]> granicus.if.org Git - libvpx/blob - configure
Merge "vp10: merge keyframe/interframe uvintramode/partition probabilities."
[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_vp10}                  VP10 codec support
41   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
42   ${toggle_postproc}              postprocessing
43   ${toggle_vp9_postproc}          vp9 specific postprocessing
44   ${toggle_multithread}           multithreaded encoding and decoding
45   ${toggle_spatial_resampling}    spatial sampling (scaling) support
46   ${toggle_realtime_only}         enable this option while building for real-time encoding
47   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
48   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
49   ${toggle_coefficient_range_checking}
50                                   enable decoder to check if intermediate
51                                   transform coefficients are in valid range
52   ${toggle_runtime_cpu_detect}    runtime cpu detection
53   ${toggle_shared}                shared library support
54   ${toggle_static}                static library support
55   ${toggle_small}                 favor smaller size over speed
56   ${toggle_postproc_visualizer}   macro block / block level visualizers
57   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
58   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
59   ${toggle_vp9_temporal_denoising}
60                                   enable vp9 temporal denoising
61   ${toggle_webm_io}               enable input from and output to WebM container
62   ${toggle_libyuv}                enable libyuv
63
64 Codecs:
65   Codecs can be selectively enabled or disabled individually, or by family:
66       --disable-<codec>
67   is equivalent to:
68       --disable-<codec>-encoder
69       --disable-<codec>-decoder
70
71   Codecs available in this distribution:
72 EOF
73 #restore editor state '
74
75     family="";
76     last_family="";
77     c="";
78     str="";
79     for c in ${CODECS}; do
80         family=${c%_*}
81         if [ "${family}" != "${last_family}" ]; then
82             [ -z "${str}" ] || echo "${str}"
83             str="$(printf '    %10s:' ${family})"
84         fi
85         str="${str} $(printf '%10s' ${c#*_})"
86         last_family=${family}
87     done
88     echo "${str}"
89     show_help_post
90 }
91
92 ##
93 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
94 ##
95
96 # all_platforms is a list of all supported target platforms. Maintain
97 # alphabetically by architecture, generic-gnu last.
98 all_platforms="${all_platforms} armv6-darwin-gcc"
99 all_platforms="${all_platforms} armv6-linux-rvct"
100 all_platforms="${all_platforms} armv6-linux-gcc"
101 all_platforms="${all_platforms} armv6-none-rvct"
102 all_platforms="${all_platforms} arm64-darwin-gcc"
103 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
104 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
105 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
106 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
107 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
108 all_platforms="${all_platforms} armv7-win32-vs11"
109 all_platforms="${all_platforms} armv7-win32-vs12"
110 all_platforms="${all_platforms} armv7-win32-vs14"
111 all_platforms="${all_platforms} armv7s-darwin-gcc"
112 all_platforms="${all_platforms} mips32-linux-gcc"
113 all_platforms="${all_platforms} mips64-linux-gcc"
114 all_platforms="${all_platforms} sparc-solaris-gcc"
115 all_platforms="${all_platforms} x86-android-gcc"
116 all_platforms="${all_platforms} x86-darwin8-gcc"
117 all_platforms="${all_platforms} x86-darwin8-icc"
118 all_platforms="${all_platforms} x86-darwin9-gcc"
119 all_platforms="${all_platforms} x86-darwin9-icc"
120 all_platforms="${all_platforms} x86-darwin10-gcc"
121 all_platforms="${all_platforms} x86-darwin11-gcc"
122 all_platforms="${all_platforms} x86-darwin12-gcc"
123 all_platforms="${all_platforms} x86-darwin13-gcc"
124 all_platforms="${all_platforms} x86-darwin14-gcc"
125 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
126 all_platforms="${all_platforms} x86-linux-gcc"
127 all_platforms="${all_platforms} x86-linux-icc"
128 all_platforms="${all_platforms} x86-os2-gcc"
129 all_platforms="${all_platforms} x86-solaris-gcc"
130 all_platforms="${all_platforms} x86-win32-gcc"
131 all_platforms="${all_platforms} x86-win32-vs7"
132 all_platforms="${all_platforms} x86-win32-vs8"
133 all_platforms="${all_platforms} x86-win32-vs9"
134 all_platforms="${all_platforms} x86-win32-vs10"
135 all_platforms="${all_platforms} x86-win32-vs11"
136 all_platforms="${all_platforms} x86-win32-vs12"
137 all_platforms="${all_platforms} x86-win32-vs14"
138 all_platforms="${all_platforms} x86_64-android-gcc"
139 all_platforms="${all_platforms} x86_64-darwin9-gcc"
140 all_platforms="${all_platforms} x86_64-darwin10-gcc"
141 all_platforms="${all_platforms} x86_64-darwin11-gcc"
142 all_platforms="${all_platforms} x86_64-darwin12-gcc"
143 all_platforms="${all_platforms} x86_64-darwin13-gcc"
144 all_platforms="${all_platforms} x86_64-darwin14-gcc"
145 all_platforms="${all_platforms} x86_64-iphonesimulator-gcc"
146 all_platforms="${all_platforms} x86_64-linux-gcc"
147 all_platforms="${all_platforms} x86_64-linux-icc"
148 all_platforms="${all_platforms} x86_64-solaris-gcc"
149 all_platforms="${all_platforms} x86_64-win64-gcc"
150 all_platforms="${all_platforms} x86_64-win64-vs8"
151 all_platforms="${all_platforms} x86_64-win64-vs9"
152 all_platforms="${all_platforms} x86_64-win64-vs10"
153 all_platforms="${all_platforms} x86_64-win64-vs11"
154 all_platforms="${all_platforms} x86_64-win64-vs12"
155 all_platforms="${all_platforms} x86_64-win64-vs14"
156 all_platforms="${all_platforms} generic-gnu"
157
158 # all_targets is a list of all targets that can be configured
159 # note that these should be in dependency order for now.
160 all_targets="libs examples docs"
161
162 # all targets available are enabled, by default.
163 for t in ${all_targets}; do
164     [ -f "${source_path}/${t}.mk" ] && enable_feature ${t}
165 done
166
167 if ! perl --version >/dev/null; then
168     die "Perl is required to build"
169 fi
170
171
172 if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; then
173   # test to see if source_path already configured
174   if [ -f "${source_path}/vpx_config.h" ]; then
175     die "source directory already configured; run 'make distclean' there first"
176   fi
177 fi
178
179 # check installed doxygen version
180 doxy_version=$(doxygen --version 2>/dev/null)
181 doxy_major=${doxy_version%%.*}
182 if [ ${doxy_major:-0} -ge 1 ]; then
183     doxy_version=${doxy_version#*.}
184     doxy_minor=${doxy_version%%.*}
185     doxy_patch=${doxy_version##*.}
186
187     [ $doxy_major -gt 1 ] && enable_feature doxygen
188     [ $doxy_minor -gt 5 ] && enable_feature doxygen
189     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
190 fi
191
192 # disable codecs when their source directory does not exist
193 [ -d "${source_path}/vp8" ] || disable_feature vp8
194 [ -d "${source_path}/vp9" ] || disable_feature vp9
195 [ -d "${source_path}/vp10" ] || disable_feature vp10
196
197 # disable vp10 codec by default
198 disable_feature vp10
199
200 # install everything except the sources, by default. sources will have
201 # to be enabled when doing dist builds, since that's no longer a common
202 # case.
203 enabled doxygen && enable_feature install_docs
204 enable_feature install_bins
205 enable_feature install_libs
206
207 enable_feature static
208 enable_feature optimizations
209 enable_feature dependency_tracking
210 enable_feature spatial_resampling
211 enable_feature multithread
212 enable_feature os_support
213 enable_feature temporal_denoising
214
215 CODECS="
216     vp8_encoder
217     vp8_decoder
218     vp9_encoder
219     vp9_decoder
220     vp10_encoder
221     vp10_decoder
222 "
223 CODEC_FAMILIES="
224     vp8
225     vp9
226     vp10
227 "
228
229 ARCH_LIST="
230     arm
231     mips
232     x86
233     x86_64
234 "
235 ARCH_EXT_LIST="
236     edsp
237     media
238     neon
239     neon_asm
240
241     mips32
242     dspr2
243     msa
244     mips64
245
246     mmx
247     sse
248     sse2
249     sse3
250     ssse3
251     sse4_1
252     avx
253     avx2
254 "
255 HAVE_LIST="
256     ${ARCH_EXT_LIST}
257     vpx_ports
258     stdint_h
259     pthread_h
260     sys_mman_h
261     unistd_h
262 "
263 EXPERIMENT_LIST="
264     spatial_svc
265     fp_mb_stats
266     emulate_hardware
267     misc_fixes
268     universal_hp
269 "
270 CONFIG_LIST="
271     dependency_tracking
272     external_build
273     install_docs
274     install_bins
275     install_libs
276     install_srcs
277     use_x86inc
278     debug
279     gprof
280     gcov
281     rvct
282     gcc
283     msvs
284     pic
285     big_endian
286
287     codec_srcs
288     debug_libs
289
290     dequant_tokens
291     dc_recon
292     runtime_cpu_detect
293     postproc
294     vp9_postproc
295     multithread
296     internal_stats
297     ${CODECS}
298     ${CODEC_FAMILIES}
299     encoders
300     decoders
301     static_msvcrt
302     spatial_resampling
303     realtime_only
304     onthefly_bitpacking
305     error_concealment
306     shared
307     static
308     small
309     postproc_visualizer
310     os_support
311     unit_tests
312     webm_io
313     libyuv
314     decode_perf_tests
315     encode_perf_tests
316     multi_res_encoding
317     temporal_denoising
318     vp9_temporal_denoising
319     coefficient_range_checking
320     vp9_highbitdepth
321     experimental
322     size_limit
323     ${EXPERIMENT_LIST}
324 "
325 CMDLINE_SELECT="
326     dependency_tracking
327     external_build
328     extra_warnings
329     werror
330     install_docs
331     install_bins
332     install_libs
333     install_srcs
334     debug
335     gprof
336     gcov
337     pic
338     use_x86inc
339     optimizations
340     ccache
341     runtime_cpu_detect
342     thumb
343
344     libs
345     examples
346     docs
347     libc
348     as
349     size_limit
350     codec_srcs
351     debug_libs
352
353     dequant_tokens
354     dc_recon
355     postproc
356     vp9_postproc
357     multithread
358     internal_stats
359     ${CODECS}
360     ${CODEC_FAMILIES}
361     static_msvcrt
362     spatial_resampling
363     realtime_only
364     onthefly_bitpacking
365     error_concealment
366     shared
367     static
368     small
369     postproc_visualizer
370     unit_tests
371     webm_io
372     libyuv
373     decode_perf_tests
374     encode_perf_tests
375     multi_res_encoding
376     temporal_denoising
377     vp9_temporal_denoising
378     coefficient_range_checking
379     vp9_highbitdepth
380     experimental
381 "
382
383 process_cmdline() {
384     for opt do
385         optval="${opt#*=}"
386         case "$opt" in
387         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
388         --enable-?*|--disable-?*)
389         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
390         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
391             if enabled experimental; then
392                 ${action}_feature $option
393             else
394                 log_echo "Ignoring $opt -- not in experimental mode."
395             fi
396         else
397             process_common_cmdline $opt
398         fi
399         ;;
400         *) process_common_cmdline "$opt"
401         ;;
402         esac
403     done
404 }
405
406 post_process_cmdline() {
407     c=""
408
409     # If the codec family is disabled, disable all components of that family.
410     # If the codec family is enabled, enable all components of that family.
411     log_echo "Configuring selected codecs"
412     for c in ${CODECS}; do
413         disabled ${c%%_*} && disable_feature ${c}
414         enabled ${c%%_*} && enable_feature ${c}
415     done
416
417     # Enable all detected codecs, if they haven't been disabled
418     for c in ${CODECS}; do soft_enable $c; done
419
420     # Enable the codec family if any component of that family is enabled
421     for c in ${CODECS}; do
422         enabled $c && enable_feature ${c%_*}
423     done
424
425     # Set the {en,de}coders variable if any algorithm in that class is enabled
426     for c in ${CODECS}; do
427         enabled ${c} && enable_feature ${c##*_}s
428     done
429 }
430
431
432 process_targets() {
433     enabled child || write_common_config_banner
434     write_common_target_config_h ${BUILD_PFX}vpx_config.h
435     write_common_config_targets
436
437     # Calculate the default distribution name, based on the enabled features
438     cf=""
439     DIST_DIR=vpx
440     for cf in $CODEC_FAMILIES; do
441         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
442             DIST_DIR="${DIST_DIR}-${cf}"
443         elif enabled ${cf}_encoder; then
444             DIST_DIR="${DIST_DIR}-${cf}cx"
445         elif enabled ${cf}_decoder; then
446             DIST_DIR="${DIST_DIR}-${cf}dx"
447         fi
448     done
449     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
450     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
451     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
452     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
453     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
454     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
455     case "${tgt_os}" in
456     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
457           DIST_DIR="${DIST_DIR}-${tgt_cc}"
458           ;;
459     esac
460     if [ -f "${source_path}/build/make/version.sh" ]; then
461         ver=`"$source_path/build/make/version.sh" --bare "$source_path"`
462         DIST_DIR="${DIST_DIR}-${ver}"
463         VERSION_STRING=${ver}
464         ver=${ver%%-*}
465         VERSION_PATCH=${ver##*.}
466         ver=${ver%.*}
467         VERSION_MINOR=${ver##*.}
468         ver=${ver#v}
469         VERSION_MAJOR=${ver%.*}
470     fi
471     enabled child || cat <<EOF >> config.mk
472
473 PREFIX=${prefix}
474 ifeq (\$(MAKECMDGOALS),dist)
475 DIST_DIR?=${DIST_DIR}
476 else
477 DIST_DIR?=\$(DESTDIR)${prefix}
478 endif
479 LIBSUBDIR=${libdir##${prefix}/}
480
481 VERSION_STRING=${VERSION_STRING}
482
483 VERSION_MAJOR=${VERSION_MAJOR}
484 VERSION_MINOR=${VERSION_MINOR}
485 VERSION_PATCH=${VERSION_PATCH}
486
487 CONFIGURE_ARGS=${CONFIGURE_ARGS}
488 EOF
489     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
490
491     #
492     # Write makefiles for all enabled targets
493     #
494     for tgt in libs examples docs solution; do
495         tgt_fn="$tgt-$toolchain.mk"
496
497         if enabled $tgt; then
498             echo "Creating makefiles for ${toolchain} ${tgt}"
499             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
500             #write_${tgt}_config
501         fi
502     done
503
504 }
505
506 process_detect() {
507     if enabled shared; then
508         # Can only build shared libs on a subset of platforms. Doing this check
509         # here rather than at option parse time because the target auto-detect
510         # magic happens after the command line has been parsed.
511         if ! enabled linux && ! enabled os2; then
512             if enabled gnu; then
513                 echo "--enable-shared is only supported on ELF; assuming this is OK"
514             else
515                 die "--enable-shared only supported on ELF and OS/2 for now"
516             fi
517         fi
518     fi
519     if [ -z "$CC" ] || enabled external_build; then
520         echo "Bypassing toolchain for environment detection."
521         enable_feature external_build
522         check_header() {
523             log fake_check_header "$@"
524             header=$1
525             shift
526             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
527             disable_feature $var
528             # Headers common to all environments
529             case $header in
530                 stdio.h)
531                     true;
532                 ;;
533                 *)
534                     result=false
535                     for d in "$@"; do
536                         [ -f "${d##-I}/$header" ] && result=true && break
537                     done
538                     ${result:-true}
539             esac && enable_feature $var
540
541             # Specialize windows and POSIX environments.
542             case $toolchain in
543                 *-win*-*)
544                     case $header-$toolchain in
545                         stdint*-gcc) true;;
546                         *) false;;
547                     esac && enable_feature $var
548                     ;;
549                 *)
550                     case $header in
551                         stdint.h) true;;
552                         pthread.h) true;;
553                         sys/mman.h) true;;
554                         unistd.h) true;;
555                         *) false;;
556                     esac && enable_feature $var
557             esac
558             enabled $var
559         }
560         check_ld() {
561             true
562         }
563     fi
564     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
565     check_ld <<EOF || die "Toolchain is unable to link executables"
566 int main(void) {return 0;}
567 EOF
568     # check system headers
569     check_header stdint.h
570     check_header pthread.h
571     check_header sys/mman.h
572     check_header unistd.h # for sysconf(3) and friends.
573
574     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
575 }
576
577 process_toolchain() {
578     process_common_toolchain
579
580     # Enable some useful compiler flags
581     if enabled gcc; then
582         enabled werror && check_add_cflags -Werror
583         check_add_cflags -Wall
584         check_add_cflags -Wdeclaration-after-statement
585         check_add_cflags -Wdisabled-optimization
586         check_add_cflags -Wpointer-arith
587         check_add_cflags -Wtype-limits
588         check_add_cflags -Wcast-qual
589         check_add_cflags -Wvla
590         check_add_cflags -Wimplicit-function-declaration
591         check_add_cflags -Wuninitialized
592         check_add_cflags -Wunused-variable
593         case ${CC} in
594           *clang*)
595               # libvpx and/or clang have issues with aliasing:
596               # https://code.google.com/p/webm/issues/detail?id=603
597               # work around them until they are fixed
598               check_add_cflags -fno-strict-aliasing
599           ;;
600           *) check_add_cflags -Wunused-but-set-variable ;;
601         esac
602         enabled extra_warnings || check_add_cflags -Wno-unused-function
603     fi
604
605     if enabled icc; then
606         enabled werror && check_add_cflags -Werror
607         check_add_cflags -Wall
608         check_add_cflags -Wpointer-arith
609
610         # ICC has a number of floating point optimizations that we disable
611         # in favor of deterministic output WRT to other compilers
612         add_cflags -fp-model precise
613     fi
614
615     # Enable extra, harmless warnings. These might provide additional insight
616     # to what the compiler is doing and why, but in general, but they shouldn't
617     # be treated as fatal, even if we're treating warnings as errors.
618     GCC_EXTRA_WARNINGS="
619         -Wdisabled-optimization
620         -Winline
621     "
622     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
623     RVCT_EXTRA_WARNINGS="
624         --remarks
625     "
626     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
627     if enabled extra_warnings; then
628         for w in ${EXTRA_WARNINGS}; do
629             check_add_cflags ${w}
630             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
631         done
632     fi
633
634     # ccache only really works on gcc toolchains
635     enabled gcc || soft_disable ccache
636     if enabled mips; then
637         enable_feature dequant_tokens
638         enable_feature dc_recon
639     fi
640
641     if enabled internal_stats; then
642         enable_feature vp9_postproc
643     fi
644
645     # Enable the postbuild target if building for visual studio.
646     case "$tgt_cc" in
647         vs*) enable_feature msvs
648              enable_feature solution
649              vs_version=${tgt_cc##vs}
650              case $vs_version in
651              [789])
652                  VCPROJ_SFX=vcproj
653                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
654                  ;;
655              10|11|12|14)
656                  VCPROJ_SFX=vcxproj
657                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
658                  enabled werror && gen_vcproj_cmd="${gen_vcproj_cmd} --enable-werror"
659                  ;;
660              esac
661              all_targets="${all_targets} solution"
662              INLINE="__forceinline"
663         ;;
664     esac
665
666     # Other toolchain specific defaults
667     case $toolchain in x86*) soft_enable postproc;; esac
668
669     if enabled postproc_visualizer; then
670         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
671     fi
672
673     # Enable unit tests by default if we have a working C++ compiler.
674     case "$toolchain" in
675         *-vs*)
676             soft_enable unit_tests
677             soft_enable webm_io
678             soft_enable libyuv
679         ;;
680         *-android-*)
681             soft_enable webm_io
682             soft_enable libyuv
683             # GTestLog must be modified to use Android logging utilities.
684         ;;
685         *-darwin-*)
686             # iOS/ARM builds do not work with gtest. This does not match
687             # x86 targets.
688         ;;
689         *-iphonesimulator-*)
690             soft_enable webm_io
691             soft_enable libyuv
692         ;;
693         *-win*)
694             # Some mingw toolchains don't have pthread available by default.
695             # Treat these more like visual studio where threading in gtest
696             # would be disabled for the same reason.
697             check_cxx "$@" <<EOF && soft_enable unit_tests
698 int z;
699 EOF
700             check_cxx "$@" <<EOF && soft_enable webm_io
701 int z;
702 EOF
703             check_cxx "$@" <<EOF && soft_enable libyuv
704 int z;
705 EOF
706         ;;
707         *)
708             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
709 int z;
710 EOF
711             check_cxx "$@" <<EOF && soft_enable webm_io
712 int z;
713 EOF
714             check_cxx "$@" <<EOF && soft_enable libyuv
715 int z;
716 EOF
717         ;;
718     esac
719     # libwebm needs to be linked with C++ standard library
720     enabled webm_io && LD=${CXX}
721
722     # append any user defined extra cflags
723     if [ -n "${extra_cflags}" ] ; then
724         check_add_cflags ${extra_cflags} || \
725         die "Requested extra CFLAGS '${extra_cflags}' not supported by compiler"
726     fi
727     if [ -n "${extra_cxxflags}" ]; then
728         check_add_cxxflags ${extra_cxxflags} || \
729         die "Requested extra CXXFLAGS '${extra_cxxflags}' not supported by compiler"
730     fi
731 }
732
733
734 ##
735 ## END APPLICATION SPECIFIC CONFIGURATION
736 ##
737 CONFIGURE_ARGS="$@"
738 process "$@"
739 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
740 cat <<EOF >> ${BUILD_PFX}vpx_config.c
741 #include "vpx/vpx_codec.h"
742 static const char* const cfg = "$CONFIGURE_ARGS";
743 const char *vpx_codec_build_config(void) {return cfg;}
744 EOF