[cfe-commits] [patch] Add support for tooldir relative libstdc++

[Rafael Espindola]

Updated patch attached. It is much simpler now that we have a resource dir :-)

One thing that looks a bit of a hack in the patch is to use <resource
dir>../../../<user specified directory>.

Other options I considered:

*) Using just <resource dir>/<user specified directory> . The problem
is that libstdc++ will not be installed under lib/clang/<version>. The
user would always have to use something like

--cxx-include-root=../../../foo/bar

*) Change the resource dir to point to the directory where clang was
installed. It would be easy for the current user to append
lib/clang/<version> to it.

Cheers,
-- 
Rafael Ávila de Espíndola
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