Performing C SOURCE FILE Test C_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_f5824/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_f5824.dir/build.make CMakeFiles/cmTC_f5824.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_f5824.dir/src.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -DC_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW   -Werror -Werror=unguarded-availability-new -o CMakeFiles/cmTC_f5824.dir/src.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c
cc1: error: -Werror=unguarded-availability-new: no option -Wunguarded-availability-new
CMakeFiles/cmTC_f5824.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_f5824.dir/src.c.o' failed
make[2]: *** [CMakeFiles/cmTC_f5824.dir/src.c.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_f5824/fast' failed
make[1]: *** [cmTC_f5824/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main(void) { return 0; }
Performing C++ SOURCE FILE Test CXX_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_4670b/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_4670b.dir/build.make CMakeFiles/cmTC_4670b.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_4670b.dir/src.cxx.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-g++ --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -fvisibility-inlines-hidden -Werror=date-time -DCXX_SUPPORTS_WERROR_UNGUARDED_AVAILABILITY_NEW   -Werror -Werror=unguarded-availability-new -o CMakeFiles/cmTC_4670b.dir/src.cxx.o -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.cxx
cc1plus: error: -Werror=unguarded-availability-new: no option -Wunguarded-availability-new
CMakeFiles/cmTC_4670b.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_4670b.dir/src.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_4670b.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_4670b/fast' failed
make[1]: *** [cmTC_4670b/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main() { return 0; }
Performing C SOURCE FILE Test C_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_e1858/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_e1858.dir/build.make CMakeFiles/cmTC_e1858.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_e1858.dir/src.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -DC_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG   -Werror -Wcovered-switch-default -o CMakeFiles/cmTC_e1858.dir/src.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c
arm-linux-gnueabihf-gcc: error: unrecognized command line option '-Wcovered-switch-default'; did you mean '-Wno-switch-default'?
CMakeFiles/cmTC_e1858.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_e1858.dir/src.c.o' failed
make[2]: *** [CMakeFiles/cmTC_e1858.dir/src.c.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_e1858/fast' failed
make[1]: *** [cmTC_e1858/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main(void) { return 0; }
Performing C++ SOURCE FILE Test CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_8ee3d/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_8ee3d.dir/build.make CMakeFiles/cmTC_8ee3d.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_8ee3d.dir/src.cxx.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-g++ --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -DCXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG   -Werror -Wcovered-switch-default -o CMakeFiles/cmTC_8ee3d.dir/src.cxx.o -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.cxx
arm-linux-gnueabihf-g++: error: unrecognized command line option '-Wcovered-switch-default'; did you mean '-Wno-switch-default'?
CMakeFiles/cmTC_8ee3d.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_8ee3d.dir/src.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_8ee3d.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_8ee3d/fast' failed
make[1]: *** [cmTC_8ee3d/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main() { return 0; }
Performing C++ SOURCE FILE Test CXX_SUPPORTS_CLASS_MEMACCESS_FLAG failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_0cb35/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_0cb35.dir/build.make CMakeFiles/cmTC_0cb35.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_0cb35.dir/src.cxx.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-g++ --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -DCXX_SUPPORTS_CLASS_MEMACCESS_FLAG   -Wclass-memaccess -o CMakeFiles/cmTC_0cb35.dir/src.cxx.o -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.cxx
arm-linux-gnueabihf-g++: error: unrecognized command line option '-Wclass-memaccess'
CMakeFiles/cmTC_0cb35.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_0cb35.dir/src.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_0cb35.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_0cb35/fast' failed
make[1]: *** [cmTC_0cb35/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main() { return 0; }
Performing C SOURCE FILE Test C_SUPPORTS_DELETE_NON_VIRTUAL_DTOR_FLAG failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_3a7af/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_3a7af.dir/build.make CMakeFiles/cmTC_3a7af.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_3a7af.dir/src.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -DC_SUPPORTS_DELETE_NON_VIRTUAL_DTOR_FLAG   -Werror -Wdelete-non-virtual-dtor -o CMakeFiles/cmTC_3a7af.dir/src.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c
cc1: error: command line option '-Wdelete-non-virtual-dtor' is valid for C++/ObjC++ but not for C [-Werror]
cc1: all warnings being treated as errors
CMakeFiles/cmTC_3a7af.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_3a7af.dir/src.c.o' failed
make[2]: *** [CMakeFiles/cmTC_3a7af.dir/src.c.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_3a7af/fast' failed
make[1]: *** [cmTC_3a7af/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main(void) { return 0; }
Performing C SOURCE FILE Test C_WCOMMENT_ALLOWS_LINE_WRAP failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_6b327/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_6b327.dir/build.make CMakeFiles/cmTC_6b327.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_6b327.dir/src.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -DC_WCOMMENT_ALLOWS_LINE_WRAP  -Werror -Wcomment   -o CMakeFiles/cmTC_6b327.dir/src.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c:1:1: error: multi-line comment [-Werror=comment]
 // \
 ^
cc1: all warnings being treated as errors
CMakeFiles/cmTC_6b327.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_6b327.dir/src.c.o' failed
make[2]: *** [CMakeFiles/cmTC_6b327.dir/src.c.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_6b327/fast' failed
make[1]: *** [cmTC_6b327/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
// \
//
int main() {return 0;}
Performing C SOURCE FILE Test C_SUPPORTS_STRING_CONVERSION_FLAG failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_2c14b/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_2c14b.dir/build.make CMakeFiles/cmTC_2c14b.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_2c14b.dir/src.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-comment -DC_SUPPORTS_STRING_CONVERSION_FLAG   -Werror -Wstring-conversion -o CMakeFiles/cmTC_2c14b.dir/src.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c
arm-linux-gnueabihf-gcc: error: unrecognized command line option '-Wstring-conversion'; did you mean '-Wint-conversion'?
CMakeFiles/cmTC_2c14b.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_2c14b.dir/src.c.o' failed
make[2]: *** [CMakeFiles/cmTC_2c14b.dir/src.c.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_2c14b/fast' failed
make[1]: *** [cmTC_2c14b/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main(void) { return 0; }
Performing C++ SOURCE FILE Test CXX_SUPPORTS_STRING_CONVERSION_FLAG failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_51dcf/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_51dcf.dir/build.make CMakeFiles/cmTC_51dcf.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_51dcf.dir/src.cxx.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-g++ --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -DCXX_SUPPORTS_STRING_CONVERSION_FLAG   -Werror -Wstring-conversion -o CMakeFiles/cmTC_51dcf.dir/src.cxx.o -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.cxx
arm-linux-gnueabihf-g++: error: unrecognized command line option '-Wstring-conversion'; did you mean '-Wint-conversion'?
CMakeFiles/cmTC_51dcf.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_51dcf.dir/src.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_51dcf.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_51dcf/fast' failed
make[1]: *** [cmTC_51dcf/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main() { return 0; }
Determining if the os_signpost_interval_begin exist failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_62f89/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_62f89.dir/build.make CMakeFiles/cmTC_62f89.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_62f89.dir/CheckSymbolExists.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-comment -ffunction-sections -fdata-sections    -o CMakeFiles/cmTC_62f89.dir/CheckSymbolExists.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:2:10: fatal error: os/signpost.h: No such file or directory
 #include <os/signpost.h>
          ^~~~~~~~~~~~~~~
compilation terminated.
CMakeFiles/cmTC_62f89.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_62f89.dir/CheckSymbolExists.c.o' failed
make[2]: *** [CMakeFiles/cmTC_62f89.dir/CheckSymbolExists.c.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_62f89/fast' failed
make[1]: *** [cmTC_62f89/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


File /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <os/signpost.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef os_signpost_interval_begin
  return ((int*)(&os_signpost_interval_begin))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Performing C++ SOURCE FILE Test CXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_61dcf/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_61dcf.dir/build.make CMakeFiles/cmTC_61dcf.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_61dcf.dir/src.cxx.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-g++ --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -fno-strict-aliasing -pedantic -Wno-long-long -DCXX_SUPPORTS_NO_NESTED_ANON_TYPES_FLAG   -Werror -Wnested-anon-types -o CMakeFiles/cmTC_61dcf.dir/src.cxx.o -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.cxx
arm-linux-gnueabihf-g++: error: unrecognized command line option '-Wnested-anon-types'; did you mean '-Wnested-externs'?
CMakeFiles/cmTC_61dcf.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_61dcf.dir/src.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_61dcf.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_61dcf/fast' failed
make[1]: *** [cmTC_61dcf/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
int main() { return 0; }
Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_cd786/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_cd786.dir/build.make CMakeFiles/cmTC_cd786.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_cd786.dir/src.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-comment -ffunction-sections -fdata-sections -DCMAKE_HAVE_LIBC_PTHREAD   -o CMakeFiles/cmTC_cd786.dir/src.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c
Linking C executable cmTC_cd786
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_cd786.dir/link.txt --verbose=1
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-comment -ffunction-sections -fdata-sections -DCMAKE_HAVE_LIBC_PTHREAD    CMakeFiles/cmTC_cd786.dir/src.c.o  -o cmTC_cd786 
CMakeFiles/cmTC_cd786.dir/src.c.o: In function `main':
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c:11: undefined reference to `pthread_create'
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c:12: undefined reference to `pthread_detach'
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c:13: undefined reference to `pthread_join'
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp/src.c:14: undefined reference to `pthread_atfork'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_cd786.dir/build.make:86: recipe for target 'cmTC_cd786' failed
make[2]: *** [cmTC_cd786] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_cd786/fast' failed
make[1]: *** [cmTC_cd786/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'


Source file was:
#include <pthread.h>

void* test_func(void* data)
{
  return data;
}

int main(void)
{
  pthread_t thread;
  pthread_create(&thread, NULL, test_func, NULL);
  pthread_detach(thread);
  pthread_join(thread, NULL);
  pthread_atfork(NULL, NULL, NULL);
  pthread_exit(NULL);

  return 0;
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_a02ce/fast && make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_a02ce.dir/build.make CMakeFiles/cmTC_a02ce.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_a02ce.dir/CheckFunctionExists.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-comment -ffunction-sections -fdata-sections -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_a02ce.dir/CheckFunctionExists.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/share/cmake-3.15/Modules/CheckFunctionExists.c
Linking C executable cmTC_a02ce
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_a02ce.dir/link.txt --verbose=1
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/bin/arm-linux-gnueabihf-gcc --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -g2 -fPIC -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wimplicit-fallthrough -Wno-comment -ffunction-sections -fdata-sections -DCHECK_FUNCTION_EXISTS=pthread_create    CMakeFiles/cmTC_a02ce.dir/CheckFunctionExists.c.o  -o cmTC_a02ce -lpthreads 
/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-linux-gnueabihf/7.3.1/../../../../arm-linux-gnueabihf/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_a02ce.dir/build.make:86: recipe for target 'cmTC_a02ce' failed
make[2]: *** [cmTC_a02ce] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'
Makefile:121: recipe for target 'cmTC_a02ce/fast' failed
make[1]: *** [cmTC_a02ce/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output-1/build/clang-9.0.1/buildroot-build/CMakeFiles/CMakeTmp'