.BOS File Extension
File TypeBuild Options Specification File
What is a BOS file?
A BOS file is a build options specification file used by clearmake, a utility that comes with Rational ClearCase used to build executable programs. It contains macro definitions and ClearCase special targets saved in plain text. BOS files are commonly used to store temporary macros (like CFLAGS=/Zi) that should not be permanently included in the makefile.
The clearmake utility is a ClearCase variant of the Linux and Unix make(1) tool. It comes with Rational ClearCase, which is a collection of software tools used to manage software development projects. Several features of clearmake include derived object sharing, build avoidance, and build auditing.