[Rcpp-devel] Windows set C++11 flag for new compiler

[Charles Determan]

I have installed a more recent compiler and would like to use the
-std=c++11 flag instead of the -std=c++0x.

system('g++ --version')
truncated... 5.2.0

I have a Makevars.win file where I initially set the CXX_STD=CXX11 however
this uses the default C++11 flag returned from R CMD config CXX1XSTD (i.e.
c++0x).  This is insufficient as I am using template aliases (not supported
in c++0x).

I also tried putting the -std=c++11 directly in the PKG_CXXFLAGS but I get
an error stating:

cc1plus.exe: error: unrecognized command line option '-std=c++11'

I can use the C++11 flag if I set PKG_CXXFLAGS manually and run sourceCpp
on a single file but I want to apply it over an entire package.

Thanks,
Charles
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