[cfe-commits] [PATCH] Extend support of '-Bprefix' functionality

[Simon Atanasyan]

Hi,

Clang driver accepts only directory as an argument of "-B" option.
Suppose user wants to use "prefix-as" and "prefix-ld" as a linker and
assembler respectively. Clang driver does not allow doing that. gcc
driver accepts arbitrary path's prefix as an argument of "-B" option
and allows to do that using "-Bprefix-" option. The attached patch
adds support of this functionality to the Clang driver.

Please review the patch.

-- 
Simon
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