audio sound server
207   --enable-libkvazaar        HEVC video encoding
208   --enable-libmp3lame        MP3 audio encoding
209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
210   --enable-libopencore-amrwb AMR-WB audio decoding
211   --enable-libopencv         computer vision
212   --enable-libopenh264       H.264 video encoding/decoding
213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
214   --enable-libopus           Opus audio encoding/decoding
215   --enable-libpulse          Pulseaudio sound server
216   --enable-librtmp           RTMP streaming
217   --enable-libschroedinger   Dirac video encoding/decoding
218   --enable-libsnappy         snappy compression
219   --enable-libspeex          Speex audio encoding/decoding
220   --enable-libtheora         Theora video encoding/decoding
221   --enable-libtwolame        MP2 audio encoding
222   --enable-libvo-aacenc      AAC audio encoding
223   --enable-libvo-amrwbenc    AMR-WB audio encoding
224   --enable-libvorbis         Vorbis audio encoding/decoding
225   --enable-libvpx            VP* video encoding/decoding
226   --enable-libwavpack        Wavpack audio encoding/decoding
227   --enable-libwebp           WebP image encoding/decoding
228   --enable-libx264           H.264 video encoding
229   --enable-libx265           HEVC video encoding
230   --enable-libxavs           Chinese AVS video encoding
231   --enable-libxcb            X window system protocol communication
232   --enable-libxcb-shm        X11 shm communication [auto]
233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
234   --enable-libxvid           MPEG-4 ASP video encoding
235   --enable-openssl           crypto
236   --enable-zlib              compression [autodetect]
237
238   The following libraries provide various hardware acceleration features:
239   --enable-cuda    Nvidia CUDA (dynamically linked)
240   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
241   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
242   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
243   --enable-libnpp  Nvidia CUDA processing
244   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
245   --enable-nvenc   Nvidia video encoding
246   --enable-omx     OpenMAX IL
247   --enable-omx-rpi OpenMAX IL for Raspberry Pi
248   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
249   --enable-vda     Apple Video Decode Acceleration [auto]
250   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
251
252 Toolchain options:
253   --arch=ARCH              select architecture [$arch]
254   --cpu=CPU                select the minimum required CPU (affects
255                            instruction selection, may crash on older CPUs)
256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
257   --enable-cross-compile   assume a cross-compiler is used
258   --sysroot=PATH           root of cross-build tree
259   --sysinclude=PATH        location of cross-build system headers
260   --target-os=OS           compiler targets OS [$target_os]
261   --target-exec=CMD        command to run executables on target
262   --target-path=DIR        path to view of build directory on target
263   --target-samples=DIR     path to samples directory on target
264   --toolchain=NAME         set tool defaults according to NAME
265   --nm=NM                  use nm tool
266   --ar=AR                  use archive tool AR [$ar_default]
267   --as=AS                  use assembler AS [$as_default]
268   --cc=CC                  use C compiler CC [$cc_default]
269   --objcc=OCC              use ObjC compiler OCC [$cc_default]
270   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
271   --ld=LD                  use linker LD
272   --x86asmexe=X86ASM       use x86 assembler X86ASM
273   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
274   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
275   --host-cc=HOSTCC         use host C compiler HOSTCC
276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
278   --host-ld=HOSTLD         use host linker HOSTLD
279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
280   --host-libs=HLIBS        use libs HLIBS when linking for host
281   --host-os=OS             compiler host OS [$target_os]
282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
283   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
285   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
286   --extra-libs=ELIBS       add ELIBS [$ELIBS]
287   --extra-version=STRING   version string suffix []
288   --optflags=OPTFLAGS      override optimization-related compiler flags
289   --enable-pic             build position-independent code
290   --enable-thumb           compile for Thumb instruction set
291   --enable-lto             use link-time optimization
292   --env="ENV=override"     override the environment variables
293
294 Advanced options (experts only):
295   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
296   --custom-allocator=NAME  use a supported custom allocator
297   --disable-symver         disable symbol versioning
298   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
299   --disable-safe-bitstream-reader
300                            disable buffer boundary checking in bitreaders
301                            (faster, but may crash)
302   --enable-sram            allow use of on-chip SRAM
303
304 Optimization options (experts only):
305   --disable-asm            disable all assembly optimizations
306   --disable-altivec        disable AltiVec optimizations
307   --disable-vsx            disable VSX optimizations
308   --disable-power8         disable POWER8 optimizations
309   --disable-amd3dnow       disable 3DNow! optimizations
310   --disable-amd3dnowext    disable 3DNow! extended optimizations
311   --disable-mmx            disable MMX optimizations
312   --disable-mmxext         disable MMXEXT optimizations
313   --disable-sse            disable SSE optimizations
314   --disable-sse2           disable SSE2 optimizations
315   --disable-sse3           disable SSE3 optimizations
316   --disable-ssse3          disable SSSE3 optimizations
317   --disable-sse4           disable SSE4 optimizations
318   --disable-sse42          disable SSE4.2 optimizations
319   --disable-avx            disable AVX optimizations
320   --disable-xop            disable XOP optimizations
321   --disable-fma3           disable FMA3 optimizations
322   --disable-fma4           disable FMA4 optimizations
323   --disable-avx2           disable AVX2 optimizations
324   --disable-armv5te        disable armv5te optimizations
325   --disable-armv6          disable armv6 optimizations
326   --disable-armv6t2        disable armv6t2 optimizations
327   --disable-vfp            disable VFP optimizations
328   --disable-neon           disable NEON optimizations
329   --disable-inline-asm     disable use of inline assembly
330   --disable-x86asm         disable use of standalone x86 assembly
331
332 Developer options (useful when working on Libav itself):
333   --disable-debug          disable debugging symbols
334   --enable-debug=LEVEL     set the debug level [$debuglevel]
335   --disable-optimizations  disable compiler optimizations
336   --enable-extra-warnings  enable more compiler warnings
337   --samples=PATH           location of test samples for FATE, if not set use
338                            \$LIBAV_SAMPLES at make invocation time.
339   --enable-neon-clobber-test check NEON registers for clobbering (should be
340                            used only for debugging purposes)
341   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
342                            should be used only for debugging purposes)
343   --enable-random          randomly enable/disable components
344   --disable-random
345   --enable-random=LIST     randomly enable/disable specific components or
346   --disable-random=LIST    component groups. LIST is a comma-separated list
347                            of NAME[:PROB] entries where NAME is a component
348                            (group) and PROB the probability associated with
349                            NAME (default 0.5).
350   --random-seed=VALUE      seed value for --enable/disable-random
351   --disable-valgrind-backtrace do not print a backtrace under Valgrind
352                            (only applies to --disable-optimizations builds)
353   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
354                            in the name) of tests whose result is ignored
355
356 NOTE: Object files are built at the place where configure is launched.
357 EOF
358   exit 0
359 }
360
361 quotes='""'
362
363 log(){
364     echo "$@" >> $logfile
365 }
366
367 log_file(){
368     log BEGIN $1
369     i=1
370     while read line; do
371         printf '%5s   %s\n' "${i}" "${line}"
372         i=$(($i+1))
373     done < $1 >> $logfile
374     log END $1
375 }
376
377 echolog(){
378     log "$@"
379     echo "$@"
380 }
381
382 warn(){
383     log "WARNING: $*"
384     WARNINGS="${WARNINGS}WARNING: $*\n"
385 }
386
387 die(){
388     echolog "$@"
389     cat <<EOF
390
391 If you think configure made a mistake, make sure you are using the latest
392 version from Git.  If the latest version fails, report the problem to the
393 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
394 EOF
395     if disabled logging; then
396         cat <<EOF
397 Rerun configure with logging enabled (do not use --disable-logging), and
398 include the log this produces with your report.
399 EOF
400     else
401         cat <<EOF
402 Include the log file "$logfile" produced by configure as this will help
403 solving the problem.
404 EOF
405     fi
406     exit 1
407 }
408
409 # Avoid locale weirdness, besides we really just want to translate ASCII.
410 toupper(){
411     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
412 }
413
414 tolower(){
415     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
416 }
417
418 c_escape(){
419     echo "$*" | sed 's/["\\]/\\\0/g'
420 }
421
422 sh_quote(){
423     v=$(echo "$1" | sed "s/'/'\\\\''/g")
424     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
425     echo "$v"
426 }
427
428 cleanws(){
429     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
430 }
431
432 filter(){
433     pat=$1
434     shift
435     for v; do
436         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
437     done
438 }
439
440 filter_out(){
441     pat=$1
442     shift
443     for v; do
444         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
445     done
446 }
447
448 map(){
449     m=$1
450     shift
451     for v; do eval $m; done
452 }
453
454 add_suffix(){
455     suffix=$1
456     shift
457     for v; do echo ${v}${suffix}; done
458 }
459
460 set_all(){
461     value=$1
462     shift
463     for var in $*; do
464         eval $var=$value
465     done
466 }
467
468 set_weak(){
469     value=$1
470     shift
471     for var; do
472         eval : \${$var:=$value}
473     done
474 }
475
476 sanitize_var_name(){
477     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
478 }
479
480 set_sanitized(){
481     var=$1
482     shift
483     eval $(sanitize_var_name "$var")='$*'
484 }
485
486 get_sanitized(){
487     eval echo \$$(sanitize_var_name "$1")
488 }
489
490 pushvar(){
491     for pvar in $*; do
492         eval level=\${${pvar}_level:=0}
493         eval ${pvar}_${level}="\$$pvar"
494         eval ${pvar}_level=$(($level+1))
495     done
496 }
497
498 popvar(){
499     for pvar in $*; do
500         eval level=\${${pvar}_level:-0}
501         test $level = 0 && continue
502         eval level=$(($level-1))
503         eval $pvar="\${${pvar}_${level}}"
504         eval ${pvar}_level=$level
505         eval unset ${pvar}_${level}
506     done
507 }
508
509 enable(){
510     set_all yes $*
511 }
512
513 disable(){
514     set_all no $*
515 }
516
517 enable_weak(){
518     set_weak yes $*
519 }
520
521 disable_weak(){
522     set_weak no $*
523 }
524
525 enable_sanitized(){
526     for var; do
527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 disable_sanitized(){
532     for var; do
533         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
534     done
535 }
536
537 do_enable_deep(){
538     for var; do
539         enabled $var && continue
540         eval sel="\$${var}_select"
541         eval sgs="\$${var}_suggest"
542         pushvar var sgs
543         enable_deep $sel
544         popvar sgs
545         enable_deep_weak $sgs
546         popvar var
547     done
548 }
549
550 enable_deep(){
551     do_enable_deep $*
552     enable $*
553 }
554
555 enable_deep_weak(){
556     for var; do
557         disabled $var && continue
558         pushvar var
559         do_enable_deep $var
560         popvar var
561         enable_weak $var
562     done
563 }
564
565 enabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xyes"
568 }
569
570 disabled(){
571     test "${1#!}" = "$1" && op== || op=!=
572     eval test "x\$${1#!}" $op "xno"
573 }
574
575 enabled_all(){
576     for opt; do
577         enabled $opt || return 1
578     done
579 }
580
581 disabled_all(){
582     for opt; do
583         disabled $opt || return 1
584     done
585 }
586
587 enabled_any(){
588     for opt; do
589         enabled $opt && return 0
590     done
591 }
592
593 disabled_any(){
594     for opt; do
595         disabled $opt && return 0
596     done
597     return 1
598 }
599
600 set_default(){
601     for opt; do
602         eval : \${$opt:=\$${opt}_default}
603     done
604 }
605
606 is_in(){
607     value=$1
608     shift
609     for var in $*; do
610         [ $var = $value ] && return 0
611     done
612     return 1
613 }
614
615 check_deps(){
616     for cfg; do
617         enabled ${cfg}_checking && die "Circular dependency for $cfg."
618         disabled ${cfg}_checking && continue
619         enable ${cfg}_checking
620         append allopts $cfg
621
622         eval dep_all="\$${cfg}_deps"
623         eval dep_any="\$${cfg}_deps_any"
624         eval dep_con="\$${cfg}_conflict"
625         eval dep_sel="\$${cfg}_select"
626         eval dep_sgs="\$${cfg}_suggest"
627         eval dep_ifa="\$${cfg}_if"
628         eval dep_ifn="\$${cfg}_if_any"
629
630         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
631         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
632         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
633
634         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
635         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
636         enabled_all  $dep_all || disable $cfg
637         enabled_any  $dep_any || disable $cfg
638         disabled_all $dep_con || disable $cfg
639         disabled_any $dep_sel && disable $cfg
640
641         if enabled $cfg; then
642             enable_deep $dep_sel
643             enable_deep_weak $dep_sgs
644             for dep in $dep_all $dep_any $dep_sgs; do
645                 # filter out library deps, these do not belong in extralibs
646                 is_in $dep $LIBRARY_LIST && continue
647                 enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
648             done
649         fi
650
651         disable ${cfg}_checking
652     done
653 }
654
655 print_config(){
656     pfx=$1
657     files=$2
658     shift 2
659     map 'eval echo "$v \${$v:-no}"' "$@" |
660     awk "BEGIN { split(\"$files\", files) }
661         {
662             c = \"$pfx\" toupper(\$1);
663             v = \$2;
664             sub(/yes/, 1, v);
665             sub(/no/,  0, v);
666             for (f in files) {
667                 file = files[f];
668                 if (file ~ /\\.h\$/) {
669                     printf(\"#define %s %d\\n\", c, v) >>file;
670                 } else if (file ~ /\\.asm\$/) {
671                     printf(\"%%define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.mak\$/) {
673                     n = -v ? \"\" : \"!\";
674                     printf(\"%s%s=yes\\n\", n, c) >>file;
675                 }
676             }
677         }"
678 }
679
680 print_enabled(){
681     suf=$1
682     shift
683     for v; do
684         enabled $v && printf "%s\n" ${v%$suf}
685     done
686 }
687
688 append(){
689     var=$1
690     shift
691     eval "$var=\"\$$var $*\""
692 }
693
694 prepend(){
695     var=$1
696     shift
697     eval "$var=\"$* \$$var\""
698 }
699
700 unique(){
701     var=$1
702     uniq_list=""
703     for tok in $(eval echo \$$var); do
704         uniq_list="$(filter_out $tok $uniq_list) $tok"
705     done
706     eval "$var=\"${uniq_list}\""
707 }
708
709 resolve(){
710     var=$1
711     tmpvar=
712     for entry in $(eval echo \$$var); do
713         tmpvar="$tmpvar $(eval echo \$${entry})"
714     done
715     eval "$var=\"${tmpvar}\""
716 }
717
718 add_cppflags(){
719     append CPPFLAGS "$@"
720 }
721
722 add_cflags(){
723     append CFLAGS $($cflags_filter "$@")
724 }
725
726 add_cflags_headers(){
727     append CFLAGS_HEADERS $($cflags_filter "$@")
728 }
729
730 add_asflags(){
731     append ASFLAGS $($asflags_filter "$@")
732 }
733
734 add_objcflags(){
735     append OBJCFLAGS $($objcflags_filter "$@")
736 }
737
738 add_ldflags(){
739     append LDFLAGS $($ldflags_filter "$@")
740 }
741
742 add_ldexeflags(){
743     append LDEXEFLAGS $($ldflags_filter "$@")
744 }
745
746 add_stripflags(){
747     append STRIPFLAGS "$@"
748 }
749
750 add_extralibs(){
751     prepend extralibs $($ldflags_filter "$@")
752 }
753
754 add_host_cppflags(){
755     append host_cppflags "$@"
756 }
757
758 add_host_cflags(){
759     append host_cflags $($host_cflags_filter "$@")
760 }
761
762 add_host_ldflags(){
763     append host_ldflags $($host_ldflags_filter "$@")
764 }
765
766 add_compat(){
767     append compat_objs $1
768     shift
769     map 'add_cppflags -D$v' "$@"
770 }
771
772 check_cmd(){
773     log "$@"
774     "$@" >> $logfile 2>&1
775 }
776
777 cc_o(){
778     eval printf '%s\\n' $CC_O
779 }
780
781 cc_e(){
782     eval printf '%s\\n' $CC_E
783 }
784
785 check_cc(){
786     log check_cc "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
790 }
791
792 check_objcc(){
793     log check_objcc "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
797 }
798
799 check_cpp(){
800     log check_cpp "$@"
801     cat > $TMPC
802     log_file $TMPC
803     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
804 }
805
806 as_o(){
807     eval printf '%s\\n' $AS_O
808 }
809
810 check_as(){
811     log check_as "$@"
812     cat > $TMPS
813     log_file $TMPS
814     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
815 }
816
817 check_inline_asm(){
818     log check_inline_asm "$@"
819     name="$1"
820     code="$2"
821     shift 2
822     disable $name
823     check_cc "$@" <<EOF && enable $name
824 void foo(void){ __asm__ volatile($code); }
825 EOF
826 }
827
828 check_insn(){
829     log check_insn "$@"
830     check_inline_asm ${1}_inline "\"$2\""
831     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
832 }
833
834 check_x86asm(){
835     log check_x86asm "$@"
836     echo "$1" > $TMPS
837     log_file $TMPS
838     shift 1
839     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
840 }
841
842 ld_o(){
843     eval printf '%s\\n' $LD_O
844 }
845
846 check_ld(){
847     log check_ld "$@"
848     flags=$(filter_out '-l*' "$@")
849     libs=$(filter '-l*' "$@")
850     check_cc $($cflags_filter $flags) || return
851     flags=$($ldflags_filter $flags)
852     libs=$($ldflags_filter $libs)
853     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
854 }
855
856 print_include(){
857     hdr=$1
858     test "${hdr%.h}" = "${hdr}" &&
859         echo "#include $hdr"    ||
860         echo "#include <$hdr>"
861 }
862
863 check_code(){
864     log check_code "$@"
865     check=$1
866     headers=$2
867     code=$3
868     shift 3
869     {
870         for hdr in $headers; do
871             print_include $hdr
872         done
873         echo "int main(void) { $code; return 0; }"
874     } | check_$check "$@"
875 }
876
877 check_cppflags(){
878     log check_cppflags "$@"
879     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
880 #include <stdlib.h>;
881 EOF
882 }
883
884 test_cflags(){
885     log test_cflags "$@"
886     set -- $($cflags_filter "$@")
887     check_cc "$@" <<EOF
888 int x;
889 EOF
890 }
891
892 check_cflags(){
893     log check_cflags "$@"
894     test_cflags "$@" && add_cflags "$@"
895 }
896
897 test_objcflags(){
898     log test_objcflags "$@"
899     set -- $($objcflags_filter "$@")
900     check_objcc "$@" <<EOF
901 int x;
902 EOF
903 }
904
905 check_objcflags(){
906     log check_objcflags "$@"
907     test_objcflags "$@" && add_objcflags "$@"
908 }
909
910 test_ldflags(){
911     log test_ldflags "$@"
912     check_ld "$@" <<EOF
913 int main(void){ return 0; }
914 EOF
915 }
916
917 check_ldflags(){
918     log check_ldflags "$@"
919     test_ldflags "$@" && add_ldflags "$@"
920 }
921
922 test_stripflags(){
923     log test_stripflags "$@"
924     # call check_cc to get a fresh TMPO
925     check_cc <<EOF
926 int main(void) { return 0; }
927 EOF
928     check_cmd $strip $STRIPFLAGS "$@" $TMPO
929 }
930
931 check_stripflags(){
932     log check_stripflags "$@"
933     test_stripflags "$@" && add_stripflags "$@"
934 }
935
936 check_header(){
937     log check_header "$@"
938     header=$1
939     shift
940     disable_sanitized $header
941     check_cpp "$@" <<EOF && enable_sanitized $header
942 #include <$header>
943 int x;
944 EOF
945 }
946
947 check_func(){
948     log check_func "$@"
949     func=$1
950     shift
951     disable $func
952     check_ld "$@" <<EOF && enable $func
953 extern int $func();
954 int main(void){ $func(); }
955 EOF
956 }
957
958 check_mathfunc(){
959     log check_mathfunc "$@"
960     func=$1
961     narg=$2
962     shift 2
963     test $narg = 2 && args="f, g" || args="f"
964     disable $func
965     check_ld "$@" <<EOF && enable $func
966 #include <math.h>
967 float foo(float f, float g) { return $func($args); }
968 int main(void){ return 0; }
969 EOF
970 }
971
972 check_func_headers(){
973     log check_func_headers "$@"
974     headers=$1
975     funcs=$2
976     shift 2
977     {
978         for hdr in $headers; do
979             print_include $hdr
980         done
981         for func in $funcs; do
982             echo "long check_$func(void) { return (long) $func; }"
983         done
984         echo "int main(void) { return 0; }"
985     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
986 }
987
988 check_cpp_condition(){
989     log check_cpp_condition "$@"
990     header=$1
991     condition=$2
992     shift 2
993     check_cpp "$@" <<EOF
994 #include <$header>
995 #if !($condition)
996 #error "unsatisfied condition: $condition"
997 #endif
998 EOF
999 }
1000
1001 test_cflags_cpp(){
1002     log test_cflags_cpp "$@"
1003     flags=$1
1004     condition=$2
1005     shift 2
1006     set -- $($cflags_filter "$flags")
1007     check_cpp "$@" <<EOF
1008 #if !($condition)
1009 #error "unsatisfied condition: $condition"
1010 #endif
1011 EOF
1012 }
1013
1014 check_lib(){
1015     log check_lib "$@"
1016     name="$1"
1017     headers="$2"
1018     funcs="$3"
1019     shift 3
1020     disable $name
1021     check_func_headers "$headers" "$funcs" "$@" &&
1022         enable $name && eval ${name}_extralibs="\$@"
1023 }
1024
1025 check_pkg_config(){
1026     log check_pkg_config "$@"
1027     name="$1"
1028     pkg_version="$2"
1029     pkg="${2%% *}"
1030     headers="$3"
1031     funcs="$4"
1032     shift 4
1033     disable $name
1034     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1035     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1036     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1037     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1038         enable $name &&
1039         add_cflags    "$pkg_cflags" &&
1040         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1041 }
1042
1043 check_exec(){
1044     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1045 }
1046
1047 check_exec_crash(){
1048     log check_exec_crash "$@"
1049     code=$(cat)
1050
1051     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1052     # are safe but may not be available everywhere.  Thus we use
1053     # raise(SIGTERM) instead.  The check is run in a subshell so we
1054     # can redirect the "Terminated" message from the shell.  SIGBUS
1055     # is not defined by standard C so it is used conditionally.
1056
1057     (check_exec "$@") >> $logfile 2>&1 <<EOF
1058 #include <signal.h>
1059 static void sighandler(int sig){
1060     raise(SIGTERM);
1061 }
1062 int foo(void){
1063     $code
1064 }
1065 int (*func_ptr)(void) = foo;
1066 int main(void){
1067     signal(SIGILL, sighandler);
1068     signal(SIGFPE, sighandler);
1069     signal(SIGSEGV, sighandler);
1070 #ifdef SIGBUS
1071     signal(SIGBUS, sighandler);
1072 #endif
1073     return func_ptr();
1074 }
1075 EOF
1076 }
1077
1078 check_type(){
1079     log check_type "$@"
1080     headers=$1
1081     type=$2
1082     shift 2
1083     disable_sanitized "$type"
1084     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1085 }
1086
1087 check_struct(){
1088     log check_struct "$@"
1089     headers=$1
1090     struct=$2
1091     member=$3
1092     shift 3
1093     disable_sanitized "${struct}_${member}"
1094     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1095         enable_sanitized "${struct}_${member}"
1096 }
1097
1098 check_builtin(){
1099     log check_builtin "$@"
1100     name=$1
1101     headers=$2
1102     builtin=$3
1103     shift 3
1104     disable "$name"
1105     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1106 }
1107
1108 check_compile_assert(){
1109     log check_compile_assert "$@"
1110     name=$1
1111     headers=$2
1112     condition=$3
1113     shift 3
1114     disable "$name"
1115     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1116 }
1117
1118 require(){
1119     log require "$@"
1120     name_version="$1"
1121     name="${1%% *}"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1126 }
1127
1128 require_header(){
1129     log require "$@"
1130     header="$1"
1131     shift
1132     check_header "$header" "$@" || die "ERROR: $header not found"
1133 }
1134
1135 require_cpp_condition(){
1136     log require "$@"
1137     header="$1"
1138     condition="$2"
1139     shift 2
1140     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1141 }
1142
1143 require_pkg_config(){
1144     log require_pkg_config "$@"
1145     pkg_version="$2"
1146     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1147 }
1148
1149 hostcc_e(){
1150     eval printf '%s\\n' $HOSTCC_E
1151 }
1152
1153 hostcc_o(){
1154     eval printf '%s\\n' $HOSTCC_O
1155 }
1156
1157 check_host_cc(){
1158     log check_host_cc "$@"
1159     cat > $TMPC
1160     log_file $TMPC
1161     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1162 }
1163
1164 check_host_cpp(){
1165     log check_host_cpp "$@"
1166     cat > $TMPC
1167     log_file $TMPC
1168     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1169 }
1170
1171 check_host_cppflags(){
1172     log check_host_cppflags "$@"
1173     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1174 #include <stdlib.h>;
1175 EOF
1176 }
1177
1178 check_host_cflags(){
1179     log check_host_cflags "$@"
1180     set -- $($host_cflags_filter "$@")
1181     check_host_cc "$@" <<EOF && append host_cflags "$@"
1182 int x;
1183 EOF
1184 }
1185
1186 check_host_cpp_condition(){
1187     log check_host_cpp_condition "$@"
1188     header=$1
1189     condition=$2
1190     shift 2
1191     check_host_cpp "$@" <<EOF
1192 #include <$header>
1193 #if !($condition)
1194 #error "unsatisfied condition: $condition"
1195 #endif
1196 EOF
1197 }
1198
1199 apply(){
1200     file=$1
1201     shift
1202     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1203 }
1204
1205 cp_if_changed(){
1206     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1207     mkdir -p "$(dirname $2)"
1208     cp -f "$1" "$2"
1209 }
1210
1211 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1212 # system-dependent things.
1213
1214 AVCODEC_COMPONENTS="
1215     bsfs
1216     decoders
1217     encoders
1218     hwaccels
1219     parsers
1220 "
1221
1222 AVDEVICE_COMPONENTS="
1223     indevs
1224     outdevs
1225 "
1226 AVFILTER_COMPONENTS="
1227     filters
1228 "
1229 AVFORMAT_COMPONENTS="
1230     demuxers
1231     muxers
1232     protocols
1233 "
1234
1235 AVRESAMPLE_COMPONENTS=""
1236 AVUTIL_COMPONENTS=""
1237
1238 COMPONENT_LIST="
1239     $AVCODEC_COMPONENTS
1240     $AVDEVICE_COMPONENTS
1241     $AVFILTER_COMPONENTS
1242     $AVFORMAT_COMPONENTS
1243     $AVRESAMPLE_COMPONENTS
1244     $AVUTIL_COMPONENTS
1245 "
1246
1247 EXAMPLE_LIST="
1248     decode_audio_example
1249     decode_video_example
1250     encode_audio_example
1251     encode_video_example
1252     filter_audio_example
1253     metadata_example
1254     output_example
1255     qsvdec_example
1256     transcode_aac_example
1257 "
1258
1259 # catchall list of things that require external libs to link
1260 EXTRALIBS_LIST="
1261     cpu_init
1262     cws2fws
1263 "
1264
1265 HWACCEL_LIBRARY_NONFREE_LIST="
1266     cuda
1267     libnpp
1268 "
1269 HWACCEL_LIBRARY_LIST="
1270     $HWACCEL_LIBRARY_NONFREE_LIST
1271     d3d11va
1272     dxva2
1273     libmfx
1274     mmal
1275     nvenc
1276     omx
1277     vaapi
1278     vda
1279     vdpau
1280 "
1281
1282 EXTERNAL_LIBRARY_GPL_LIST="
1283     libcdio
1284     libx264
1285     libx265
1286     libxavs
1287     libxvid
1288 "
1289
1290 EXTERNAL_LIBRARY_NONFREE_LIST="
1291     libfaac
1292     libfdk_aac
1293     openssl
1294 "
1295
1296 EXTERNAL_LIBRARY_VERSION3_LIST="
1297     libopencore_amrnb
1298     libopencore_amrwb
1299     libvo_aacenc
1300     libvo_amrwbenc
1301 "
1302
1303 EXTERNAL_LIBRARY_LIST="
1304     $EXTERNAL_LIBRARY_GPL_LIST
1305     $EXTERNAL_LIBRARY_NONFREE_LIST
1306     $EXTERNAL_LIBRARY_VERSION3_LIST
1307     avisynth
1308     avxsynth
1309     frei0r
1310     gnutls
1311     libbs2b
1312     libdc1394
1313     libdcadec
1314     libfontconfig
1315     libfreetype
1316     libgsm
1317     libhdcd
1318     libilbc
1319     libjack
1320     libkvazaar
1321     libmp3lame
1322     libopencv
1323     libopenh264
1324     libopenjpeg
1325     libopus
1326     libpulse
1327     librtmp
1328     libschroedinger
1329     libsnappy
1330     libspeex
1331     libtheora
1332     libtwolame
1333     libvorbis
1334     libvpx
1335     libwavpack
1336     libwebp
1337     libxcb
1338     libxcb_shm
1339     libxcb_xfixes
1340 "
1341
1342 SYSTEM_LIBRARY_LIST="
1343     bzlib
1344     zlib
1345 "
1346
1347 FEATURE_LIST="
1348     gray
1349     hardcoded_tables
1350     omx_rpi
1351     runtime_cpudetect
1352     safe_bitstream_reader
1353     shared
1354     small
1355     sram
1356     static
1357     swscale_alpha
1358 "
1359
1360 LIBRARY_LIST="
1361     avcodec
1362     avdevice
1363     avfilter
1364     avformat
1365     avresample
1366     avutil
1367     swscale
1368 "
1369
1370 LICENSE_LIST="
1371     gpl
1372     nonfree
1373     version3
1374 "
1375
1376 PROGRAM_LIST="
1377     avconv
1378     avplay
1379     avprobe
1380 "
1381
1382 SUBSYSTEM_LIST="
1383     dct
1384     doc
1385     error_resilience
1386     faan
1387     fft
1388     lsp
1389     lzo
1390     mdct
1391     network
1392     rdft
1393 "
1394
1395 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1396 CONFIG_LIST="
1397     $EXAMPLE_LIST
1398     $EXTERNAL_LIBRARY_LIST
1399     $HWACCEL_LIBRARY_LIST
1400     $FEATURE_LIST
1401     $LICENSE_LIST
1402     $LIBRARY_LIST
1403     $PROGRAM_LIST
1404     $SUBSYSTEM_LIST
1405     $SYSTEM_LIBRARY_LIST
1406     neon_clobber_test
1407     pic
1408     pod2man
1409     texi2html
1410     thumb
1411     valgrind_backtrace
1412     xmm_clobber_test
1413     $COMPONENT_LIST
1414 "
1415
1416 THREADS_LIST="
1417     pthreads
1418     w32threads
1419 "
1420
1421 ATOMICS_LIST="
1422     atomics_gcc
1423     atomics_suncc
1424     atomics_win32
1425 "
1426
1427 ARCH_LIST="
1428     aarch64
1429     alpha
1430     arm
1431     avr32
1432     avr32_ap
1433     avr32_uc
1434     bfin
1435     ia64
1436     m68k
1437     mips
1438     mips64
1439     parisc
1440     ppc
1441     ppc64
1442     s390
1443     sh4
1444     sparc
1445     sparc64
1446     tilegx
1447     tilepro
1448     tomi
1449     x86
1450     x86_32
1451     x86_64
1452 "
1453
1454 ARCH_EXT_LIST_ARM="
1455     armv5te
1456     armv6
1457     armv6t2
1458     armv8
1459     neon
1460     vfp
1461     vfpv3
1462 "
1463
1464 ARCH_EXT_LIST_X86_SIMD="
1465     amd3dnow
1466     amd3dnowext
1467     avx
1468     avx2
1469     fma3
1470     fma4
1471     mmx
1472     mmxext
1473     sse
1474     sse2
1475     sse3
1476     sse4
1477     sse42
1478     ssse3
1479     xop
1480 "
1481
1482 ARCH_EXT_LIST_PPC="
1483     altivec
1484     dcbzl
1485     ldbrx
1486     power8
1487     ppc4xx
1488     vsx
1489 "
1490
1491 ARCH_EXT_LIST_X86="
1492     $ARCH_EXT_LIST_X86_SIMD
1493     cpunop
1494     i686
1495 "
1496
1497 ARCH_EXT_LIST_MIPS="
1498     loongson
1499     mips32r1
1500     mips64r1
1501     mips32r2
1502     mips64r2
1503     mips32r6
1504     mips64r6
1505 "
1506
1507 ARCH_EXT_LIST="
1508     $ARCH_EXT_LIST_ARM
1509     $ARCH_EXT_LIST_MIPS
1510     $ARCH_EXT_LIST_PPC
1511     $ARCH_EXT_LIST_X86
1512     vis
1513 "
1514
1515 ARCH_FEATURES="
1516     aligned_stack
1517     fast_64bit
1518     fast_clz
1519     fast_cmov
1520     local_aligned_8
1521     local_aligned_16
1522     local_aligned_32
1523     simd_align_16
1524     simd_align_32
1525 "
1526
1527 BUILTIN_LIST="
1528     atomic_cas_ptr
1529     machine_rw_barrier
1530     MemoryBarrier
1531     mm_empty
1532     rdtsc
1533     sem_timedwait
1534     sync_val_compare_and_swap
1535 "
1536 HAVE_LIST_CMDLINE="
1537     inline_asm
1538     symver
1539     x86asm
1540 "
1541
1542 HAVE_LIST_PUB="
1543     bigendian
1544     fast_unaligned
1545 "
1546
1547 HEADERS_LIST="
1548     AVFoundation_AVFoundation_h
1549     alsa_asoundlib_h
1550     arpa_inet_h
1551     cdio_paranoia_h
1552     cdio_paranoia_paranoia_h
1553     d3d11_h
1554     dispatch_dispatch_h
1555     dev_bktr_ioctl_bt848_h
1556     dev_bktr_ioctl_meteor_h
1557     dev_ic_bt8xx_h
1558     dev_video_bktr_ioctl_bt848_h
1559     dev_video_meteor_ioctl_meteor_h
1560     direct_h
1561     dlfcn_h
1562     dxva_h
1563     gsm_h
1564     io_h
1565     mach_mach_time_h
1566     machine_ioctl_bt848_h
1567     machine_ioctl_meteor_h
1568     malloc_h
1569     poll_h
1570     sndio_h
1571     soundcard_h
1572     stdatomic_h
1573     sys_mman_h
1574     sys_param_h
1575     sys_resource_h
1576     sys_select_h
1577     sys_soundcard_h
1578     sys_time_h
1579     sys_un_h
1580     sys_videoio_h
1581     unistd_h
1582     valgrind_valgrind_h
1583     windows_h
1584     winsock2_h
1585 "
1586
1587 INTRINSICS_LIST="
1588     intrinsics_neon
1589 "
1590
1591 MATH_FUNCS="
1592     atanf
1593     atan2f
1594     cbrtf
1595     cosf
1596     exp2
1597     exp2f
1598     expf
1599     isinf
1600     isnan
1601     ldexpf
1602     llrint
1603     llrintf
1604     log2
1605     log2f
1606     log10f
1607     lrint
1608     lrintf
1609     powf
1610     rint
1611     round
1612     roundf
1613     sinf
1614     trunc
1615     truncf
1616 "
1617
1618 SYSTEM_FUNCS="
1619     aligned_malloc
1620     clock_gettime
1621     closesocket
1622     CommandLineToArgvW
1623     CoTaskMemFree
1624     CryptGenRandom
1625     fcntl
1626     flt_lim
1627     fork
1628     getaddrinfo
1629     gethrtime
1630     getopt
1631     GetProcessAffinityMask
1632     GetProcessMemoryInfo
1633     GetProcessTimes
1634     getrusage
1635     GetSystemTimeAsFileTime
1636     gettimeofday
1637     gmtime_r
1638     inet_aton
1639     isatty
1640     LoadLibrary
1641     localtime_r
1642     mach_absolute_time
1643     MapViewOfFile
1644     memalign
1645     mkstemp
1646     mmap
1647     mprotect
1648     nanosleep
1649     posix_memalign
1650     sched_getaffinity
1651     SetConsoleTextAttribute
1652     setmode
1653     setrlimit
1654     Sleep
1655     strerror_r
1656     sysconf
1657     sysctl
1658     usleep
1659     VirtualAlloc
1660 "
1661
1662 TOOLCHAIN_FEATURES="
1663     as_arch_directive
1664     as_fpu_directive
1665     as_func
1666     as_object_arch
1667     asm_mod_q
1668     attribute_may_alias
1669     attribute_packed
1670     blocks_extension
1671     ebp_available
1672     ebx_available
1673     gnu_as
1674     ibm_asm
1675     inline_asm_labels
1676     pragma_deprecated
1677     symver_asm_label
1678     symver_gnu_asm
1679     vfp_args
1680     xform_asm
1681     xmm_clobbers
1682 "
1683
1684 TYPES_LIST="
1685     CONDITION_VARIABLE_Ptr
1686     socklen_t
1687     struct_addrinfo
1688     struct_group_source_req
1689     struct_ip_mreq_source
1690     struct_ipv6_mreq
1691     struct_pollfd
1692     struct_rusage_ru_maxrss
1693     struct_sockaddr_in6
1694     struct_sockaddr_sa_len
1695     struct_sockaddr_storage
1696     struct_v4l2_frmivalenum_discrete
1697 "
1698
1699 HAVE_LIST="
1700     $ARCH_EXT_LIST
1701     $(add_suffix _external $ARCH_EXT_LIST)
1702     $(add_suffix _inline   $ARCH_EXT_LIST)
1703     $ARCH_FEATURES
1704     $BUILTIN_LIST
1705     $HAVE_LIST_CMDLINE
1706     $HAVE_LIST_PUB
1707     $HEADERS_LIST
1708     $INTRINSICS_LIST
1709     $MATH_FUNCS
1710     $SYSTEM_FUNCS
1711     $THREADS_LIST
1712     $TOOLCHAIN_FEATURES
1713     $TYPES_LIST
1714     dos_paths
1715     libc_msvcrt
1716     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1717     sdl
1718     section_data_rel_ro
1719     threads
1720     vaapi_drm
1721     vaapi_x11
1722     vdpau_x11
1723 "
1724
1725 # options emitted with CONFIG_ prefix but not available on the command line
1726 CONFIG_EXTRA="
1727     aandcttables
1728     ac3dsp
1729     adts_header
1730     audio_frame_queue
1731     audiodsp
1732     blockdsp
1733     bswapdsp
1734     cabac
1735     dirac_parse
1736     dvprofile
1737     faandct
1738     faanidct
1739     fdctdsp
1740     flacdsp
1741     fmtconvert
1742     g722dsp
1743     gmp
1744     golomb
1745     gplv3
1746     h263dsp
1747     h264chroma
1748     h264dsp
1749     h264parse
1750     h264pred
1751     h264qpel
1752     hevc_ps
1753     hpeldsp
1754     huffman
1755     huffyuvdsp
1756     huffyuvencdsp
1757     idctdsp
1758     iirfilter
1759     imdct15
1760     intrax8
1761     iso_media
1762     ividsp
1763     jpegtables
1764     lgplv3
1765     libx262
1766     libxcb_shape
1767     lpc
1768     lzf
1769     me_cmp
1770     mpeg_er
1771     mpegaudio
1772     mpegaudiodsp
1773     mpegaudioheader
1774     mpegvideo
1775     mpegvideoenc
1776     mss34dsp
1777     pixblockdsp
1778     qpeldsp
1779     qsv
1780     qsvdec
1781     qsvenc
1782     rangecoder
1783     riffdec
1784     riffenc
1785     rtpdec
1786     rtpenc_chain
1787     rv34dsp
1788     sinewin
1789     snappy
1790     srtp
1791     startcode
1792     texturedsp
1793     texturedspenc
1794     tpeldsp
1795     vaapi_encode
1796     vc1dsp
1797     videodsp
1798     vp3dsp
1799     vp56dsp
1800     vp8dsp
1801     wma_freqs
1802     wmv2dsp
1803 "
1804
1805 CMDLINE_SELECT="
1806     $ARCH_EXT_LIST
1807     $CONFIG_LIST
1808     $HAVE_LIST_CMDLINE
1809     $THREADS_LIST
1810     asm
1811     cross_compile
1812     debug
1813     extra_warnings
1814     logging
1815     lto
1816     optimizations
1817     rpath
1818 "
1819
1820 PATHS_LIST="
1821     bindir
1822     datadir
1823     docdir
1824     incdir
1825     libdir
1826     mandir
1827     prefix
1828     shlibdir
1829 "
1830
1831 CMDLINE_SET="
1832     $PATHS_LIST
1833     ar
1834     arch
1835     as
1836     cc
1837     objcc
1838     cpu
1839     cross_prefix
1840     custom_allocator
1841     dep_cc
1842     env
1843     extra_version
1844     host_cc
1845     host_cflags
1846     host_extralibs
1847     host_ld
1848     host_ldflags
1849     host_os
1850     ignore_tests
1851     ld
1852     logfile
1853     malloc_prefix
1854     nm
1855     optflags
1856     pkg_config
1857     pkg_config_flags
1858     random_seed
1859     samples
1860     sysinclude
1861     sysroot
1862     target_exec
1863     target_os
1864     target_path
1865     target_samples
1866     toolchain
1867     x86asmexe
1868 "
1869
1870 CMDLINE_APPEND="
1871     extra_cflags
1872     extra_objcflags
1873     host_cppflags
1874 "
1875
1876 # code dependency declarations
1877
1878 # architecture extensions
1879
1880 armv5te_deps="arm"
1881 armv6_deps="arm"
1882 armv6t2_deps="arm"
1883 armv8_deps="aarch64"
1884 neon_deps_any="aarch64 arm"
1885 intrinsics_neon_deps="neon"
1886 vfp_deps_any="aarch64 arm"
1887 vfpv3_deps="vfp"
1888
1889 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1890
1891 altivec_deps="ppc"
1892 ppc4xx_deps="ppc"
1893 vsx_deps="altivec"
1894 power8_deps="vsx"
1895
1896 cpunop_deps="i686"
1897 x86_64_select="i686"
1898 x86_64_suggest="fast_cmov"
1899
1900 amd3dnow_deps="mmx"
1901 amd3dnowext_deps="amd3dnow"
1902 i686_deps="x86"
1903 mmx_deps="x86"
1904 mmxext_deps="mmx"
1905 sse_deps="mmxext"
1906 sse2_deps="sse"
1907 sse3_deps="sse2"
1908 ssse3_deps="sse3"
1909 sse4_deps="ssse3"
1910 sse42_deps="sse4"
1911 avx_deps="sse42"
1912 xop_deps="avx"
1913 fma3_deps="avx"
1914 fma4_deps="avx"
1915 avx2_deps="avx"
1916
1917 mmx_external_deps="x86asm"
1918 mmx_inline_deps="inline_asm"
1919 mmx_suggest="mmx_external mmx_inline"
1920
1921 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1922     eval dep=\$${ext}_deps
1923     eval ${ext}_external_deps='"${dep}_external"'
1924     eval ${ext}_inline_deps='"${dep}_inline"'
1925     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1926 done
1927
1928 aligned_stack_if_any="aarch64 ppc x86"
1929 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1930 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1931 fast_unaligned_if_any="aarch64 ppc x86"
1932 simd_align_16_if_any="altivec neon sse"
1933 simd_align_32_if_any="avx"
1934
1935 # system capabilities
1936 symver_if_any="symver_asm_label symver_gnu_asm"
1937 valgrind_backtrace_conflict="optimizations"
1938 valgrind_backtrace_deps="valgrind_valgrind_h"
1939
1940 # threading support
1941 atomics_gcc_if="sync_val_compare_and_swap"
1942 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1943 atomics_win32_if="MemoryBarrier"
1944 atomics_native_if_any="$ATOMICS_LIST"
1945 w32threads_deps="atomics_native"
1946 threads_if_any="$THREADS_LIST"
1947
1948 # subsystems
1949 dct_select="rdft"
1950 dirac_parse_select="golomb"
1951 error_resilience_select="me_cmp"
1952 faandct_deps="faan fdctdsp"
1953 faanidct_deps="faan idctdsp"
1954 h264dsp_select="startcode"
1955 hevc_ps_select="golomb"
1956 intrax8_select="blockdsp idctdsp"
1957 mdct_select="fft"
1958 rdft_select="fft"
1959 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1960 mpeg_er_select="error_resilience"
1961 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1962 mpegaudiodsp_select="dct"
1963 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1964 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1965 vc1dsp_select="h264chroma qpeldsp startcode"
1966
1967 # decoders / encoders
1968 aac_decoder_select="adts_header imdct15 mdct sinewin"
1969 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1970 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1971 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1972 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1973 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1974 adpcm_g722_decoder_select="g722dsp"
1975 adpcm_g722_encoder_select="g722dsp"
1976 aic_decoder_select="golomb idctdsp"
1977 alac_encoder_select="lpc"
1978 als_decoder_select="bswapdsp"
1979 amrnb_decoder_select="lsp"
1980 amrwb_decoder_select="lsp"
1981 amv_decoder_select="sp5x_decoder"
1982 ape_decoder_select="bswapdsp"
1983 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1984 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1985 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1986 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1987 atrac1_decoder_select="mdct sinewin"
1988 atrac3_decoder_select="mdct"
1989 atrac3p_decoder_select="mdct sinewin"
1990 bink_decoder_select="blockdsp hpeldsp"
1991 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1992 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1993 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1994 cllc_decoder_select="bswapdsp"
1995 comfortnoise_encoder_select="lpc"
1996 cook_decoder_select="audiodsp mdct sinewin"
1997 cscd_decoder_select="lzo"
1998 cscd_decoder_suggest="zlib"
1999 dca_decoder_select="fmtconvert mdct"
2000 dds_decoder_select="texturedsp"
2001 dnxhd_decoder_select="blockdsp idctdsp"
2002 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2003 dvvideo_decoder_select="dvprofile idctdsp"
2004 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2005 dxa_decoder_deps="zlib"
2006 dxv_decoder_select="lzf texturedsp"
2007 eac3_decoder_select="ac3_decoder"
2008 eac3_encoder_select="ac3_encoder"
2009 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2010 eatgq_decoder_select="aandcttables idctdsp"
2011 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2012 exr_decoder_deps="zlib"
2013 ffv1_decoder_select="rangecoder"
2014 ffv1_encoder_select="rangecoder"
2015 ffvhuff_decoder_select="huffyuv_decoder"
2016 ffvhuff_encoder_select="huffyuv_encoder"
2017 fic_decoder_select="golomb"
2018 flac_decoder_select="flacdsp"
2019 flac_encoder_select="bswapdsp flacdsp lpc"
2020 flashsv_decoder_deps="zlib"
2021 flashsv_encoder_deps="zlib"
2022 flashsv2_decoder_deps="zlib"
2023 flv_decoder_select="h263_decoder"
2024 flv_encoder_select="h263_encoder"
2025 fourxm_decoder_select="blockdsp bswapdsp"
2026 fraps_decoder_select="bswapdsp huffman"
2027 g2m_decoder_deps="zlib"
2028 g2m_decoder_select="blockdsp idctdsp jpegtables"
2029 h261_decoder_select="mpeg_er mpegvideo"
2030 h261_encoder_select="aandcttables mpegvideoenc"
2031 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2032 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2033 h263i_decoder_select="h263_decoder"
2034 h263p_encoder_select="h263_encoder"
2035 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2036 h264_decoder_suggest="error_resilience"
2037 hap_decoder_select="snappy texturedsp"
2038 hap_encoder_deps="libsnappy"
2039 hap_encoder_select="texturedspenc"
2040 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2041 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2042 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2043 iac_decoder_select="imc_decoder"
2044 imc_decoder_select="bswapdsp fft mdct sinewin"
2045 indeo3_decoder_select="hpeldsp"
2046 indeo4_decoder_select="ividsp"
2047 indeo5_decoder_select="ividsp"
2048 interplay_video_decoder_select="hpeldsp"
2049 jpegls_decoder_select="mjpeg_decoder"
2050 jv_decoder_select="blockdsp"
2051 lagarith_decoder_select="huffyuvdsp"
2052 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2053 magicyuv_decoder_select="huffyuvdsp"
2054 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2055 metasound_decoder_select="lsp mdct sinewin"
2056 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2057 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2058 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2059 mjpegb_decoder_select="mjpeg_decoder"
2060 mlp_decoder_select="mlp_parser"
2061 motionpixels_decoder_select="bswapdsp"
2062 mp1_decoder_select="mpegaudio"
2063 mp1float_decoder_select="mpegaudio"
2064 mp2_decoder_select="mpegaudio"
2065 mp2float_decoder_select="mpegaudio"
2066 mp3_decoder_select="mpegaudio"
2067 mp3adu_decoder_select="mpegaudio"
2068 mp3adufloat_decoder_select="mpegaudio"
2069 mp3float_decoder_select="mpegaudio"
2070 mp3on4_decoder_select="mpegaudio"
2071 mp3on4float_decoder_select="mpegaudio"
2072 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2073 mpc8_decoder_select="mpegaudiodsp"
2074 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2075 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2076 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2077 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2078 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2079 mpeg4_encoder_select="h263_encoder"
2080 msa1_decoder_select="mss34dsp"
2081 msmpeg4v1_decoder_select="h263_decoder"
2082 msmpeg4v2_decoder_select="h263_decoder"
2083 msmpeg4v2_encoder_select="h263_encoder"
2084 msmpeg4v3_decoder_select="h263_decoder"
2085 msmpeg4v3_encoder_select="h263_encoder"
2086 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2087 mts2_decoder_select="mss34dsp"
2088 mxpeg_decoder_select="mjpeg_decoder"
2089 nellymoser_decoder_select="mdct sinewin"
2090 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2091 nuv_decoder_select="idctdsp lzo"
2092 on2avc_decoder_select="mdct"
2093 opus_decoder_deps="avresample"
2094 opus_decoder_select="imdct15"
2095 png_decoder_deps="zlib"
2096 png_encoder_deps="zlib"
2097 png_encoder_select="huffyuvencdsp"
2098 prores_decoder_select="idctdsp"
2099 prores_encoder_select="fdctdsp"
2100 qcelp_decoder_select="lsp"
2101 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2102 ra_144_encoder_select="audio_frame_queue lpc"
2103 ralf_decoder_select="golomb"
2104 rscc_decoder_deps="zlib"
2105 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2106 rv10_encoder_select="h263_encoder"
2107 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2108 rv20_encoder_select="h263_encoder"
2109 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2110 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2111 screenpresso_decoder_deps="zlib"
2112 sipr_decoder_select="lsp"
2113 sp5x_decoder_select="mjpeg_decoder"
2114 svq1_decoder_select="hpeldsp"
2115 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2116 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2117 svq3_decoder_suggest="zlib"
2118 tak_decoder_select="audiodsp"
2119 tdsc_decoder_deps="zlib"
2120 tdsc_decoder_select="mjpeg_decoder"
2121 theora_decoder_select="vp3_decoder"
2122 thp_decoder_select="mjpeg_decoder"
2123 tiff_decoder_suggest="zlib"
2124 tiff_encoder_suggest="zlib"
2125 truehd_decoder_select="mlp_decoder"
2126 truemotion2_decoder_select="bswapdsp"
2127 truespeech_decoder_select="bswapdsp"
2128 tscc_decoder_deps="zlib"
2129 txd_decoder_select="texturedsp"
2130 twinvq_decoder_select="mdct lsp sinewin"
2131 utvideo_decoder_select="bswapdsp huffyuvdsp"
2132 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2133 vble_decoder_select="huffyuvdsp"
2134 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2135 vc1image_decoder_select="vc1_decoder"
2136 vorbis_decoder_select="mdct"
2137 vorbis_encoder_select="mdct"
2138 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2139 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2140 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2141 vp6a_decoder_select="vp6_decoder"
2142 vp6f_decoder_select="vp6_decoder"
2143 vp7_decoder_select="h264pred videodsp vp8dsp"
2144 vp8_decoder_select="h264pred videodsp vp8dsp"
2145 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2146 webp_decoder_select="vp8_decoder"
2147 wmapro_decoder_select="mdct sinewin wma_freqs"
2148 wmav1_decoder_select="mdct sinewin wma_freqs"
2149 wmav1_encoder_select="mdct sinewin wma_freqs"
2150 wmav2_decoder_select="mdct sinewin wma_freqs"
2151 wmav2_encoder_select="mdct sinewin wma_freqs"
2152 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2153 wmv1_decoder_select="h263_decoder"
2154 wmv1_encoder_select="h263_encoder"
2155 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2156 wmv2_encoder_select="h263_encoder wmv2dsp"
2157 wmv3_decoder_select="vc1_decoder"
2158 wmv3image_decoder_select="wmv3_decoder"
2159 zerocodec_decoder_deps="zlib"
2160 zlib_decoder_deps="zlib"
2161 zlib_encoder_deps="zlib"
2162 zmbv_decoder_deps="zlib"
2163 zmbv_encoder_deps="zlib"
2164
2165 # hardware accelerators
2166 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2167 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2168 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2169 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2170
2171 h263_vaapi_hwaccel_deps="vaapi"
2172 h263_vaapi_hwaccel_select="h263_decoder"
2173 h264_d3d11va_hwaccel_deps="d3d11va"
2174 h264_d3d11va_hwaccel_select="h264_decoder"
2175 h264_d3d11va2_hwaccel_deps="d3d11va"
2176 h264_d3d11va2_hwaccel_select="h264_decoder"
2177 h264_dxva2_hwaccel_deps="dxva2"
2178 h264_dxva2_hwaccel_select="h264_decoder"
2179 h264_mmal_hwaccel_deps="mmal"
2180 h264_qsv_hwaccel_deps="libmfx"
2181 h264_vaapi_hwaccel_deps="vaapi"
2182 h264_vaapi_hwaccel_select="h264_decoder"
2183 h264_vda_hwaccel_deps="vda"
2184 h264_vda_hwaccel_select="h264_decoder"
2185 h264_vda_old_hwaccel_deps="vda"
2186 h264_vda_old_hwaccel_select="h264_decoder"
2187 h264_vdpau_hwaccel_deps="vdpau"
2188 h264_vdpau_hwaccel_select="h264_decoder"
2189 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2190 hevc_d3d11va_hwaccel_select="hevc_decoder"
2191 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2192 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2193 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2194 hevc_dxva2_hwaccel_select="hevc_decoder"
2195 hevc_qsv_hwaccel_deps="libmfx"
2196 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2197 hevc_vaapi_hwaccel_select="hevc_decoder"
2198 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2199 hevc_vdpau_hwaccel_select="hevc_decoder"
2200 mpeg1_vdpau_hwaccel_deps="vdpau"
2201 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2202 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2203 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2204 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2205 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2206 mpeg2_dxva2_hwaccel_deps="dxva2"
2207 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2208 mpeg2_mmal_hwaccel_deps="mmal"
2209 mpeg2_qsv_hwaccel_deps="libmfx"
2210 mpeg2_vaapi_hwaccel_deps="vaapi"
2211 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2212 mpeg2_vdpau_hwaccel_deps="vdpau"
2213 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2214 mpeg4_vaapi_hwaccel_deps="vaapi"
2215 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2216 mpeg4_vdpau_hwaccel_deps="vdpau"
2217 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2218 vc1_d3d11va_hwaccel_deps="d3d11va"
2219 vc1_d3d11va_hwaccel_select="vc1_decoder"
2220 vc1_d3d11va2_hwaccel_deps="d3d11va"
2221 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2222 vc1_dxva2_hwaccel_deps="dxva2"
2223 vc1_dxva2_hwaccel_select="vc1_decoder"
2224 vc1_mmal_hwaccel_deps="mmal"
2225 vc1_qsv_hwaccel_deps="libmfx"
2226 vc1_vaapi_hwaccel_deps="vaapi"
2227 vc1_vaapi_hwaccel_select="vc1_decoder"
2228 vc1_vdpau_hwaccel_deps="vdpau"
2229 vc1_vdpau_hwaccel_select="vc1_decoder"
2230 vp8_qsv_hwaccel_deps="libmfx"
2231 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2232 vp8_vaapi_hwaccel_select="vp8_decoder"
2233 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2234 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2235 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2236 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2237 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2238
2239 # hardware-accelerated codecs
2240 nvenc_deps_any="libdl LoadLibrary"
2241 omx_deps="libdl pthreads"
2242 omx_rpi_select="omx"
2243 qsvdec_select="qsv"
2244 qsvenc_select="qsv"
2245 vaapi_encode_deps="vaapi"
2246
2247 hwupload_cuda_filter_deps="cuda"
2248 scale_npp_filter_deps="cuda libnpp"
2249
2250 h264_mmal_decoder_deps="mmal"
2251 h264_nvenc_encoder_deps="nvenc"
2252 h264_omx_encoder_deps="omx"
2253 h264_qsv_decoder_deps="libmfx"
2254 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2255 h264_qsv_encoder_deps="libmfx"
2256 h264_qsv_encoder_select="qsvenc"
2257 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2258 h264_vaapi_encoder_select="vaapi_encode golomb"
2259 hevc_nvenc_encoder_deps="nvenc"
2260 hevc_qsv_decoder_deps="libmfx"
2261 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2262 hevc_qsv_encoder_deps="libmfx"
2263 hevc_qsv_encoder_select="hevc_ps qsvenc"
2264 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2265 hevc_vaapi_encoder_select="vaapi_encode golomb"
2266 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2267 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2268 mpeg2_mmal_decoder_deps="mmal"
2269 mpeg2_qsv_decoder_deps="libmfx"
2270 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2271 mpeg2_qsv_encoder_deps="libmfx"
2272 mpeg2_qsv_encoder_select="qsvenc"
2273 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2274 mpeg2_vaapi_encoder_select="vaapi_encode"
2275 mpeg4_omx_encoder_deps="omx"
2276 vc1_mmal_decoder_deps="mmal"
2277 vc1_qsv_decoder_deps="libmfx"
2278 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2279 vp8_qsv_decoder_deps="libmfx"
2280 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2281 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2282 vp8_vaapi_encoder_select="vaapi_encode"
2283 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2284 vp9_vaapi_encoder_select="vaapi_encode"
2285
2286 nvenc_h264_encoder_select="h264_nvenc_encoder"
2287 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2288
2289 # parsers
2290 aac_parser_select="adts_header"
2291 h264_parser_select="golomb h264dsp h264parse"
2292 hevc_parser_select="hevc_ps"
2293 mpegaudio_parser_select="mpegaudioheader"
2294 mpegvideo_parser_select="mpegvideo"
2295 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2296 vc1_parser_select="vc1dsp"
2297
2298 # bitstream_filters
2299 aac_adtstoasc_bsf_select="adts_header"
2300 mjpeg2jpeg_bsf_select="jpegtables"
2301
2302 # external libraries
2303 avisynth_deps="LoadLibrary"
2304 avxsynth_deps="libdl"
2305 avisynth_demuxer_deps_any="avisynth avxsynth"
2306 avisynth_demuxer_select="riffdec"
2307 libdcadec_decoder_deps="libdcadec"
2308 libfaac_encoder_deps="libfaac"
2309 libfaac_encoder_select="audio_frame_queue"
2310 libfdk_aac_decoder_deps="libfdk_aac"
2311 libfdk_aac_encoder_deps="libfdk_aac"
2312 libfdk_aac_encoder_select="audio_frame_queue"
2313 libgsm_decoder_deps="libgsm"
2314 libgsm_encoder_deps="libgsm"
2315 libgsm_ms_decoder_deps="libgsm"
2316 libgsm_ms_encoder_deps="libgsm"
2317 libilbc_decoder_deps="libilbc"
2318 libilbc_encoder_deps="libilbc"
2319 libkvazaar_encoder_deps="libkvazaar"
2320 libmp3lame_encoder_deps="libmp3lame"
2321 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2322 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2323 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2324 libopencore_amrnb_encoder_select="audio_frame_queue"
2325 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2326 libopenh264_decoder_deps="libopenh264"
2327 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2328 libopenh264_encoder_deps="libopenh264"
2329 libopenjpeg_decoder_deps="libopenjpeg"
2330 libopenjpeg_encoder_deps="libopenjpeg"
2331 libopus_decoder_deps="libopus"
2332 libopus_encoder_deps="libopus"
2333 libopus_encoder_select="audio_frame_queue"
2334 libschroedinger_decoder_deps="libschroedinger"
2335 libschroedinger_encoder_deps="libschroedinger"
2336 libspeex_decoder_deps="libspeex"
2337 libspeex_encoder_deps="libspeex"
2338 libspeex_encoder_select="audio_frame_queue"
2339 libtheora_encoder_deps="libtheora"
2340 libtwolame_encoder_deps="libtwolame"
2341 libvo_aacenc_encoder_deps="libvo_aacenc"
2342 libvo_aacenc_encoder_select="audio_frame_queue"
2343 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2344 libvorbis_encoder_deps="libvorbis"
2345 libvorbis_encoder_select="audio_frame_queue"
2346 libvpx_vp8_decoder_deps="libvpx"
2347 libvpx_vp8_encoder_deps="libvpx"
2348 libvpx_vp9_decoder_deps="libvpx"
2349 libvpx_vp9_encoder_deps="libvpx"
2350 libwavpack_encoder_deps="libwavpack"
2351 libwavpack_encoder_select="audio_frame_queue"
2352 libwebp_encoder_deps="libwebp"
2353 libx262_encoder_deps="libx262"
2354 libx264_encoder_deps="libx264"
2355 libx265_encoder_deps="libx265"
2356 libxavs_encoder_deps="libxavs"
2357 libxvid_encoder_deps="libxvid mkstemp"
2358
2359 # demuxers / muxers
2360 ac3_demuxer_select="ac3_parser"
2361 asf_demuxer_select="riffdec"
2362 asf_muxer_select="riffenc"
2363 asf_stream_muxer_select="asf_muxer"
2364 avi_demuxer_select="iso_media riffdec"
2365 avi_muxer_select="riffenc"
2366 caf_demuxer_select="iso_media riffdec"
2367 dash_muxer_select="mp4_muxer"
2368 dirac_demuxer_select="dirac_parser"
2369 dv_demuxer_select="dvprofile"
2370 dv_muxer_select="dvprofile"
2371 dxa_demuxer_select="riffdec"
2372 eac3_demuxer_select="ac3_parser"
2373 f4v_muxer_select="mov_muxer"
2374 flac_demuxer_select="flac_parser"
2375 hds_muxer_select="flv_muxer"
2376 hls_muxer_select="mpegts_muxer"
2377 ipod_muxer_select="mov_muxer"
2378 ismv_muxer_select="mov_muxer"
2379 matroska_audio_muxer_select="matroska_muxer"
2380 matroska_demuxer_select="iso_media riffdec"
2381 matroska_demuxer_suggest="bzlib lzo zlib"
2382 matroska_muxer_select="iso_media riffenc"
2383 mmf_muxer_select="riffenc"
2384 mov_demuxer_select="iso_media riffdec"
2385 mov_demuxer_suggest="zlib"
2386 mov_muxer_select="iso_media riffenc rtpenc_chain"
2387 mp3_demuxer_select="mpegaudio_parser"
2388 mp3_muxer_select="mpegaudioheader"
2389 mp4_muxer_select="mov_muxer"
2390 mpegts_demuxer_select="iso_media"
2391 mpegts_muxer_select="adts_muxer latm_muxer"
2392 mpegtsraw_demuxer_select="mpegts_demuxer"
2393 mxf_d10_muxer_select="mxf_muxer"
2394 nut_muxer_select="riffenc"
2395 nuv_demuxer_select="riffdec"
2396 oga_muxer_select="ogg_muxer"
2397 ogg_demuxer_select="dirac_parse"
2398 opus_muxer_select="ogg_muxer"
2399 psp_muxer_select="mov_muxer"
2400 rtp_demuxer_select="sdp_demuxer"
2401 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2402 rtsp_demuxer_select="http_protocol rtpdec"
2403 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2404 sap_demuxer_select="sdp_demuxer"
2405 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2406 sdp_demuxer_select="rtpdec"
2407 smoothstreaming_muxer_select="ismv_muxer"
2408 spdif_demuxer_select="adts_header"
2409 spdif_muxer_select="adts_header"
2410 spx_muxer_select="ogg_muxer"
2411 swf_demuxer_suggest="zlib"
2412 tak_demuxer_select="tak_parser"
2413 tg2_muxer_select="mov_muxer"
2414 tgp_muxer_select="mov_muxer"
2415 w64_demuxer_select="wav_demuxer"
2416 wav_demuxer_select="riffdec"
2417 wav_muxer_select="riffenc"
2418 webm_muxer_select="iso_media riffenc"
2419 wtv_demuxer_select="mpegts_demuxer riffdec"
2420 xmv_demuxer_select="riffdec"
2421 xwma_demuxer_select="riffdec"
2422
2423 # indevs / outdevs
2424 alsa_indev_deps="alsa"
2425 alsa_outdev_deps="alsa"
2426 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2427 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2428 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2429 dv1394_indev_deps="dv1394"
2430 dv1394_indev_select="dv_demuxer"
2431 fbdev_indev_deps="linux_fb_h"
2432 jack_indev_deps="libjack"
2433 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2434 libcdio_indev_deps="libcdio"
2435 libdc1394_indev_deps="libdc1394"
2436 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2437 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2438 pulse_indev_deps="libpulse"
2439 sndio_indev_deps="sndio"
2440 sndio_outdev_deps="sndio"
2441 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2442 vfwcap_indev_deps="vfw32 vfwcap_defines"
2443 xcbgrab_indev_deps="libxcb libxcb_shape"
2444 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2445
2446 # protocols
2447 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2448 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2449 ffrtmpcrypt_protocol_select="tcp_protocol"
2450 ffrtmphttp_protocol_conflict="librtmp_protocol"
2451 ffrtmphttp_protocol_select="http_protocol"
2452 gopher_protocol_select="network"
2453 http_protocol_select="tcp_protocol"
2454 http_protocol_suggest="zlib"
2455 httpproxy_protocol_select="tcp_protocol"
2456 httpproxy_protocol_suggest="zlib"
2457 https_protocol_select="tls_protocol"
2458 https_protocol_suggest="zlib"
2459 icecast_protocol_select="http_protocol"
2460 librtmp_protocol_deps="librtmp"
2461 librtmpe_protocol_deps="librtmp"
2462 librtmps_protocol_deps="librtmp"
2463 librtmpt_protocol_deps="librtmp"
2464 librtmpte_protocol_deps="librtmp"
2465 mmsh_protocol_select="http_protocol"
2466 mmst_protocol_select="network"
2467 rtmp_protocol_conflict="librtmp_protocol"
2468 rtmp_protocol_select="tcp_protocol"
2469 rtmp_protocol_suggest="zlib"
2470 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2471 rtmpe_protocol_suggest="zlib"
2472 rtmps_protocol_conflict="librtmp_protocol"
2473 rtmps_protocol_select="tls_protocol"
2474 rtmps_protocol_suggest="zlib"
2475 rtmpt_protocol_select="ffrtmphttp_protocol"
2476 rtmpt_protocol_suggest="zlib"
2477 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2478 rtmpte_protocol_suggest="zlib"
2479 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2480 rtmpts_protocol_suggest="zlib"
2481 rtp_protocol_select="udp_protocol"
2482 sctp_protocol_deps="struct_sctp_event_subscribe"
2483 sctp_protocol_select="network"
2484 srtp_protocol_select="rtp_protocol srtp"
2485 tcp_protocol_select="network"
2486 tls_protocol_deps_any="gnutls openssl"
2487 tls_protocol_select="tcp_protocol"
2488 udp_protocol_select="network"
2489 unix_protocol_deps="sys_un_h"
2490 unix_protocol_select="network"
2491
2492 # filters
2493 asyncts_filter_deps="avresample"
2494 blackframe_filter_deps="gpl"
2495 boxblur_filter_deps="gpl"
2496 bs2b_filter_deps="libbs2b"
2497 cropdetect_filter_deps="gpl"
2498 deinterlace_qsv_filter_deps="libmfx"
2499 deinterlace_vaapi_filter_deps="vaapi"
2500 delogo_filter_deps="gpl"
2501 drawtext_filter_deps="libfreetype"
2502 drawtext_filter_suggest="libfontconfig"
2503 frei0r_filter_deps="frei0r libdl"
2504 frei0r_src_filter_deps="frei0r libdl"
2505 hdcd_filter_deps="libhdcd"
2506 hqdn3d_filter_deps="gpl"
2507 interlace_filter_deps="gpl"
2508 movie_filter_deps="avcodec avformat"
2509 ocv_filter_deps="libopencv"
2510 resample_filter_deps="avresample"
2511 scale_filter_deps="swscale"
2512 scale_qsv_filter_deps="libmfx"
2513 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2514
2515 # examples
2516 decode_audio_example_deps="avcodec avutil"
2517 decode_video_example_deps="avcodec avutil"
2518 encode_audio_example_deps="avcodec avutil"
2519 encode_video_example_deps="avcodec avutil"
2520 filter_audio_example_deps="avfilter avutil"
2521 metadata_example_deps="avformat avutil"
2522 output_example_deps="avcodec avformat avresample avutil swscale"
2523 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2524 transcode_aac_example_deps="avcodec avformat avresample"
2525
2526 # EXTRALIBS_LIST
2527 cpu_init_extralibs="pthreads_extralibs"
2528 cws2fws_extralibs="zlib_extralibs"
2529
2530 # libraries, in linking order
2531 avcodec_deps="avutil"
2532 avcodec_select="null_bsf"
2533 avdevice_deps="avformat avcodec avutil"
2534 avfilter_deps="avutil"
2535 avformat_deps="avcodec avutil"
2536 avformat_suggest="network"
2537 avresample_deps="avutil"
2538 swscale_deps="avutil"
2539
2540 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2541 avdevice_extralibs="libm_extralibs"
2542 avformat_extralibs="libm_extralibs"
2543 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2544 avresample_extralibs="libm_extralibs"
2545 avutil_extralibs="clock_gettime_extralibs cuda_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2546 swscale_extralibs="libm_extralibs"
2547
2548 # programs
2549 avconv_deps="avcodec avfilter avformat avresample swscale"
2550 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2551                fps_filter null_filter resample_filter scale_filter
2552                trim_filter"
2553 avconv_suggest="psapi shell32"
2554 avplay_deps="avcodec avfilter avformat avresample sdl"
2555 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2556 avplay_suggest="shell32"
2557 avprobe_deps="avcodec avformat"
2558 avprobe_suggest="shell32"
2559
2560 # documentation
2561 pod2man_deps="doc"
2562 texi2html_deps="doc"
2563
2564 # default parameters
2565
2566 logfile="avbuild/config.log"
2567
2568 # installation paths
2569 prefix_default="/usr/local"
2570 bindir_default='${prefix}/bin'
2571 datadir_default='${prefix}/share/avconv'
2572 docdir_default='${prefix}/share/doc/libav'
2573 incdir_default='${prefix}/include'
2574 libdir_default='${prefix}/lib'
2575 mandir_default='${prefix}/share/man'
2576 shlibdir_default="$libdir_default"
2577
2578 # toolchain
2579 ar_default="ar"
2580 cc_default="gcc"
2581 host_cc_default="gcc"
2582 x86asmexe_default="nasm"
2583 ln_s="ln -s -f"
2584 nm_default="nm -g"
2585 pkg_config_default=pkg-config
2586 ranlib="ranlib"
2587 strip="strip"
2588 version_script='--version-script'
2589
2590 # machine
2591 arch_default=$(uname -m)
2592 cpu="generic"
2593 intrinsics="none"
2594
2595 # OS
2596 target_os_default=$(tolower $(uname -s))
2597 host_os=$target_os_default
2598
2599 # configurable options
2600 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2601
2602 enable asm
2603 enable debug
2604 enable doc
2605 enable faan faandct faanidct
2606 enable optimizations
2607 enable safe_bitstream_reader
2608 enable static
2609 enable swscale_alpha
2610 enable valgrind_backtrace
2611
2612 # By default, enable only those hwaccels that have no external dependencies.
2613 enable d3d11va dxva2 vda vdpau
2614
2615 # internal components are enabled by default
2616 enable $EXTRALIBS_LIST
2617
2618 # Avoid external, non-system, libraries getting enabled by dependency resolution
2619 disable $EXTERNAL_LIBRARY_LIST
2620
2621 # build settings
2622 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2623 LIBPREF="lib"
2624 LIBSUF=".a"
2625 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2626 SLIBPREF="lib"
2627 SLIBSUF=".so"
2628 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2629 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2630 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2631 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2632 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2633 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2634 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2635
2636 asflags_filter=echo
2637 cflags_filter=echo
2638 ldflags_filter=echo
2639
2640 AS_C='-c'
2641 AS_O='-o $@'
2642 CC_C='-c'
2643 CC_E='-E -o $@'
2644 CC_O='-o $@'
2645 OBJCC_C='-c'
2646 OBJCC_E='-E -o $@'
2647 OBJCC_O='-o $@'
2648 X86ASM_O='-o $@'
2649 LD_O='-o $@'
2650 LD_LIB='-l%'
2651 LD_PATH='-L'
2652 HOSTCC_C='-c'
2653 HOSTCC_E='-E -o $@'
2654 HOSTCC_O='-o $@'
2655 HOSTLD_O='-o $@'
2656
2657 host_extralibs='-lm'
2658 host_cflags_filter=echo
2659 host_ldflags_filter=echo
2660
2661 target_path='$(CURDIR)'
2662
2663 # since the object filename is not given with the -MM flag, the compiler
2664 # is only able to print the basename, and we must add the path ourselves
2665 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2666 DEPFLAGS='-MM'
2667
2668 mkdir -p avbuild
2669
2670 # find source path
2671 if test -f configure; then
2672     source_path=.
2673 else
2674     source_path=$(cd $(dirname "$0"); pwd)
2675     echo "$source_path" | grep -q '[[:blank:]]' &&
2676         die "Out of tree builds are impossible with whitespace in source path."
2677     test -e "$source_path/config.h" &&
2678         die "Out of tree builds are impossible with config.h in source dir."
2679 fi
2680
2681 for v in "$@"; do
2682     r=${v#*=}
2683     l=${v%"$r"}
2684     r=$(sh_quote "$r")
2685     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2686 done
2687
2688 find_things(){
2689     thing=$1
2690     pattern=$2
2691     file=$source_path/$3
2692     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2693 }
2694
2695 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2696 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2697 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2698 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2699 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2700 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2701 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2702 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2703 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2704
2705 find_things_extern(){
2706     thing=$1
2707     pattern=$2
2708     file=$source_path/$3
2709     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2710 }
2711
2712 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2713 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2714
2715 AVCODEC_COMPONENTS_LIST="
2716     $BSF_LIST
2717     $DECODER_LIST
2718     $ENCODER_LIST
2719     $HWACCEL_LIST
2720     $PARSER_LIST
2721 "
2722
2723 AVDEVICE_COMPONENTS_LIST="
2724     $INDEV_LIST
2725     $OUTDEV_LIST
2726 "
2727
2728 AVFILTER_COMPONENTS_LIST="
2729     $FILTER_LIST
2730 "
2731
2732 AVFORMAT_COMPONENTS_LIST="
2733     $DEMUXER_LIST
2734     $MUXER_LIST
2735     $PROTOCOL_LIST
2736 "
2737
2738 ALL_COMPONENTS="
2739     $AVCODEC_COMPONENTS_LIST
2740     $AVDEVICE_COMPONENTS_LIST
2741     $AVFILTER_COMPONENTS_LIST
2742     $AVFORMAT_COMPONENTS_LIST
2743 "
2744
2745 for n in $COMPONENT_LIST; do
2746     v=$(toupper ${n%s})_LIST
2747     eval enable \$$v
2748     eval ${n}_if_any="\$$v"
2749 done
2750
2751 enable $ARCH_EXT_LIST
2752
2753 die_unknown(){
2754     echo "Unknown option \"$1\"."
2755     echo "See $0 --help for available options."
2756     exit 1
2757 }
2758
2759 print_3_columns() {
2760     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2761 }
2762
2763 show_list() {
2764     suffix=_$1
2765     shift
2766     echo $* | sed s/$suffix//g | print_3_columns
2767     exit 0
2768 }
2769
2770 rand_list(){
2771     IFS=', '
2772     set -- $*
2773     unset IFS
2774     for thing; do
2775         comp=${thing%:*}
2776         prob=${thing#$comp}
2777         prob=${prob#:}
2778         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2779         echo "prob ${prob:-0.5}"
2780         printf '%s\n' $comp
2781     done
2782 }
2783
2784 do_random(){
2785     action=$1
2786     shift
2787     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2788     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2789 }
2790
2791 for opt do
2792     optval="${opt#*=}"
2793     case "$opt" in
2794         --extra-ldflags=*)
2795             add_ldflags $optval
2796         ;;
2797         --extra-ldexeflags=*)
2798             add_ldexeflags $optval
2799         ;;
2800         --extra-libs=*)
2801             add_extralibs $optval
2802         ;;
2803         --disable-devices)
2804             disable $INDEV_LIST $OUTDEV_LIST
2805         ;;
2806         --enable-debug=*)
2807             debuglevel="$optval"
2808         ;;
2809         --disable-programs)
2810             disable $PROGRAM_LIST
2811         ;;
2812         --disable-everything)
2813             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2814         ;;
2815         --disable-all)
2816             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2817             disable $LIBRARY_LIST $PROGRAM_LIST doc
2818         ;;
2819         --enable-random|--disable-random)
2820             action=${opt%%-random}
2821             do_random ${action#--} $COMPONENT_LIST
2822         ;;
2823         --enable-random=*|--disable-random=*)
2824             action=${opt%%-random=*}
2825             do_random ${action#--} $optval
2826         ;;
2827         --enable-*=*|--disable-*=*)
2828             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2829             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2830             eval list=\$$(toupper $thing)_LIST
2831             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2832             $action $(filter "$name" $list)
2833         ;;
2834         --enable-avserver|--disable-avserver*)
2835             warn "avserver has been removed, the ${opt} option is only"\
2836                  "provided for compatibility and will be removed in the future"
2837         ;;
2838         --enable-yasm|--disable-yasm)
2839             warn "The ${opt} option is only provided for compatibility and will be\n"\
2840                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2841             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2842         ;;
2843         --enable-?*|--disable-?*)
2844             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2845             if is_in $option $COMPONENT_LIST; then
2846                 test $action = disable && action=unset
2847                 eval $action \$$(toupper ${option%s})_LIST
2848             elif is_in $option $CMDLINE_SELECT; then
2849                 $action $option
2850             else
2851                 die_unknown $opt
2852             fi
2853         ;;
2854         --list-*)
2855             NAME="${opt#--list-}"
2856             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2857             NAME=${NAME%s}
2858             eval show_list $NAME \$$(toupper $NAME)_LIST
2859         ;;
2860         --help|-h) show_help
2861         ;;
2862         --quiet|-q) quiet=yes
2863         ;;
2864         *)
2865             optname="${opt%%=*}"
2866             optname="${optname#--}"
2867             optname=$(echo "$optname" | sed 's/-/_/g')
2868             if is_in $optname $CMDLINE_SET; then
2869                 eval $optname='$optval'
2870             elif is_in $optname $CMDLINE_APPEND; then
2871                 append $optname "$optval"
2872             else
2873                 die_unknown $opt
2874             fi
2875         ;;
2876     esac
2877 done
2878
2879 for e in $env; do
2880     eval "export $e"
2881 done
2882
2883 disabled logging && logfile=/dev/null
2884
2885 # Die early if licensing-related configure options are incompatible.
2886 die_license_disabled() {
2887     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2888 }
2889
2890 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2891 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2892 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2893
2894 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2895
2896 enabled_all gnutls openssl &&
2897     die "GnuTLS and OpenSSL must not be enabled at the same time."
2898
2899 # Disable all the library-specific components if the library itself
2900 # is disabled, see AVCODEC_LIST and following _LIST variables.
2901
2902 disable_components(){
2903     disabled ${1} && disable $(
2904         eval components="\$$(toupper ${1})_COMPONENTS"
2905         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2906     )
2907 }
2908
2909 map 'disable_components $v' $LIBRARY_LIST
2910
2911 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2912 set >> $logfile
2913
2914 case "$toolchain" in
2915     *-asan)
2916         cc_default="${toolchain%-asan}"
2917         add_cflags  -fsanitize=address
2918         add_ldflags -fsanitize=address
2919     ;;
2920     *-msan)
2921         cc_default="${toolchain%-msan}"
2922         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2923         add_ldflags -fsanitize=memory
2924     ;;
2925     *-tsan)
2926         cc_default="${toolchain%-tsan}"
2927         add_cflags  -fsanitize=thread -fPIE
2928         add_ldflags -fsanitize=thread -pie
2929         case "$toolchain" in
2930             gcc-tsan)
2931                 add_cflags  -fPIC
2932                 add_ldflags -fPIC
2933                 ;;
2934         esac
2935     ;;
2936     *-usan)
2937         cc_default="${toolchain%-usan}"
2938         add_cflags  -fsanitize=undefined
2939         add_ldflags -fsanitize=undefined
2940         case "$toolchain" in
2941             clang-usan)
2942                 add_cflags -O1
2943                 ;;
2944         esac
2945     ;;
2946     valgrind-*)
2947         target_exec_default="valgrind"
2948         case "$toolchain" in
2949             valgrind-massif)
2950                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2951                 ;;
2952             valgrind-memcheck)
2953                 target_exec_args="--track-origins=yes --leak-check=full"
2954                 ;;
2955         esac
2956     ;;
2957     msvc)
2958         # Check whether the current MSVC version needs the C99 converter.
2959         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2960         # support enough of C99 to build libav. Default to the new
2961         # behaviour if the regexp was unable to match anything, since this
2962         # successfully parses the version number of existing supported
2963         # versions that require the converter (MSVC 2010 and 2012).
2964         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2965         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2966             cc_default="cl"
2967         else
2968             cc_default="c99wrap cl"
2969         fi
2970         ld_default="$source_path/compat/windows/mslink"
2971         nm_default="dumpbin -symbols"
2972         ar_default="lib"
2973         case "$arch" in
2974         arm*)
2975             as_default="armasm"
2976             ;;
2977         esac
2978         target_os_default="win32"
2979         # Use a relative path for TMPDIR. This makes sure all the
2980         # ffconf temp files are written with a relative path, avoiding
2981         # issues with msys/win32 path conversion for MSVC parameters
2982         # such as -Fo<file> or -out:<file>.
2983         TMPDIR=.
2984     ;;
2985     icl)
2986         cc_default="icl"
2987         ld_default="xilink"
2988         nm_default="dumpbin -symbols"
2989         ar_default="xilib"
2990         target_os_default="win32"
2991         TMPDIR=.
2992     ;;
2993     gcov)
2994         add_cflags  -fprofile-arcs -ftest-coverage
2995         add_ldflags -fprofile-arcs -ftest-coverage
2996     ;;
2997     llvm-cov)
2998         add_cflags -fprofile-arcs -ftest-coverage
2999         add_ldflags --coverage
3000     ;;
3001     hardened)
3002         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3003         add_cflags   -fno-strict-overflow -fstack-protector-all
3004         add_ldflags  -Wl,-z,relro -Wl,-z,now
3005     ;;
3006     ?*)
3007         die "Unknown toolchain $toolchain"
3008     ;;
3009 esac
3010
3011 test -n "$cross_prefix" && enable cross_compile
3012
3013 if enabled cross_compile; then
3014     test -n "$arch" && test -n "$target_os" ||
3015         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3016 fi
3017
3018 ar_default="${cross_prefix}${ar_default}"
3019 cc_default="${cross_prefix}${cc_default}"
3020 objcc_default="${cross_prefix}${objcc_default}"
3021 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3022 nm_default="${cross_prefix}${nm_default}"
3023 pkg_config_default="${cross_prefix}${pkg_config_default}"
3024 ranlib="${cross_prefix}${ranlib}"
3025 strip="${cross_prefix}${strip}"
3026
3027 sysinclude_default="${sysroot}/usr/include"
3028
3029 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3030 enabled cross_compile || host_cc_default=$cc
3031 set_default host_cc
3032
3033 if ! $pkg_config --version >/dev/null 2>&1; then
3034     warn "$pkg_config not found, library detection may fail."
3035     pkg_config=false
3036 fi
3037
3038 exesuf() {
3039     case $1 in
3040         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3041     esac
3042 }
3043
3044 EXESUF=$(exesuf $target_os)
3045 HOSTEXESUF=$(exesuf $host_os)
3046
3047 # set temporary file name
3048 : ${TMPDIR:=$TEMPDIR}
3049 : ${TMPDIR:=$TMP}
3050 : ${TMPDIR:=/tmp}
3051
3052 if ! check_cmd mktemp -u XXXXXX; then
3053     # simple replacement for missing mktemp
3054     # NOT SAFE FOR GENERAL USE
3055     mktemp(){
3056         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3057         echo "$tmpname"
3058         mkdir "$tmpname"
3059     }
3060 fi
3061
3062 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3063     die "Unable to create temporary directory in $TMPDIR."
3064
3065 tmpfile(){
3066     tmp="${AVTMPDIR}/test"$2
3067     (set -C; exec > $tmp) 2> /dev/null ||
3068         die "Unable to create temporary file in $AVTMPDIR."
3069     eval $1=$tmp
3070 }
3071
3072 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3073 trap 'exit 2' INT
3074
3075 tmpfile TMPASM .asm
3076 tmpfile TMPC   .c
3077 tmpfile TMPE   $EXESUF
3078 tmpfile TMPH   .h
3079 tmpfile TMPO   .o
3080 tmpfile TMPS   .S
3081 tmpfile TMPSH  .sh
3082 tmpfile TMPV   .ver
3083
3084 unset -f mktemp
3085
3086 chmod +x $TMPE
3087
3088 # make sure we can execute files in $TMPDIR
3089 cat > $TMPSH 2>> $logfile <<EOF
3090 #! /bin/sh
3091 EOF
3092 chmod +x $TMPSH >> $logfile 2>&1
3093 if ! $TMPSH >> $logfile 2>&1; then
3094     cat <<EOF
3095 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3096 variable to another directory and make sure that it is not mounted noexec.
3097 EOF
3098     die "Sanity test failed."
3099 fi
3100
3101 armasm_flags(){
3102     for flag; do
3103         case $flag in
3104             # Filter out MSVC cl.exe options from cflags that shouldn't
3105             # be passed to gas-preprocessor
3106             -M[TD]*)                                            ;;
3107             *)                  echo $flag                      ;;
3108         esac
3109    done
3110 }
3111
3112 ccc_flags(){
3113     for flag; do
3114         case $flag in
3115             -std=c99)           echo -c99                       ;;
3116             -mcpu=*)            echo -arch ${flag#*=}           ;;
3117             -mieee)             echo -ieee                      ;;
3118             -O*|-fast)          echo $flag                      ;;
3119             -fno-math-errno)    echo -assume nomath_errno       ;;
3120             -g)                 echo -g3                        ;;
3121             -Wall)              echo -msg_enable level2         ;;
3122             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3123             -Wl,*)              echo $flag                      ;;
3124             -f*|-W*)                                            ;;
3125             *)                  echo $flag                      ;;
3126         esac
3127    done
3128 }
3129
3130 cparser_flags(){
3131     for flag; do
3132         case $flag in
3133             -Wno-switch)             echo -Wno-switch-enum ;;
3134             -Wno-format-zero-length) ;;
3135             -Wdisabled-optimization) ;;
3136             -Wno-pointer-sign)       echo -Wno-other ;;
3137             *)                       echo $flag ;;
3138         esac
3139     done
3140 }
3141
3142 msvc_common_flags(){
3143     for flag; do
3144         case $flag in
3145             # In addition to specifying certain flags under the compiler
3146             # specific filters, they must be specified here as well or else the
3147             # generic catch all at the bottom will print the original flag.
3148             -Wall)                ;;
3149             -Wextra)              ;;
3150             -std=c99)             ;;
3151             # Common flags
3152             -fomit-frame-pointer) ;;
3153             -g)                   echo -Z7 ;;
3154             -fno-math-errno)      ;;
3155             -fno-common)          ;;
3156             -fno-signed-zeros)    ;;
3157             -fPIC)                ;;
3158             -mthumb)              ;;
3159             -march=*)             ;;
3160             -lz)                  echo zlib.lib ;;
3161             -lx264)               echo libx264.lib ;;
3162             -l*)                  echo ${flag#-l}.lib ;;
3163             -L*)                  echo -libpath:${flag#-L} ;;
3164             *)                    echo $flag ;;
3165         esac
3166     done
3167 }
3168
3169 msvc_flags(){
3170     msvc_common_flags "$@"
3171     for flag; do
3172         case $flag in
3173             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3174                                        -wd4554 ;;
3175             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3176                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3177                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3178                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3179         esac
3180     done
3181 }
3182
3183 icl_flags(){
3184     msvc_common_flags "$@"
3185     for flag; do
3186         case $flag in
3187             # Despite what Intel's documentation says -Wall, which is supported
3188             # on Windows, does enable remarks so disable them here.
3189             -Wall)                echo $flag -Qdiag-disable:remark ;;
3190             -std=c99)             echo -Qstd=c99 ;;
3191         esac
3192     done
3193 }
3194
3195 pgi_flags(){
3196     for flag; do
3197         case $flag in
3198             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3199             -fomit-frame-pointer) echo -Mnoframe ;;
3200             -g)                   echo -gopt ;;
3201             *)                    echo $flag ;;
3202         esac
3203     done
3204 }
3205
3206 suncc_flags(){
3207     for flag; do
3208         case $flag in
3209             -march=*|-mcpu=*)
3210                 case "${flag#*=}" in
3211                     native)                   echo -xtarget=native       ;;
3212                     v9|niagara)               echo -xarch=sparc          ;;
3213                     ultrasparc)               echo -xarch=sparcvis       ;;
3214                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3215                     i586|pentium)             echo -xchip=pentium        ;;
3216                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3217                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3218                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3219                     pentium4*)          echo -xtarget=pentium4           ;;
3220                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3221                     *-sse3)             echo -xarch=sse3                 ;;
3222                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3223                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3224                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3225                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3226                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3227                     k8|opteron|athlon64|athlon-fx)
3228                                                echo -xarch=sse2a         ;;
3229                     athlon*)                   echo -xarch=pentium_proa  ;;
3230                 esac
3231                 ;;
3232             -std=c99)             echo -xc99              ;;
3233             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3234             -fPIC)                echo -KPIC -xcode=pic32 ;;
3235             -W*,*)                echo $flag              ;;
3236             -f*-*|-W*|-mimpure-text)                      ;;
3237             -shared)              echo -G                 ;;
3238             *)                    echo $flag              ;;
3239         esac
3240     done
3241 }
3242
3243 tms470_flags(){
3244     for flag; do
3245         case $flag in
3246             -march=*|-mcpu=*)
3247                 case "${flag#*=}" in
3248                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3249                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3250                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3251                     armv6*|arm11*)          echo -mv=6   ;;
3252                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3253                                             echo -mv=5e  ;;
3254                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3255                 esac
3256                 ;;
3257             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3258             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3259             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3260             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3261             -msoft-float)   echo --float_support=vfplib       ;;
3262             -O[0-3]|-mf=*)  echo $flag                        ;;
3263             -g)             echo -g -mn                       ;;
3264             -pds=*)         echo $flag                        ;;
3265             -D*|-I*)        echo $flag                        ;;
3266             --gcc|--abi=*)  echo $flag                        ;;
3267             -me)            echo $flag                        ;;
3268         esac
3269     done
3270 }
3271
3272 probe_cc(){
3273     pfx=$1
3274     _cc=$2
3275
3276     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3277     unset _ld_o _ldflags _ld_lib _ld_path
3278     unset _depflags _DEPCMD _DEPFLAGS
3279     _flags_filter=echo
3280
3281     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3282         _type=llvm_gcc
3283         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3284         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3285         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3286         _cflags_speed='-O3'
3287         _cflags_size='-Os'
3288     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3289         _type=gcc
3290         gcc_version=$($_cc --version | head -n1)
3291         gcc_basever=$($_cc -dumpversion)
3292         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3293         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3294         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3295         if ! $_cc -dumpversion | grep -q '^2\.'; then
3296             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3297         fi
3298         _cflags_speed='-O3'
3299         _cflags_size='-Os'
3300     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3301         _type=icc
3302         _ident=$($_cc --version | head -n1)
3303         _depflags='-MMD'
3304         _cflags_speed='-O3'
3305         _cflags_size='-Os'
3306         _cflags_noopt='-O1'
3307     elif $_cc -v 2>&1 | grep -q xlc; then
3308         _type=xlc
3309         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3310         _cflags_speed='-O5'
3311         _cflags_size='-O5 -qcompact'
3312     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3313         _type=ccc
3314         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3315         _DEPFLAGS='-M'
3316         _cflags_speed='-fast'
3317         _cflags_size='-O1'
3318         _flags_filter=ccc_flags
3319     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3320         test -d "$sysroot" || die "No valid sysroot specified."
3321         _type=armcc
3322         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3323         armcc_conf="$PWD/armcc.conf"
3324         $_cc --arm_linux_configure                 \
3325              --arm_linux_config_file="$armcc_conf" \
3326              --configure_sysroot="$sysroot"        \
3327              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3328              die "Error creating armcc configuration file."
3329         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3330         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3331         as_default="${cross_prefix}gcc"
3332         _depflags='-MMD'
3333         _cflags_speed='-O3'
3334         _cflags_size='-Os'
3335     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3336         _type=tms470
3337         _ident=$($_cc -version | head -n1 | tr -s ' ')
3338         _flags='--gcc --abi=eabi -me'
3339         _cc_e='-ppl -fe=$@'
3340         _cc_o='-fe=$@'
3341         _depflags='-ppa -ppd=$(@:.o=.d)'
3342         _cflags_speed='-O3 -mf=5'
3343         _cflags_size='-O3 -mf=2'
3344         _flags_filter=tms470_flags
3345     elif $_cc -v 2>&1 | grep -q clang; then
3346         _type=clang
3347         _ident=$($_cc --version 2>/dev/null | head -n1)
3348         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3349         _cflags_speed='-O3'
3350         _cflags_size='-Os'
3351     elif $_cc -V 2>&1 | grep -q Sun; then
3352         _type=suncc
3353         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3354         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3355         _DEPFLAGS='-xM1 -xc99'
3356         _ldflags='-std=c99'
3357         _cflags_speed='-O5'
3358         _cflags_size='-O5 -xspace'
3359         _flags_filter=suncc_flags
3360     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3361         _type=pathscale
3362         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3363         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3364         _cflags_speed='-O2'
3365         _cflags_size='-Os'
3366         _flags_filter='filter_out -Wdisabled-optimization'
3367     elif $_cc -v 2>&1 | grep -q Open64; then
3368         _type=open64
3369         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3370         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3371         _cflags_speed='-O2'
3372         _cflags_size='-Os'
3373         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3374     elif $_cc -V 2>&1 | grep -q Portland; then
3375         _type=pgi
3376         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3377         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3378         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3379         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3380         _cflags_noopt="-O1"
3381         _flags_filter=pgi_flags
3382     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3383         _type=armasm
3384         _ident=$($_cc | head -n1)
3385         # 4509: "This form of conditional instruction is deprecated"
3386         _flags="-nologo -ignore 4509"
3387         _flags_filter=armasm_flags
3388     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3389         _type=msvc
3390         _ident=$($_cc 2>&1 | head -n1)
3391         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3392         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3393         _cflags_speed="-O2"
3394         _cflags_size="-O1"
3395         _cflags_noopt="-O1"
3396         if $_cc -nologo- 2>&1 | grep -q Linker; then
3397             _ld_o='-out:$@'
3398         else
3399             _ld_o='-Fe$@'
3400         fi
3401         _cc_o='-Fo$@'
3402         _cc_e='-P -Fi$@'
3403         _flags_filter=msvc_flags
3404         _ld_lib='lib%.a'
3405         _ld_path='-libpath:'
3406         _flags='-nologo'
3407     elif $_cc 2>&1 | grep -q Intel; then
3408         _type=icl
3409         _ident=$($_cc 2>&1 | head -n1)
3410         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3411         # Not only is O3 broken on 13.x+ but it is slower on all previous
3412         # versions (tested) as well.
3413         _cflags_speed="-O2"
3414         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3415         if $_cc 2>&1 | grep -q Linker; then
3416             _ld_o='-out:$@'
3417         else
3418             _ld_o='-Fe$@'
3419         fi
3420         _cc_o='-Fo$@'
3421         _cc_e='-P'
3422         _flags_filter=icl_flags
3423         _ld_lib='lib%.a'
3424         _ld_path='-libpath:'
3425         # -Qdiag-error to make icl error when seeing certain unknown arguments
3426         _flags='-nologo -Qdiag-error:4044,10157'
3427         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3428         # with MSVC which enables it by default.
3429         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3430     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3431         # lld can emulate multiple different linkers; in ms link.exe mode,
3432         # the -? parameter gives the help output which contains an identifyable
3433         # string, while it gives an error in other modes.
3434         _type=lld-link
3435         # The link.exe mode doesn't have a switch for getting the version,
3436         # but we can force it back to gnu mode and get the version from there.
3437         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3438         _ld_o='-out:$@'
3439         _flags_filter=msvc_flags
3440         _ld_lib='lib%.a'
3441         _ld_path='-libpath:'
3442     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3443         _type=cparser
3444         _ident=$($_cc --version | head -n1)
3445         _depflags='-MMD'
3446         _cflags_speed='-O4'
3447         _cflags_size='-O2'
3448         _flags_filter=cparser_flags
3449     fi
3450
3451     eval ${pfx}_type=\$_type
3452     eval ${pfx}_ident=\$_ident
3453 }
3454
3455 set_ccvars(){
3456     eval ${1}_C=\${_cc_c-\${${1}_C}}
3457     eval ${1}_E=\${_cc_e-\${${1}_E}}
3458     eval ${1}_O=\${_cc_o-\${${1}_O}}
3459
3460     if [ -n "$_depflags" ]; then
3461         eval ${1}_DEPFLAGS=\$_depflags
3462     else
3463         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3464         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3465         eval DEP${1}FLAGS=\$_flags
3466     fi
3467 }
3468
3469 probe_cc cc "$cc"
3470 cflags_filter=$_flags_filter
3471 cflags_speed=$_cflags_speed
3472 cflags_size=$_cflags_size
3473 cflags_noopt=$_cflags_noopt
3474 add_cflags $_flags $_cflags
3475 cc_ldflags=$_ldflags
3476 set_ccvars CC
3477
3478 probe_cc hostcc "$host_cc"
3479 host_cflags_filter=$_flags_filter
3480 host_cflags_speed=$_cflags_speed
3481 add_host_cflags  $_flags $_cflags
3482 set_ccvars HOSTCC
3483
3484 test -n "$cc_type" && enable $cc_type ||
3485     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3486
3487 : ${as_default:=$cc}
3488 : ${objcc_default:=$cc}
3489 : ${dep_cc_default:=$cc}
3490 : ${ld_default:=$cc}
3491 : ${host_ld_default:=$host_cc}
3492 set_default ar as objcc dep_cc ld host_ld
3493
3494 probe_cc as "$as"
3495 asflags_filter=$_flags_filter
3496 add_asflags $_flags $_cflags
3497 set_ccvars AS
3498
3499 probe_cc objcc "$objcc"
3500 objcflags_filter=$_flags_filter
3501 add_objcflags $_flags $_cflags
3502 set_ccvars OBJC
3503
3504 probe_cc ld "$ld"
3505 ldflags_filter=$_flags_filter
3506 add_ldflags $_flags $_ldflags
3507 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3508 LD_O=${_ld_o-$LD_O}
3509 LD_LIB=${_ld_lib-$LD_LIB}
3510 LD_PATH=${_ld_path-$LD_PATH}
3511
3512 probe_cc hostld "$host_ld"
3513 host_ldflags_filter=$_flags_filter
3514 add_host_ldflags $_flags $_ldflags
3515 HOSTLD_O=${_ld_o-$HOSTLD_O}
3516
3517 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3518     probe_cc depcc "$dep_cc"
3519     CCDEP=${_DEPCMD:-$DEPCMD}
3520     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3521     DEPCCFLAGS=$_flags
3522 fi
3523
3524 if $ar 2>&1 | grep -q Microsoft; then
3525     arflags="-nologo"
3526     ar_o='-out:$@'
3527 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3528     arflags="rq"
3529     ar_o='$@'
3530 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3531     arflags='-Xany -r -c'
3532     ar_o='$@'
3533 else
3534     arflags="rc"
3535     ar_o='$@'
3536 fi
3537
3538 add_cflags $extra_cflags
3539 add_objcflags $extra_objcflags
3540 add_asflags $extra_cflags
3541
3542 if test -n "$sysroot"; then
3543     case "$cc_type" in
3544         gcc|llvm_gcc|clang)
3545             add_cppflags --sysroot="$sysroot"
3546             add_ldflags --sysroot="$sysroot"
3547         ;;
3548         tms470)
3549             add_cppflags -I"$sysinclude"
3550             add_ldflags  --sysroot="$sysroot"
3551         ;;
3552     esac
3553 fi
3554
3555 if test "$cpu" = host; then
3556     enabled cross_compile &&
3557         die "--cpu=host makes no sense when cross-compiling."
3558
3559     case "$cc_type" in
3560         gcc|llvm_gcc)
3561             check_native(){
3562                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3563                 sed -n "/cc1.*$1=/{
3564                             s/.*$1=\\([^ ]*\\).*/\\1/
3565                             p
3566                             q
3567                         }" $TMPE
3568             }
3569             cpu=$(check_native -march || check_native -mcpu)
3570         ;;
3571     esac
3572
3573     test "${cpu:-host}" = host &&
3574         die "--cpu=host not supported with compiler $cc"
3575 fi
3576
3577 # Deal with common $arch aliases
3578 case "$arch" in
3579     aarch64|arm64)
3580         arch="aarch64"
3581     ;;
3582     arm*)
3583         arch="arm"
3584     ;;
3585     mips*|IP*)
3586         case "$arch" in
3587         *el)
3588             add_cppflags -EL
3589             add_ldflags -EL
3590         ;;
3591         *eb)
3592             add_cppflags -EB
3593             add_ldflags -EB
3594         ;;
3595         esac
3596         arch="mips"
3597     ;;
3598     parisc*|hppa*)
3599         arch="parisc"
3600     ;;
3601     "Power Macintosh"|ppc*|powerpc*)
3602         arch="ppc"
3603     ;;
3604     s390|s390x)
3605         arch="s390"
3606     ;;
3607     sh4|sh)
3608         arch="sh4"
3609     ;;
3610     sun4u|sparc*)
3611         arch="sparc"
3612     ;;
3613     tilegx|tile-gx)
3614         arch="tilegx"
3615     ;;
3616     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3617         arch="x86"
3618     ;;
3619 esac
3620
3621 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3622 enable $arch
3623
3624 # Add processor-specific flags
3625 if enabled aarch64; then
3626
3627     case $cpu in
3628         armv*)
3629             cpuflags="-march=$cpu"
3630         ;;
3631         *)
3632             cpuflags="-mcpu=$cpu"
3633         ;;
3634     esac
3635
3636 elif enabled alpha; then
3637
3638     cpuflags="-mcpu=$cpu"
3639
3640 elif enabled arm; then
3641
3642     check_arm_arch() {
3643         check_cpp_condition stddef.h \
3644             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3645             $cpuflags
3646     }
3647
3648     probe_arm_arch() {
3649         if   check_arm_arch 4;        then echo armv4
3650         elif check_arm_arch 4T;       then echo armv4t
3651         elif check_arm_arch 5;        then echo armv5
3652         elif check_arm_arch 5E;       then echo armv5e
3653         elif check_arm_arch 5T;       then echo armv5t
3654         elif check_arm_arch 5TE;      then echo armv5te
3655         elif check_arm_arch 5TEJ;     then echo armv5te
3656         elif check_arm_arch 6;        then echo armv6
3657         elif check_arm_arch 6J;       then echo armv6j
3658         elif check_arm_arch 6K;       then echo armv6k
3659         elif check_arm_arch 6Z;       then echo armv6z
3660         elif check_arm_arch 6ZK;      then echo armv6zk
3661         elif check_arm_arch 6T2;      then echo armv6t2
3662         elif check_arm_arch 7;        then echo armv7
3663         elif check_arm_arch 7A  7_A;  then echo armv7-a
3664         elif check_arm_arch 7S;       then echo armv7-a
3665         elif check_arm_arch 7R  7_R;  then echo armv7-r
3666         elif check_arm_arch 7M  7_M;  then echo armv7-m
3667         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3668         elif check_arm_arch 8A  8_A;  then echo armv8-a
3669         fi
3670     }
3671
3672     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3673
3674     case $cpu in
3675         armv*)
3676             cpuflags="-march=$cpu"
3677             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3678         ;;
3679         *)
3680             cpuflags="-mcpu=$cpu"
3681             case $cpu in
3682                 cortex-a*)                               subarch=armv7a  ;;
3683                 cortex-r*)                               subarch=armv7r  ;;
3684                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3685                 arm11*)                                  subarch=armv6   ;;
3686                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3687                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3688                 *)                             subarch=$(probe_arm_arch) ;;
3689             esac
3690         ;;
3691     esac
3692
3693     case "$subarch" in
3694         armv5t*)    enable fast_clz                ;;
3695         armv[6-8]*) enable fast_clz fast_unaligned ;;
3696     esac
3697
3698 elif enabled avr32; then
3699
3700     case $cpu in
3701         ap7[02]0[0-2])
3702             subarch="avr32_ap"
3703             cpuflags="-mpart=$cpu"
3704         ;;
3705         ap)
3706             subarch="avr32_ap"
3707             cpuflags="-march=$cpu"
3708         ;;
3709         uc3[ab]*)
3710             subarch="avr32_uc"
3711             cpuflags="-mcpu=$cpu"
3712         ;;
3713         uc)
3714             subarch="avr32_uc"
3715             cpuflags="-march=$cpu"
3716         ;;
3717     esac
3718
3719 elif enabled bfin; then
3720
3721     cpuflags="-mcpu=$cpu"
3722
3723 elif enabled mips; then
3724
3725     cpuflags="-march=$cpu"
3726
3727 elif enabled ppc; then
3728
3729     disable ldbrx
3730
3731     case $(tolower $cpu) in
3732         601|ppc601|powerpc601)
3733             cpuflags="-mcpu=601"
3734             disable altivec
3735         ;;
3736         603*|ppc603*|powerpc603*)
3737             cpuflags="-mcpu=603"
3738             disable altivec
3739         ;;
3740         604*|ppc604*|powerpc604*)
3741             cpuflags="-mcpu=604"
3742             disable altivec
3743         ;;
3744         g3|75*|ppc75*|powerpc75*)
3745             cpuflags="-mcpu=750"
3746             disable altivec
3747         ;;
3748         g4|745*|ppc745*|powerpc745*)
3749             cpuflags="-mcpu=7450"
3750             disable vsx
3751         ;;
3752         74*|ppc74*|powerpc74*)
3753             cpuflags="-mcpu=7400"
3754             disable vsx
3755         ;;
3756         g5|970|ppc970|powerpc970)
3757             cpuflags="-mcpu=970"
3758             disable vsx
3759         ;;
3760         power[3-6]*)
3761             cpuflags="-mcpu=$cpu"
3762             disable vsx
3763         ;;
3764         power[7-8]*)
3765             cpuflags="-mcpu=$cpu"
3766             enable ldbrx
3767         ;;
3768         cell)
3769             cpuflags="-mcpu=cell"
3770             enable ldbrx
3771             disable vsx
3772         ;;
3773         e500mc)
3774             cpuflags="-mcpu=e500mc"
3775             disable altivec
3776         ;;
3777         e500v2)
3778             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3779             disable altivec
3780             disable dcbzl
3781         ;;
3782         e500)
3783             cpuflags="-mcpu=8540 -mhard-float"
3784             disable altivec
3785             disable dcbzl
3786         ;;
3787     esac
3788
3789 elif enabled sparc; then
3790
3791     case $cpu in
3792         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3793             cpuflags="-mcpu=$cpu"
3794         ;;
3795         ultrasparc*|niagara[234])
3796             cpuflags="-mcpu=$cpu"
3797         ;;
3798     esac
3799
3800 elif enabled x86; then
3801
3802     case $cpu in
3803         i[345]86|pentium)
3804             cpuflags="-march=$cpu"
3805             disable i686
3806             disable mmx
3807         ;;
3808         # targets that do NOT support nopl and conditional mov (cmov)
3809         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3810             cpuflags="-march=$cpu"
3811             disable i686
3812         ;;
3813         # targets that do support nopl and conditional mov (cmov)
3814         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3815             cpuflags="-march=$cpu"
3816             enable i686
3817             enable fast_cmov
3818         ;;
3819         # targets that do support conditional mov but on which it's slow
3820         pentium4|pentium4m|prescott|nocona)
3821             cpuflags="-march=$cpu"
3822             enable i686
3823             disable fast_cmov
3824         ;;
3825     esac
3826
3827 fi
3828
3829 if [ "$cpu" != generic ]; then
3830     add_cflags  $cpuflags
3831     add_asflags $cpuflags
3832     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3833 fi
3834
3835 # compiler sanity check
3836 check_exec <<EOF
3837 int main(void){ return 0; }
3838 EOF
3839 if test "$?" != 0; then
3840     echo "$cc is unable to create an executable file."
3841     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3842         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3843         echo "Only do this if you know what cross compiling means."
3844     fi
3845     die "C compiler test failed."
3846 fi
3847
3848 add_cppflags -D_ISOC99_SOURCE
3849
3850 # some compilers silently accept -std=c11, so we also need to check that the
3851 # version macro is defined properly
3852 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3853     add_cflags -std=c11 ||
3854     check_cflags -std=c99
3855
3856 check_cppflags -D_FILE_OFFSET_BITS=64
3857 check_cppflags -D_LARGEFILE_SOURCE
3858
3859 add_host_cppflags -D_ISOC99_SOURCE
3860 check_host_cflags -std=c99
3861 check_host_cflags -Wall
3862 check_host_cflags $host_cflags_speed
3863
3864 check_64bit(){
3865     arch32=$1
3866     arch64=$2
3867     expr=$3
3868     check_code cc "" "int test[2*($expr) - 1]" &&
3869         subarch=$arch64 || subarch=$arch32
3870 }
3871
3872 case "$arch" in
3873     aarch64|alpha|ia64)
3874         spic=$shared
3875     ;;
3876     mips)
3877         check_64bit mips mips64 '_MIPS_SIM > 1'
3878         spic=$shared
3879     ;;
3880     parisc)
3881         check_64bit parisc parisc64 'sizeof(void *) > 4'
3882         spic=$shared
3883     ;;
3884     ppc)
3885         check_64bit ppc ppc64 'sizeof(void *) > 4'
3886         spic=$shared
3887     ;;
3888     s390)
3889         check_64bit s390 s390x 'sizeof(void *) > 4'
3890         spic=$shared
3891     ;;
3892     sparc)
3893         check_64bit sparc sparc64 'sizeof(void *) > 4'
3894         spic=$shared
3895     ;;
3896     x86)
3897         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3898         if test "$subarch" = "x86_64"; then
3899             spic=$shared
3900         fi
3901     ;;
3902 esac
3903
3904 enable $subarch
3905 enabled spic && enable_weak pic
3906
3907 enabled x86_64 && objformat=elf64 || objformat="elf32"
3908
3909 # OS specific
3910 case $target_os in
3911     aix)
3912         SHFLAGS=-shared
3913         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3914         enabled shared && add_ldflags -Wl,-brtl
3915         ;;
3916     android)
3917         disable symver
3918         enable section_data_rel_ro
3919         SLIB_INSTALL_NAME='$(SLIBNAME)'
3920         SLIB_INSTALL_LINKS=
3921         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3922         ;;
3923     haiku)
3924         prefix_default="/boot/common"
3925         network_extralibs="-lnetwork"
3926         host_extralibs=
3927         ;;
3928     sunos)
3929         SHFLAGS='-shared -Wl,-h,$$(@F)'
3930         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3931         network_extralibs="-lsocket -lnsl"
3932         # When using suncc to build, the Solaris linker will mark
3933         # an executable with each instruction set encountered by
3934         # the Solaris assembler.  As our libraries contain their own
3935         # guards for processor-specific code, instead suppress
3936         # generation of the HWCAPS ELF section on Solaris x86 only.
3937         enabled_all suncc x86 &&
3938             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3939             add_ldflags -Wl,-M,mapfile
3940         nm_default='nm -P -g'
3941         version_script='-M'
3942         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3943         ;;
3944     netbsd)
3945         disable symver
3946         oss_indev_extralibs="-lossaudio"
3947         oss_outdev_extralibs="-lossaudio"
3948         ;;
3949     openbsd|bitrig)
3950         disable symver
3951         SHFLAGS='-shared'
3952         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3953         SLIB_INSTALL_LINKS=
3954         oss_indev_extralibs="-lossaudio"
3955         oss_outdev_extralibs="-lossaudio"
3956         ;;
3957     dragonfly)
3958         disable symver
3959         ;;
3960     freebsd)
3961         ;;
3962     bsd/os)
3963         add_extralibs -lpoll -lgnugetopt
3964         ;;
3965     darwin)
3966         enabled ppc && add_asflags -force_cpusubtype_ALL
3967         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3968         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3969         add_ldflags -Wl,-dynamic,-search_paths_first
3970         check_cflags -Werror=partial-availability
3971         SLIBSUF=".dylib"
3972         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3973         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3974         enabled x86_64 && objformat="macho64" || objformat="macho32"
3975         enabled_any pic shared ||
3976             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3977         check_header dispatch/dispatch.h &&
3978             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3979         ;;
3980     msys*)
3981         die "Native MSYS builds are discouraged, please use the MINGW environment."
3982         ;;
3983     mingw32*|mingw64*)
3984         if test $target_os = "mingw32ce"; then
3985             disable network
3986         else
3987             target_os=mingw32
3988         fi
3989         LIBTARGET=i386
3990         if enabled x86_64; then
3991             LIBTARGET="i386:x86-64"
3992         elif enabled arm; then
3993             LIBTARGET=arm-wince
3994         fi
3995         check_ldflags -Wl,--nxcompat
3996         check_ldflags -Wl,--dynamicbase
3997         shlibdir_default="$bindir_default"
3998         SLIBPREF=""
3999         SLIBSUF=".dll"
4000         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4001         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4002         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4003         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4004         SLIB_INSTALL_LINKS=
4005         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4006         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4007         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4008         enabled x86_64 && objformat="win64" || objformat="win32"
4009         dlltool="${cross_prefix}dlltool"
4010         ranlib=:
4011         enable dos_paths
4012         ;;
4013     win32|win64)
4014         disable symver
4015         if enabled shared; then
4016             # Link to the import library instead of the normal static library
4017             # for shared libs.
4018             LD_LIB='%.lib'
4019             # Cannot build both shared and static libs with MSVC or icl.
4020             disable static
4021         fi
4022         shlibdir_default="$bindir_default"
4023         SLIBPREF=""
4024         SLIBSUF=".dll"
4025         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4026         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4027         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4028         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4029         SLIB_INSTALL_LINKS=
4030         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4031         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4032         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4033         enabled x86_64 && objformat="win64" || objformat="win32"
4034         ranlib=:
4035         enable dos_paths
4036         ;;
4037     cygwin*)
4038         target_os=cygwin
4039         shlibdir_default="$bindir_default"
4040         SLIBPREF="cyg"
4041         SLIBSUF=".dll"
4042         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4043         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4044         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4045         SLIB_INSTALL_LINKS=
4046         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4047         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4048         enabled x86_64 && objformat="win64" || objformat="win32"
4049         enable dos_paths
4050         ;;
4051     *-dos|freedos|opendos)
4052         network_extralibs="-lsocket"
4053         objformat="coff"
4054         enable dos_paths
4055         add_cppflags -U__STRICT_ANSI__
4056         ;;
4057     linux)
4058         enable dv1394
4059         enable section_data_rel_ro
4060         ;;
4061     irix*)
4062         target_os=irix
4063         ranlib="echo ignoring ranlib"
4064         ;;
4065     os/2*)
4066         ln_s="cp -f"
4067         objformat="aout"
4068         add_cppflags -D_GNU_SOURCE
4069         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4070         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4071         LIBSUF="_s.a"
4072         SLIBPREF=""
4073         SLIBSUF=".dll"
4074         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4075         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4076         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4077             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4078             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4079             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4080             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4081         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4082             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4083         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4084         enable dos_paths
4085         ;;
4086     gnu/kfreebsd)
4087         add_cppflags -D_BSD_SOURCE
4088         ;;
4089     gnu)
4090         ;;
4091     qnx)
4092         add_cppflags -D_QNX_SOURCE
4093         network_extralibs="-lsocket"
4094         ;;
4095     symbian)
4096         SLIBSUF=".dll"
4097         enable dos_paths
4098         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4099         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4100         add_ldflags -Wl,--target1-abs,--no-undefined \
4101                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4102                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4103         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4104                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4105                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4106         ;;
4107     osf1)
4108         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4109         ;;
4110     minix)
4111         ;;
4112     none)
4113         ;;
4114     *)
4115         die "Unknown OS '$target_os'."
4116         ;;
4117 esac
4118
4119 # determine libc flavour
4120
4121 probe_libc(){
4122     pfx=$1
4123     pfx_no_=${pfx%_}
4124     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4125     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4126         eval ${pfx}libc_type=uclibc
4127         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4128     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4129         eval ${pfx}libc_type=glibc
4130         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4131     # MinGW headers can be installed on Cygwin, so check for newlib first.
4132     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4133         eval ${pfx}libc_type=newlib
4134         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4135     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4136     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4137         eval ${pfx}libc_type=mingw64
4138         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4139         eval test \$${pfx_no_}cc_type = "gcc" &&
4140             add_${pfx}cppflags -D__printf__=__gnu_printf__
4141     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4142          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4143         eval ${pfx}libc_type=mingw32
4144         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4145             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4146             die "ERROR: MinGW32 runtime version must be >= 3.15."
4147         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4148         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4149             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4150         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4151             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4152         eval test \$${pfx_no_}cc_type = "gcc" &&
4153             add_${pfx}cppflags -D__printf__=__gnu_printf__
4154     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4155         eval ${pfx}libc_type=msvcrt
4156         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4157             if [ "$pfx" = host_ ]; then
4158                 add_host_cppflags -Dsnprintf=_snprintf
4159             else
4160                 add_compat strtod.o strtod=avpriv_strtod
4161                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4162                                              _snprintf=avpriv_snprintf  \
4163                                              vsnprintf=avpriv_vsnprintf
4164             fi
4165         fi
4166         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4167         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4168         # 0x601 by default unless something else is set by the user.
4169         # This can easily lead to us detecting functions only present
4170         # in such new versions and producing binaries requiring windows 7.0.
4171         # Therefore explicitly set the default to XP unless the user has
4172         # set something else on the command line.
4173         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4174         # family. For these cases, configure is free to use any functions
4175         # found in the SDK headers by default. (Alternatively, we could force
4176         # _WIN32_WINNT to 0x0602 in that case.)
4177         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4178             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4179 #ifdef WINAPI_FAMILY
4180 #include <winapifamily.h>
4181 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4182 #error not desktop
4183 #endif
4184 #endif
4185 EOF
4186         if [ "$pfx" = "" ]; then
4187             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4188         fi
4189     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4190         eval ${pfx}libc_type=klibc
4191     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4192         eval ${pfx}libc_type=bionic
4193     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4194         eval ${pfx}libc_type=solaris
4195         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4196     else
4197         eval ${pfx}libc_type=default
4198         add_${pfx}cppflags -D_DEFAULT_SOURCE
4199     fi
4200 }
4201
4202 probe_libc
4203 test -n "$libc_type" && enable libc_$libc_type
4204 probe_libc host_
4205 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4206
4207 # hacks for compiler/libc/os combinations
4208
4209 case $libc_type in
4210     bionic)
4211         add_compat strtod.o strtod=avpriv_strtod
4212         ;;
4213     glibc)
4214         if enabled tms470; then
4215             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4216             add_cppflags -D__USER_LABEL_PREFIX__=
4217             add_cppflags -D__builtin_memset=memset
4218             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4219             add_cflags   -pds=48    # incompatible redefinition of macro
4220         elif enabled ccc; then
4221             add_ldflags -Wl,-z,now  # calls to libots crash without this
4222         fi
4223         ;;
4224 esac
4225
4226 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4227     add_cppflags '-I\$(SRC_PATH)/compat/float'
4228
4229 esc(){
4230     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4231 }
4232
4233 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4234
4235 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4236
4237 set_default $PATHS_LIST
4238 set_default nm
4239
4240 # we need to build at least one lib type
4241 if ! enabled_any static shared; then
4242     cat <<EOF
4243 At least one library type must be built.
4244 Specify --enable-static to build the static libraries or --enable-shared to
4245 build the shared libraries as well. To only build the shared libraries specify
4246 --disable-static in addition to --enable-shared.
4247 EOF
4248     exit 1
4249 fi
4250
4251 disabled optimizations || check_cflags -fomit-frame-pointer
4252
4253 enable_weak_pic() {
4254     disabled pic && return
4255     enable pic
4256     add_cppflags -DPIC
4257     case "$target_os" in
4258     mingw*|cygwin*)
4259         ;;
4260     *)
4261         add_cflags -fPIC
4262         ;;
4263     esac
4264     add_asflags  -fPIC
4265 }
4266
4267 enabled pic && enable_weak_pic
4268
4269 check_cc <<EOF || die "Symbol mangling check failed."
4270 int ff_extern;
4271 EOF
4272 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4273 extern_prefix=${sym%%ff_extern*}
4274
4275 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4276
4277 _restrict=
4278 for restrict_keyword in restrict __restrict__ __restrict; do
4279     check_cc <<EOF && _restrict=$restrict_keyword && break
4280 void foo(char * $restrict_keyword p);
4281 EOF
4282 done
4283
4284 check_cc <<EOF && enable pragma_deprecated
4285 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4286 EOF
4287
4288 check_cc <<EOF && enable attribute_packed
4289 struct { int x; } __attribute__((packed)) x;
4290 EOF
4291
4292 check_cc <<EOF && enable attribute_may_alias
4293 union { int x; } __attribute__((may_alias)) x;
4294 EOF
4295
4296 check_cc <<EOF || die "endian test failed"
4297 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4298 EOF
4299 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4300
4301 check_gas() {
4302     log "check_gas using '$as' as AS"
4303     # :vararg is used on aarch64, arm and ppc altivec
4304     check_as <<EOF || return 1
4305 .macro m n, y:vararg=0
4306 \n: .int \y
4307 .endm
4308 m x
4309 EOF
4310     # .altmacro is only used in arm asm
4311     ! enabled arm || check_as <<EOF || return 1
4312 .altmacro
4313 EOF
4314     enable gnu_as
4315     return 0
4316 }
4317
4318 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4319     nogas=:
4320     enabled_any arm aarch64 && nogas=die
4321     enabled_all ppc altivec && nogas=warn
4322     as_noop=-v
4323
4324     case $as_type in
4325         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4326         gcc)  gaspp_as_type=gas ;;
4327         *)    gaspp_as_type=$as_type ;;
4328     esac
4329
4330     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4331
4332     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4333         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4334
4335     if ! check_gas ; then
4336         as=${gas:=$as}
4337         check_gas || \
4338             $nogas "GNU assembler not found, install/update gas-preprocessor"
4339     fi
4340
4341     check_as <<EOF && enable as_func
4342 .func test
4343 .endfunc
4344 EOF
4345 fi
4346
4347 check_inline_asm inline_asm_labels '"1:\n"'
4348
4349 if enabled aarch64; then
4350     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4351     # internal assembler in clang 3.3 does not support this instruction
4352     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4353     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4354
4355     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4356
4357 elif enabled alpha; then
4358
4359     check_cflags -mieee
4360
4361 elif enabled arm; then
4362
4363     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4364     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4365     enabled thumb && check_cflags -mthumb || check_cflags -marm
4366
4367     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4368         enable vfp_args
4369     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4370         enable vfp_args
4371     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4372         case "${cross_prefix:-$cc}" in
4373             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4374             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4375 __asm__ (".eabi_attribute 28, 1");
4376 int main(void) { return 0; }
4377 EOF
4378         esac
4379         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4380     fi
4381
4382     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4383     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4384     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4385     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4386     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4387     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4388
4389     [ $target_os = linux ] || [ $target_os = android ] ||
4390         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4391             $ARCH_EXT_LIST_ARM
4392
4393     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4394
4395     check_as <<EOF && enable as_arch_directive
4396 .arch armv7-a
4397 EOF
4398     check_as <<EOF && enable as_fpu_directive
4399 .fpu neon
4400 EOF
4401
4402     # llvm's integrated assembler supports .object_arch from llvm 3.5
4403     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4404         check_as <<EOF && enable as_object_arch
4405 .object_arch armv4
4406 EOF
4407
4408     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4409
4410 elif enabled mips; then
4411
4412     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4413
4414     # make sure that only an instruction set is enabled
4415     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4416
4417     if enabled mips64; then
4418         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4419             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4420                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4421     else
4422         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4423             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4424                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4425     fi
4426
4427 elif enabled parisc; then
4428
4429     if enabled gcc; then
4430         case $($cc -dumpversion) in
4431             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4432         esac
4433     fi
4434
4435 elif enabled ppc; then
4436
4437     enable local_aligned_8 local_aligned_16 local_aligned_32
4438
4439     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4440     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4441     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4442     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4443
4444     if enabled altivec; then
4445         check_cflags -maltivec -mabi=altivec
4446
4447         # check if our compiler supports Motorola AltiVec C API
4448         check_cc <<EOF || disable altivec
4449 #include <altivec.h>
4450 int main(void) {
4451     vector signed int v1 = (vector signed int) { 0 };
4452     vector signed int v2 = (vector signed int) { 1 };
4453     v1 = vec_add(v1, v2);
4454     return 0;
4455 }
4456 EOF
4457
4458         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4459     fi
4460
4461     if enabled vsx; then
4462         check_cflags -mvsx &&
4463         check_cc <<EOF || disable vsx
4464 #include <altivec.h>
4465 int main(void) {
4466     int v[4] = { 0 };
4467     vector signed int v1 = vec_vsx_ld(0, v);
4468     return 0;
4469 }
4470 EOF
4471     fi
4472
4473     if enabled power8; then
4474         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4475     fi
4476
4477 elif enabled x86; then
4478
4479     check_builtin rdtsc    intrin.h   "__rdtsc()"
4480     check_builtin mm_empty mmintrin.h "_mm_empty()"
4481
4482     enable local_aligned_8 local_aligned_16 local_aligned_32
4483
4484     # check whether EBP is available on x86
4485     # As 'i' is stored on the stack, this program will crash
4486     # if the base pointer is used to access it because the
4487     # base pointer is cleared in the inline assembly code.
4488     check_exec_crash <<EOF && enable ebp_available
4489 volatile int i=0;
4490 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4491 return i;
4492 EOF
4493
4494     # check whether EBX is available on x86
4495     check_inline_asm ebx_available '""::"b"(0)' &&
4496         check_inline_asm ebx_available '"":::"%ebx"'
4497
4498     # check whether xmm clobbers are supported
4499     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4500
4501     # check whether binutils is new enough to compile SSSE3/MMXEXT
4502     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4503     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4504
4505     probe_x86asm(){
4506         x86asmexe_probe=$1
4507         if check_cmd $x86asmexe_probe -v; then
4508             x86asmexe=$x86asmexe_probe
4509             x86asm_type=nasm
4510             x86asm_debug="-g -F dwarf"
4511             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4512         elif check_cmd $x86asmexe_probe --version; then
4513             x86asmexe=$x86asmexe_probe
4514             x86asm_type=yasm
4515             x86asm_debug="-g dwarf2"
4516             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4517         fi
4518         check_x86asm "movbe ecx, [5]" && enable x86asm
4519     }
4520
4521     if ! disabled_any asm mmx x86asm; then
4522         disable x86asm
4523         for program in $x86asmexe nasm yasm; do
4524             probe_x86asm $program && break
4525         done
4526         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4527         X86ASMFLAGS="-f $objformat"
4528         enabled pic               && append X86ASMFLAGS "-DPIC"
4529         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4530         case "$objformat" in
4531             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4532         esac
4533
4534         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4535         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4536         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4537         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4538         check_x86asm "CPU amdnop"                      || disable cpunop
4539     fi
4540
4541     case "$cpu" in
4542         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4543             disable fast_clz
4544         ;;
4545     esac
4546
4547 fi
4548
4549 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4550
4551 check_ldflags -Wl,--as-needed
4552
4553 if ! disabled network; then
4554     check_func getaddrinfo $network_extralibs
4555     check_func inet_aton $network_extralibs
4556
4557     check_type netdb.h "struct addrinfo"
4558     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4559     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4560     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4561     check_type poll.h "struct pollfd"
4562     check_type netinet/sctp.h "struct sctp_event_subscribe"
4563     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4564     check_type netinet/in.h "struct sockaddr_in6"
4565     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4566     check_type "sys/types.h sys/socket.h" socklen_t
4567
4568     # Prefer arpa/inet.h over winsock2
4569     if check_header arpa/inet.h ; then
4570         check_func closesocket
4571     elif check_header winsock2.h ; then
4572         check_func_headers winsock2.h closesocket -lws2 &&
4573             network_extralibs="-lws2" ||
4574         { check_func_headers winsock2.h closesocket -lws2_32 &&
4575             network_extralibs="-lws2_32"; } || disable winsock2_h network
4576         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4577
4578         check_type ws2tcpip.h socklen_t
4579         check_type ws2tcpip.h "struct addrinfo"
4580         check_type ws2tcpip.h "struct group_source_req"
4581         check_type ws2tcpip.h "struct ip_mreq_source"
4582         check_type ws2tcpip.h "struct ipv6_mreq"
4583         check_type winsock2.h "struct pollfd"
4584         check_struct winsock2.h "struct sockaddr" sa_len
4585         check_type ws2tcpip.h "struct sockaddr_in6"
4586         check_type ws2tcpip.h "struct sockaddr_storage"
4587     else
4588         disable network
4589     fi
4590 fi
4591
4592 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4593 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4594 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4595 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4596
4597 case "$custom_allocator" in
4598     jemalloc)
4599         # jemalloc by default does not use a prefix
4600         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4601     ;;
4602     tcmalloc)
4603         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4604         malloc_prefix=tc_
4605     ;;
4606 esac
4607
4608 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4609 check_func  ${malloc_prefix}memalign            && enable memalign
4610 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4611
4612 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4613     { check_lib clock_gettime time.h clock_gettime ||
4614       check_lib clock_gettime time.h clock_gettime -lrt; }
4615
4616 check_func  fcntl
4617 check_func  fork
4618 check_func  gethrtime
4619 check_func  getopt
4620 check_func  getrusage
4621 check_func  gettimeofday
4622 check_func  gmtime_r
4623 check_func  isatty
4624 check_func  localtime_r
4625 check_func  mach_absolute_time
4626 check_func  mkstemp
4627 check_func  mmap
4628 check_func  mprotect
4629 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4630 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4631 check_func  sched_getaffinity
4632 check_func  setrlimit
4633 check_func  strerror_r
4634 check_func  sysconf
4635 check_func  sysctl
4636 check_func  usleep
4637
4638 check_func_headers io.h setmode
4639 check_func_headers stdlib.h getenv
4640
4641 check_func_headers windows.h GetProcessAffinityMask
4642 check_func_headers windows.h GetProcessTimes
4643 check_func_headers windows.h GetSystemTimeAsFileTime
4644 check_func_headers windows.h LoadLibrary
4645 check_func_headers windows.h MapViewOfFile
4646 check_func_headers windows.h SetConsoleTextAttribute
4647 check_func_headers windows.h Sleep
4648 check_func_headers windows.h VirtualAlloc
4649 check_struct windows.h "CONDITION_VARIABLE" Ptr
4650
4651 check_header d3d11.h
4652 check_header direct.h
4653 check_header dlfcn.h
4654 check_header dxva.h
4655 check_header dxva2api.h
4656 check_header io.h
4657 check_header mach/mach_time.h
4658 check_header malloc.h
4659 check_header poll.h
4660 check_header sys/mman.h
4661 check_header sys/param.h
4662 check_header sys/resource.h
4663 check_header sys/select.h
4664 check_header sys/time.h
4665 check_header sys/un.h
4666 check_header unistd.h
4667 check_header valgrind/valgrind.h
4668 check_header VideoDecodeAcceleration/VDADecoder.h
4669 check_header windows.h
4670
4671 # it seems there are versions of clang in some distros that try to use the
4672 # gcc headers, which explodes for stdatomic
4673 # so we also check that atomics actually work here
4674 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4675
4676 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4677 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4678 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4679 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4680
4681 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4682
4683 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4684 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4685 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4686
4687 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4688 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4689 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4690 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4691 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4692 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4693 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4694 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4695 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4696
4697 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4698
4699 if ! disabled w32threads && ! enabled pthreads; then
4700     check_lib w32threads "windows.h process.h" _beginthreadex
4701 fi
4702
4703 # check for some common methods of building with pthread support
4704 # do this before the optional library checks as some of them require pthreads
4705 if ! disabled pthreads && ! enabled w32threads; then
4706     if check_lib pthreads pthread.h pthread_join -pthread; then
4707         add_cflags -pthread
4708     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4709         add_cflags -pthreads
4710     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4711         :
4712     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4713         :
4714     elif check_func pthread_join; then
4715         enable pthreads
4716     fi
4717 fi
4718
4719 enabled pthreads &&
4720     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4721
4722 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4723 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4724
4725 # On some systems dynamic loading requires no extra linker flags
4726 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4727
4728 check_lib libm math.h sin -lm
4729
4730 atan2f_args=2
4731 ldexpf_args=2
4732 powf_args=2
4733
4734 for func in $MATH_FUNCS; do
4735     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4736 done
4737
4738 # these are off by default, so fail if requested and not available
4739 enabled avisynth          && require_header avisynth/avisynth_c.h
4740 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4741 enabled cuda              && require cuda cuda.h cuInit -lcuda
4742 enabled frei0r            && require_header frei0r.h
4743 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4744 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4745 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4746 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4747 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4748 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4749 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4750 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4751 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4752                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4753                                done || die "ERROR: libgsm not found"; }
4754 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4755 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4756 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4757 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4758 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4759 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4760 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4761 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4762 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4763 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4764 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4765                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4766 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4767 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4768 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4769 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4770 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4771 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4772 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4773 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4774 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4775 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4776 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4777 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4778                              { enabled libvpx_vp8_decoder &&
4779                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4780                                enabled libvpx_vp8_encoder &&
4781                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4782                                enabled libvpx_vp9_decoder &&
4783                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4784                                enabled libvpx_vp9_encoder &&
4785                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4786                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4787                                    die "libvpx enabled but no supported decoders/encoders found"
4788                              }
4789 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4790 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4791 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4792                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4793                              { check_cpp_condition x264.h "X264_MPEG2" &&
4794                                enable libx262; }
4795 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4796                              require_cpp_condition x265.h "X265_BUILD >= 57"
4797 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4798 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4799 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4800                                { ! enabled cross_compile &&
4801                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4802                                  add_ldflags -L/opt/vc/lib/ &&
4803                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4804                                die "ERROR: mmal not found" &&
4805                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4806 enabled omx               && require_header OMX_Core.h
4807 enabled omx_rpi           && { check_header OMX_Core.h ||
4808                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4809                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4810 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4811                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4812                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4813                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4814                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4815                                die "ERROR: openssl not found"; }
4816
4817 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4818
4819 if enabled nvenc; then
4820     require_header nvEncodeAPI.h
4821     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4822 fi
4823
4824 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4825 if enabled avplay; then
4826     CFLAGS_SAVE=$CFLAGS
4827     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4828     sdl_cflags=$pkg_cflags
4829     CFLAGS=$CFLAGS_SAVE
4830 fi
4831
4832 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man