I'd written previously about some .f90 files getting recompiled each time the solution is built, even though they'd not changed. Turns out that each of those routines had something in common: they included a file with a complete path specification, rather than having the directory of the include file in the 'Additional include directories' list. When I added the directory to the list of included directories and removed the complete path specification in the 'include' statement, the routines were no longer continually recompiled.
Bug? Feature? Whatever...
