What is a library header?

Lint uses the designation "library" for those headers over which the programmer normally has no control -- such as compiler and third-party headers.  Use the options +libclass+libdir/-libdir, and +libh/-libh to specify which headers are library.   You can then use the options -wlib-elib, and -elibsym to control lint messages emanating from "library headers", without affecting the checking of your own code.

See Section 5 of the Reference Manual for further discussion and details.

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