When I click on "Compile" or "Build" it says: "No changed files found. Choose Rebuild All if you want to recompile anyway." If I choose to "Rebuild All", it seems that it just saves the file but doesn´t compile and link it. It happened from one second to another and I can´t figure out what I have changed. In the forum I only found the hint that I should add the c-file to the workspace but it is already added. Can anybody help me please?