/PREFIX_LIBRARY_ENTRIES

 Controls the VSI C RTL name prefixing.

 The VSI C Run-Time Library (RTL) shareable image (DECC$SHR.EXE)
 resides in IMAGELIB.OLB with a DECC$ prefix for its entry points.
 Every external name in IMAGELIB.OLB has a DECC$ prefix, and,
 therefore, has an OpenVMS conformant name space (a requirement for
 inclusion in IMAGELIB).  The /[NO]PREFIX_LIBRARY_ENTRIES qualifier
 lets you control the VSI C RTL name prefixing.

 The qualifier options are:

 EXCEPT=(name,...)    The names specified are not prefixed.

 ALL_ENTRIES           All C RTL names, as well as C99 names not
                       supported by the underlying C RTL, are
                       prefixed.

 ANSI_C89_ENTRIES     Only ANSI library names are prefixed.

 C99_ENTRIES           Only ISO C Standard 99 (C99) library names
                       are prefixed.  These are a superset of the
                       external names prefixed under
                       /PREFIX=ANSI_C89_ENTRIES and a subset of
                       those prefixed under /PREFIX=ALL_ENTRIES.

                       Note:  The compiler prefixes C99 entries
                       based on their inclusion in the standard, not
                       on the availability of their implementations
                       in the run-time library.  So calling
                       functions introduced in C99 that are not yet
                       implemented in the VSI C RTL will produce
                       unresolved references to symbols prefixed by
                       DECC$ when the program is linked.  In
                       addition, the compiler issues a
                       CC-W-NOTINCRTL message when it prefixes a
                       name that is not in the current C RTL.

 RTL="name"            Generates references to the C RTL indicated
                       by the "name" keyword.  If no keyword is
                       specified, then references to the VSI C RTL
                       are generated by default.  To use an
                       alternate RTL, see its documentation for the
                       name to use.

 If you want no names prefixed, specify /NOPREFIX_LIBRARY_ENTRIES.

 For /STANDARD=ANSI89, the default is /PREFIX=ANSI_C89_ENTRIES.

 For /STANDARD=C99, the default is /PREFIX=C99_ENTRIES.

 For all other compiler modes, the default is /PREFIX=ALL.