[cfe-dev] [Patch] Fix '-include' Path Search (PR 3395)

[Jon Simons]

Attached is a patch to fix '-include' for clang (PR 3395).

Currently, paths fed to '-include' are treated as relative to the
compliation unit at hand, instead of to the current working directory
from which clang was invoked.  The patch coerces relative paths into
absolute ones, which seem to be handled just fine by the Lexer and
Preprocessor.

That said, this feels a bit hackish.  I hate munging paths.  It's
entirely possible someone more familiar could suggest a cleaner way
:).  Nothing is jumping out at me from my cursory, hobbyist readings.


Cool Beans,
-Jon Simons
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