Change Eclipse Dynamic Variable to build a single c++ class

Question

I would like to change the dynamic variable ${selected_resource_loc} such that I get rid of the extension (and can add another one).

The purpose is to build the current selected file, but therefore I don't need the .cc-file in my command but the .o-file with the same name.

Detailed description: I have a customized make command (lets say make) and would like to execute make selectedFileName.o, where the current selected file in eclipse is selectedFileName.cc. (I put the command as build command in project properties -> C/C++ Build.) With variable ${selected_resource_loc} in behaviour tab I get make selectedFileName.cc.

Answer 1

I solved my problem by writing a skript where I modify the ${selected_resource_loc} and included it via external tools in eclipse.