[PATCH] pass environment when invoking llvm-config, etc. from lit.cfg

[scott douglass]

Hi,

 

There are places in llvm/test/lit.cfg and clang/test/lit.cfg where
llvm-config and/or clang are invoked without using config.enviroment which
means that environment variables like ASAN_OPTIONS, INCLUDE, ... will not be
available.

 

I noticed this when running a hacked tool that needed particular
ASAN_OPTIONS to run correctly.  Patches attached, but I don't know how to
write a regression test that works in the normal case since the changed code
runs before the lit tests. Suggestions appreciated.

 

[I have sent this to both llvm-commits and cfe-commits because the changes
are analogous.  My apologies if that was not the right thing to do.]

 
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