VMS Help CC, Messages, RTLMISMATCH  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        Compaq C RTL prefix table version mismatch:  RTL
                table is V<major>.<minor>, compiler needs
                V<major>.<minor>.

 Description    In most cases, the Compaq C compiler will
                automatically map names of C standard library
                functions to their corresponding names in the Compaq
                C RTL shareable image.  In many cases, this is done
                simpl by adding a "DECC$" prefix to the name.  In
                order for this mapping to work, the compiler accesses
                an RTL mapping table.  The compiler also requires
                that the version of the RTL mapping table be
                compatible with the version of the compiler.  In
                cases where the versions are incompatible, this
                message is generated.  In these cases, no name
                mapping will be performed.  The most common cause of
                this message is specifying an old RTL name in the
                /PREFIX=RTL="name" compiler qualifier.

 User Action    Specify a new RTL on the /PREFIX=RTL qualifier.  If
                no qualifier was used, it might be necessary to
                reinstall the compiler and/or RTL.  For more
                information, consult the Compaq C Run-time Library
                Manual for OpenVMS Systems.