[cfe-dev] Using more than one version of clang

[Edward Diener]

I find that in a Linux distro I want to use both a past version of 
clang, offered as a package, and the latest version I build from the 
llvm/clang source files. I want to use either version at different times 
for the purpose of testing some code.

Is this possible ?

What are the things I must do to use both versions at different times ? 
In particular how does a version of clang find its own header files and 
libaries when I invoke "clang", and what do I have to do make sure that 
a particular version of "clang" I invoke correctly finds its own header 
files and libraries for the purposes of compiling and linking ?