====== -fno-diagnostics-show-caret ======
clang complains about: aarch64-poky-linux-clang++: error: unknown argument: '-fno-diagnostics-show-caret'
Workaround:
CXXFLAGS:remove:pn-clang:toolchain-clang = "-fno-diagnostics-show-caret"
CFLAGS:remove:pn-clang:toolchain-clang = "-fno-diagnostics-show-caret"
There is a similar option for clang: ''-fno-caret-diagnostics'', so ''icecc.bbclass' should be fixed in future.