''' Removes all the temporary build files.
''' (Various .o, .a, and ./internal/temp, etc.)
SUB PurgeTemporaryBuildFiles (os AS STRING, mac AS LONG)
    make$ = GetMakeExecutable$
    IF os = "WIN" THEN
        SHELL _HIDE "cmd /c " + make$ + " OS=win clean"
    ELSEIF os = "LNX" THEN
        IF mac THEN
            SHELL _HIDE make$ + " OS=osx clean"
        ELSE
            SHELL _HIDE make$ + " OS=lnx clean"
        END IF
    END IF
END SUB

''' Returns the make executable to use, with path if necessary.
FUNCTION GetMakeExecutable$ ()
    IF os$ = "WIN" THEN
        GetMakeExecutable$ = "internal\c\c_compiler\bin\mingw32-make.exe"
    ELSE
        GetMakeExecutable$ = "make"
    END IF
END FUNCTION