[haskell-llvm] Patch to improve configure script for debian.

[Erik de Castro Lopo]

Hi all,

I sent this patch to Lennart and Brian some time ago but still haven't
received any response. Posting it to the list in case anyone else is
interested.

Debian allows simulatneous installation of two different versions of
llvm; llvm which provides version 2.6 and llvm-2.7. In the llvm-2.7
version, the llvm-config script is renamed to llvm-config-2.7. This
patch search for llvm-config-2.7 and if that is not available, then
search for llvm-config.

Cheers,
Erik
-- 
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Erik de Castro Lopo
http://www.mega-nerd.com/
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