[cfe-dev] clang doesn't know about it's installation prefix when searching header files

[Holger Schurig]

> "GetMainExecutable" is a tricky function to implement in
> cross-platform way. The standard Linux method is to resolve
> symlink /proc/self/exe. On Windows, you call
> GetModuleFileName. See http://autopackage.org/docs/binreloc/
> for extensive discussion.

Good hint.

I know that gcc-crosscompiler toolchains (a.g. arm-linux-gcc) 
needed to be at an absolute position for a long time (at least 
2.95, 3.3.4, 3.4.3). So I want clang to be better here.