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As part of an effort to unify support for uClibc++ and libc++, the C/C++ include search path definitions ARCHINCLUDES and ARCHXXINCLUDES are now defined in one central place in tools/Config.mk. It is no longer necessary to define these in every board's scripts/Make.defs. Boards included in the NuttX repository have been updated, but if you are building NuttX for a custom board and are using C++, you may want to make the following changes to :

In your board's configuration, ensure that you have enabled either CONFIG_UCLIBCXX or CONFIG_LIBCXX as appropriate.

In your custom board's scripts/Make.defs file:Remove , remove lines like these:

CINCPATH := ${shell $(INCDIR) -s "$(CC)" $(TOPDIR)$(DELIM)include}
CXXINCPATH := ${shell $(INCDIR) -s "$(CC)" $(TOPDIR)$(DELIM)include$(DELIM)cxx}
ARCHINCLUDES += $(CINCPATH)
ARCHXXINCLUDES += $(CINCPATH) $(CXXINCPATH)

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