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Merge "build/make/Android.mk: support TARGET_ARCH_ABI=x86_64"
[libvpx] / configure
1 #!/bin/sh
2 ##
3 ##  configure
4 ##
5 ##  This script is the front-end to the build system. It provides a similar
6 ##  interface to standard configure scripts with some extra bits for dealing
7 ##  with toolchains that differ from the standard POSIX interface and
8 ##  for extracting subsets of the source tree. In theory, reusable parts
9 ##  of this script were intended to live in build/make/configure.sh,
10 ##  but in practice, the line is pretty blurry.
11 ##
12 ##  This build system is based in part on the FFmpeg configure script.
13 ##
14
15 #source_path="`dirname \"$0\"`"
16 source_path=${0%/*}
17 . "${source_path}/build/make/configure.sh"
18
19 show_help(){
20     show_help_pre
21     cat << EOF
22 Advanced options:
23   ${toggle_libs}                  libraries
24   ${toggle_examples}              examples
25   ${toggle_docs}                  documentation
26   ${toggle_unit_tests}            unit tests
27   ${toggle_decode_perf_tests}     build decoder perf tests with unit tests
28   ${toggle_encode_perf_tests}     build encoder perf tests with unit tests
29   --cpu=CPU                       tune for the specified CPU (ARM: cortex-a8, X86: sse3)
30   --libc=PATH                     path to alternate libc
31   --size-limit=WxH                max size to allow in the decoder
32   --as={yasm|nasm|auto}           use specified assembler [auto, yasm preferred]
33   --sdk-path=PATH                 path to root of sdk (android builds only)
34   ${toggle_codec_srcs}            in/exclude codec library source code
35   ${toggle_debug_libs}            in/exclude debug version of libraries
36   ${toggle_static_msvcrt}         use static MSVCRT (VS builds only)
37   ${toggle_vp9_highbitdepth}      use VP9 high bit depth (10/12) profiles
38   ${toggle_vp8}                   VP8 codec support
39   ${toggle_vp9}                   VP9 codec support
40   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
41   ${toggle_postproc}              postprocessing
42   ${toggle_vp9_postproc}          vp9 specific postprocessing
43   ${toggle_multithread}           multithreaded encoding and decoding
44   ${toggle_spatial_resampling}    spatial sampling (scaling) support
45   ${toggle_realtime_only}         enable this option while building for real-time encoding
46   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
47   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
48   ${toggle_coefficient_range_checking}
49                                   enable decoder to check if intermediate
50                                   transform coefficients are in valid range
51   ${toggle_runtime_cpu_detect}    runtime cpu detection
52   ${toggle_shared}                shared library support
53   ${toggle_static}                static library support
54   ${toggle_small}                 favor smaller size over speed
55   ${toggle_postproc_visualizer}   macro block / block level visualizers
56   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
57   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
58   ${toggle_vp9_temporal_denoising}
59                                   enable vp9 temporal denoising
60   ${toggle_webm_io}               enable input from and output to WebM container
61   ${toggle_libyuv}                enable libyuv
62
63 Codecs:
64   Codecs can be selectively enabled or disabled individually, or by family:
65       --disable-<codec>
66   is equivalent to:
67       --disable-<codec>-encoder
68       --disable-<codec>-decoder
69
70   Codecs available in this distribution:
71 EOF
72 #restore editor state '
73
74     family="";
75     last_family="";
76     c="";
77     str="";
78     for c in ${CODECS}; do
79         family=${c%_*}
80         if [ "${family}" != "${last_family}" ]; then
81             [ -z "${str}" ] || echo "${str}"
82             str="$(printf '    %10s:' ${family})"
83         fi
84         str="${str} $(printf '%10s' ${c#*_})"
85         last_family=${family}
86     done
87     echo "${str}"
88     show_help_post
89 }
90
91 ##
92 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
93 ##
94
95 # all_platforms is a list of all supported target platforms. Maintain
96 # alphabetically by architecture, generic-gnu last.
97 all_platforms="${all_platforms} armv6-darwin-gcc"
98 all_platforms="${all_platforms} armv6-linux-rvct"
99 all_platforms="${all_platforms} armv6-linux-gcc"
100 all_platforms="${all_platforms} armv6-none-rvct"
101 all_platforms="${all_platforms} arm64-darwin-gcc"
102 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
103 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
104 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
105 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
106 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
107 all_platforms="${all_platforms} armv7-win32-vs11"
108 all_platforms="${all_platforms} armv7-win32-vs12"
109 all_platforms="${all_platforms} armv7s-darwin-gcc"
110 all_platforms="${all_platforms} mips32-linux-gcc"
111 all_platforms="${all_platforms} mips64-linux-gcc"
112 all_platforms="${all_platforms} sparc-solaris-gcc"
113 all_platforms="${all_platforms} x86-android-gcc"
114 all_platforms="${all_platforms} x86-darwin8-gcc"
115 all_platforms="${all_platforms} x86-darwin8-icc"
116 all_platforms="${all_platforms} x86-darwin9-gcc"
117 all_platforms="${all_platforms} x86-darwin9-icc"
118 all_platforms="${all_platforms} x86-darwin10-gcc"
119 all_platforms="${all_platforms} x86-darwin11-gcc"
120 all_platforms="${all_platforms} x86-darwin12-gcc"
121 all_platforms="${all_platforms} x86-darwin13-gcc"
122 all_platforms="${all_platforms} x86-darwin14-gcc"
123 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
124 all_platforms="${all_platforms} x86-linux-gcc"
125 all_platforms="${all_platforms} x86-linux-icc"
126 all_platforms="${all_platforms} x86-os2-gcc"
127 all_platforms="${all_platforms} x86-solaris-gcc"
128 all_platforms="${all_platforms} x86-win32-gcc"
129 all_platforms="${all_platforms} x86-win32-vs7"
130 all_platforms="${all_platforms} x86-win32-vs8"
131 all_platforms="${all_platforms} x86-win32-vs9"
132 all_platforms="${all_platforms} x86-win32-vs10"
133 all_platforms="${all_platforms} x86-win32-vs11"
134 all_platforms="${all_platforms} x86-win32-vs12"
135 all_platforms="${all_platforms} x86_64-android-gcc"
136 all_platforms="${all_platforms} x86_64-darwin9-gcc"
137 all_platforms="${all_platforms} x86_64-darwin10-gcc"
138 all_platforms="${all_platforms} x86_64-darwin11-gcc"
139 all_platforms="${all_platforms} x86_64-darwin12-gcc"
140 all_platforms="${all_platforms} x86_64-darwin13-gcc"
141 all_platforms="${all_platforms} x86_64-darwin14-gcc"
142 all_platforms="${all_platforms} x86_64-iphonesimulator-gcc"
143 all_platforms="${all_platforms} x86_64-linux-gcc"
144 all_platforms="${all_platforms} x86_64-linux-icc"
145 all_platforms="${all_platforms} x86_64-solaris-gcc"
146 all_platforms="${all_platforms} x86_64-win64-gcc"
147 all_platforms="${all_platforms} x86_64-win64-vs8"
148 all_platforms="${all_platforms} x86_64-win64-vs9"
149 all_platforms="${all_platforms} x86_64-win64-vs10"
150 all_platforms="${all_platforms} x86_64-win64-vs11"
151 all_platforms="${all_platforms} x86_64-win64-vs12"
152 all_platforms="${all_platforms} generic-gnu"
153
154 # all_targets is a list of all targets that can be configured
155 # note that these should be in dependency order for now.
156 all_targets="libs examples docs"
157
158 # all targets available are enabled, by default.
159 for t in ${all_targets}; do
160     [ -f "${source_path}/${t}.mk" ] && enable_feature ${t}
161 done
162
163 if ! perl --version >/dev/null; then
164     die "Perl is required to build"
165 fi
166
167
168 if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; then
169   # test to see if source_path already configured
170   if [ -f "${source_path}/vpx_config.h" ]; then
171     die "source directory already configured; run 'make distclean' there first"
172   fi
173 fi
174
175 # check installed doxygen version
176 doxy_version=$(doxygen --version 2>/dev/null)
177 doxy_major=${doxy_version%%.*}
178 if [ ${doxy_major:-0} -ge 1 ]; then
179     doxy_version=${doxy_version#*.}
180     doxy_minor=${doxy_version%%.*}
181     doxy_patch=${doxy_version##*.}
182
183     [ $doxy_major -gt 1 ] && enable_feature doxygen
184     [ $doxy_minor -gt 5 ] && enable_feature doxygen
185     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
186 fi
187
188 # disable codecs when their source directory does not exist
189 [ -d "${source_path}/vp8" ] || disable_feature vp8
190 [ -d "${source_path}/vp9" ] || disable_feature vp9
191
192 # install everything except the sources, by default. sources will have
193 # to be enabled when doing dist builds, since that's no longer a common
194 # case.
195 enabled doxygen && enable_feature install_docs
196 enable_feature install_bins
197 enable_feature install_libs
198
199 enable_feature static
200 enable_feature optimizations
201 enable_feature dependency_tracking
202 enable_feature spatial_resampling
203 enable_feature multithread
204 enable_feature os_support
205 enable_feature temporal_denoising
206
207 CODECS="
208     vp8_encoder
209     vp8_decoder
210     vp9_encoder
211     vp9_decoder
212 "
213 CODEC_FAMILIES="
214     vp8
215     vp9
216 "
217
218 ARCH_LIST="
219     arm
220     mips
221     x86
222     x86_64
223 "
224 ARCH_EXT_LIST="
225     edsp
226     media
227     neon
228     neon_asm
229
230     mips32
231     dspr2
232     msa
233     mips64
234
235     mmx
236     sse
237     sse2
238     sse3
239     ssse3
240     sse4_1
241     avx
242     avx2
243 "
244 HAVE_LIST="
245     ${ARCH_EXT_LIST}
246     vpx_ports
247     stdint_h
248     pthread_h
249     sys_mman_h
250     unistd_h
251 "
252 EXPERIMENT_LIST="
253     spatial_svc
254     fp_mb_stats
255     emulate_hardware
256 "
257 CONFIG_LIST="
258     dependency_tracking
259     external_build
260     install_docs
261     install_bins
262     install_libs
263     install_srcs
264     use_x86inc
265     debug
266     gprof
267     gcov
268     rvct
269     gcc
270     msvs
271     pic
272     big_endian
273
274     codec_srcs
275     debug_libs
276
277     dequant_tokens
278     dc_recon
279     runtime_cpu_detect
280     postproc
281     vp9_postproc
282     multithread
283     internal_stats
284     ${CODECS}
285     ${CODEC_FAMILIES}
286     encoders
287     decoders
288     static_msvcrt
289     spatial_resampling
290     realtime_only
291     onthefly_bitpacking
292     error_concealment
293     shared
294     static
295     small
296     postproc_visualizer
297     os_support
298     unit_tests
299     webm_io
300     libyuv
301     decode_perf_tests
302     encode_perf_tests
303     multi_res_encoding
304     temporal_denoising
305     vp9_temporal_denoising
306     coefficient_range_checking
307     vp9_highbitdepth
308     experimental
309     size_limit
310     ${EXPERIMENT_LIST}
311 "
312 CMDLINE_SELECT="
313     dependency_tracking
314     external_build
315     extra_warnings
316     werror
317     install_docs
318     install_bins
319     install_libs
320     install_srcs
321     debug
322     gprof
323     gcov
324     pic
325     use_x86inc
326     optimizations
327     ccache
328     runtime_cpu_detect
329     thumb
330
331     libs
332     examples
333     docs
334     libc
335     as
336     size_limit
337     codec_srcs
338     debug_libs
339
340     dequant_tokens
341     dc_recon
342     postproc
343     vp9_postproc
344     multithread
345     internal_stats
346     ${CODECS}
347     ${CODEC_FAMILIES}
348     static_msvcrt
349     spatial_resampling
350     realtime_only
351     onthefly_bitpacking
352     error_concealment
353     shared
354     static
355     small
356     postproc_visualizer
357     unit_tests
358     webm_io
359     libyuv
360     decode_perf_tests
361     encode_perf_tests
362     multi_res_encoding
363     temporal_denoising
364     vp9_temporal_denoising
365     coefficient_range_checking
366     vp9_highbitdepth
367     experimental
368 "
369
370 process_cmdline() {
371     for opt do
372         optval="${opt#*=}"
373         case "$opt" in
374         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
375         --enable-?*|--disable-?*)
376         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
377         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
378             if enabled experimental; then
379                 ${action}_feature $option
380             else
381                 log_echo "Ignoring $opt -- not in experimental mode."
382             fi
383         else
384             process_common_cmdline $opt
385         fi
386         ;;
387         *) process_common_cmdline "$opt"
388         ;;
389         esac
390     done
391 }
392
393 post_process_cmdline() {
394     c=""
395
396     # If the codec family is disabled, disable all components of that family.
397     # If the codec family is enabled, enable all components of that family.
398     log_echo "Configuring selected codecs"
399     for c in ${CODECS}; do
400         disabled ${c%%_*} && disable_feature ${c}
401         enabled ${c%%_*} && enable_feature ${c}
402     done
403
404     # Enable all detected codecs, if they haven't been disabled
405     for c in ${CODECS}; do soft_enable $c; done
406
407     # Enable the codec family if any component of that family is enabled
408     for c in ${CODECS}; do
409         enabled $c && enable_feature ${c%_*}
410     done
411
412     # Set the {en,de}coders variable if any algorithm in that class is enabled
413     for c in ${CODECS}; do
414         enabled ${c} && enable_feature ${c##*_}s
415     done
416 }
417
418
419 process_targets() {
420     enabled child || write_common_config_banner
421     write_common_target_config_h ${BUILD_PFX}vpx_config.h
422     write_common_config_targets
423
424     # Calculate the default distribution name, based on the enabled features
425     cf=""
426     DIST_DIR=vpx
427     for cf in $CODEC_FAMILIES; do
428         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
429             DIST_DIR="${DIST_DIR}-${cf}"
430         elif enabled ${cf}_encoder; then
431             DIST_DIR="${DIST_DIR}-${cf}cx"
432         elif enabled ${cf}_decoder; then
433             DIST_DIR="${DIST_DIR}-${cf}dx"
434         fi
435     done
436     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
437     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
438     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
439     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
440     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
441     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
442     case "${tgt_os}" in
443     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
444           DIST_DIR="${DIST_DIR}-${tgt_cc}"
445           ;;
446     esac
447     if [ -f "${source_path}/build/make/version.sh" ]; then
448         ver=`"$source_path/build/make/version.sh" --bare "$source_path"`
449         DIST_DIR="${DIST_DIR}-${ver}"
450         VERSION_STRING=${ver}
451         ver=${ver%%-*}
452         VERSION_PATCH=${ver##*.}
453         ver=${ver%.*}
454         VERSION_MINOR=${ver##*.}
455         ver=${ver#v}
456         VERSION_MAJOR=${ver%.*}
457     fi
458     enabled child || cat <<EOF >> config.mk
459
460 PREFIX=${prefix}
461 ifeq (\$(MAKECMDGOALS),dist)
462 DIST_DIR?=${DIST_DIR}
463 else
464 DIST_DIR?=\$(DESTDIR)${prefix}
465 endif
466 LIBSUBDIR=${libdir##${prefix}/}
467
468 VERSION_STRING=${VERSION_STRING}
469
470 VERSION_MAJOR=${VERSION_MAJOR}
471 VERSION_MINOR=${VERSION_MINOR}
472 VERSION_PATCH=${VERSION_PATCH}
473
474 CONFIGURE_ARGS=${CONFIGURE_ARGS}
475 EOF
476     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
477
478     #
479     # Write makefiles for all enabled targets
480     #
481     for tgt in libs examples docs solution; do
482         tgt_fn="$tgt-$toolchain.mk"
483
484         if enabled $tgt; then
485             echo "Creating makefiles for ${toolchain} ${tgt}"
486             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
487             #write_${tgt}_config
488         fi
489     done
490
491 }
492
493 process_detect() {
494     if enabled shared; then
495         # Can only build shared libs on a subset of platforms. Doing this check
496         # here rather than at option parse time because the target auto-detect
497         # magic happens after the command line has been parsed.
498         if ! enabled linux && ! enabled os2; then
499             if enabled gnu; then
500                 echo "--enable-shared is only supported on ELF; assuming this is OK"
501             else
502                 die "--enable-shared only supported on ELF and OS/2 for now"
503             fi
504         fi
505     fi
506     if [ -z "$CC" ] || enabled external_build; then
507         echo "Bypassing toolchain for environment detection."
508         enable_feature external_build
509         check_header() {
510             log fake_check_header "$@"
511             header=$1
512             shift
513             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
514             disable_feature $var
515             # Headers common to all environments
516             case $header in
517                 stdio.h)
518                     true;
519                 ;;
520                 *)
521                     result=false
522                     for d in "$@"; do
523                         [ -f "${d##-I}/$header" ] && result=true && break
524                     done
525                     ${result:-true}
526             esac && enable_feature $var
527
528             # Specialize windows and POSIX environments.
529             case $toolchain in
530                 *-win*-*)
531                     case $header-$toolchain in
532                         stdint*-gcc) true;;
533                         *) false;;
534                     esac && enable_feature $var
535                     ;;
536                 *)
537                     case $header in
538                         stdint.h) true;;
539                         pthread.h) true;;
540                         sys/mman.h) true;;
541                         unistd.h) true;;
542                         *) false;;
543                     esac && enable_feature $var
544             esac
545             enabled $var
546         }
547         check_ld() {
548             true
549         }
550     fi
551     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
552     check_ld <<EOF || die "Toolchain is unable to link executables"
553 int main(void) {return 0;}
554 EOF
555     # check system headers
556     check_header stdint.h
557     check_header pthread.h
558     check_header sys/mman.h
559     check_header unistd.h # for sysconf(3) and friends.
560
561     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
562 }
563
564 process_toolchain() {
565     process_common_toolchain
566
567     # Enable some useful compiler flags
568     if enabled gcc; then
569         enabled werror && check_add_cflags -Werror
570         check_add_cflags -Wall
571         check_add_cflags -Wdeclaration-after-statement
572         check_add_cflags -Wdisabled-optimization
573         check_add_cflags -Wpointer-arith
574         check_add_cflags -Wtype-limits
575         check_add_cflags -Wcast-qual
576         check_add_cflags -Wvla
577         check_add_cflags -Wimplicit-function-declaration
578         check_add_cflags -Wuninitialized
579         check_add_cflags -Wunused-variable
580         case ${CC} in
581           *clang*)
582               # libvpx and/or clang have issues with aliasing:
583               # https://code.google.com/p/webm/issues/detail?id=603
584               # work around them until they are fixed
585               check_add_cflags -fno-strict-aliasing
586           ;;
587           *) check_add_cflags -Wunused-but-set-variable ;;
588         esac
589         enabled extra_warnings || check_add_cflags -Wno-unused-function
590     fi
591
592     if enabled icc; then
593         enabled werror && check_add_cflags -Werror
594         check_add_cflags -Wall
595         check_add_cflags -Wpointer-arith
596
597         # ICC has a number of floating point optimizations that we disable
598         # in favor of deterministic output WRT to other compilers
599         add_cflags -fp-model precise
600     fi
601
602     # Enable extra, harmless warnings. These might provide additional insight
603     # to what the compiler is doing and why, but in general, but they shouldn't
604     # be treated as fatal, even if we're treating warnings as errors.
605     GCC_EXTRA_WARNINGS="
606         -Wdisabled-optimization
607         -Winline
608     "
609     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
610     RVCT_EXTRA_WARNINGS="
611         --remarks
612     "
613     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
614     if enabled extra_warnings; then
615         for w in ${EXTRA_WARNINGS}; do
616             check_add_cflags ${w}
617             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
618         done
619     fi
620
621     # ccache only really works on gcc toolchains
622     enabled gcc || soft_disable ccache
623     if enabled mips; then
624         enable_feature dequant_tokens
625         enable_feature dc_recon
626     fi
627
628     if enabled internal_stats; then
629         enable_feature vp9_postproc
630     fi
631
632     # Enable the postbuild target if building for visual studio.
633     case "$tgt_cc" in
634         vs*) enable_feature msvs
635              enable_feature solution
636              vs_version=${tgt_cc##vs}
637              case $vs_version in
638              [789])
639                  VCPROJ_SFX=vcproj
640                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
641                  ;;
642              10|11|12)
643                  VCPROJ_SFX=vcxproj
644                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
645                  enabled werror && gen_vcproj_cmd="${gen_vcproj_cmd} --enable-werror"
646                  ;;
647              esac
648              all_targets="${all_targets} solution"
649              INLINE="__forceinline"
650         ;;
651     esac
652
653     # Other toolchain specific defaults
654     case $toolchain in x86*) soft_enable postproc;; esac
655
656     if enabled postproc_visualizer; then
657         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
658     fi
659
660     # Enable unit tests by default if we have a working C++ compiler.
661     case "$toolchain" in
662         *-vs*)
663             soft_enable unit_tests
664             soft_enable webm_io
665             soft_enable libyuv
666         ;;
667         *-android-*)
668             soft_enable webm_io
669             soft_enable libyuv
670             # GTestLog must be modified to use Android logging utilities.
671         ;;
672         *-darwin-*)
673             # iOS/ARM builds do not work with gtest. This does not match
674             # x86 targets.
675         ;;
676         *-iphonesimulator-*)
677             soft_enable webm_io
678             soft_enable libyuv
679         ;;
680         *-win*)
681             # Some mingw toolchains don't have pthread available by default.
682             # Treat these more like visual studio where threading in gtest
683             # would be disabled for the same reason.
684             check_cxx "$@" <<EOF && soft_enable unit_tests
685 int z;
686 EOF
687             check_cxx "$@" <<EOF && soft_enable webm_io
688 int z;
689 EOF
690             check_cxx "$@" <<EOF && soft_enable libyuv
691 int z;
692 EOF
693         ;;
694         *)
695             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
696 int z;
697 EOF
698             check_cxx "$@" <<EOF && soft_enable webm_io
699 int z;
700 EOF
701             check_cxx "$@" <<EOF && soft_enable libyuv
702 int z;
703 EOF
704         ;;
705     esac
706     # libwebm needs to be linked with C++ standard library
707     enabled webm_io && LD=${CXX}
708 }
709
710
711 ##
712 ## END APPLICATION SPECIFIC CONFIGURATION
713 ##
714 CONFIGURE_ARGS="$@"
715 process "$@"
716 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
717 cat <<EOF >> ${BUILD_PFX}vpx_config.c
718 #include "vpx/vpx_codec.h"
719 static const char* const cfg = "$CONFIGURE_ARGS";
720 const char *vpx_codec_build_config(void) {return cfg;}
721 EOF