I have installed Eclipse Indigo for C/C++ Linux developers on Ubuntu 10.04 x86.
When I use common predefined macro __BASE_FILE__ Eclipse says Sym
Updated: You have to add proper paths to Project->Propoerties->C/C++ General->Paths and Symbols. If it does not help, you can configure Eclipse Code Analyser (which generates the 'errors') in Project->Properties->C/C++ General->Code Analysis. Under the error description you have problem with, try Customize Selected->Scope->Exclusion Patterns.