Check "Setings -> Compiler and debugger -> Global compiler settings -> Build options -> Save build log to HTML file if build is finished" and probably the nect checkbox also (about full commandline in the HTML file).
The tab named "Build log" will be cleared if you run the project, the html file will remain until the next build.
Alternatively do not use build and run, but just build to view the build results before running your executable (that's what Tim meant with just clicking "rebuild").
A rebuild is needed here, because the blue lines are warnings and do not cause a rebuild of your sources, so just clicking build will not be enough (unless you hae changed the file, that causes the warning).
