Implementation Notes for
                         C-Kermit for CMU-OpenVMS/IP
                                     and
                    CMU-OpenVMS/IP LIBCMU BSD Socket Library

    These notes apply to C-Kermit v5a(189) and later.

    Comments to:
	Mike O'Malley
	Digital Equipment Corporation
	Mike.OMalley@aqo.mts.dec.com or mlomall@sandia.GOV

    THE INFORMATION IN THIS NOTE IS SUBJECT TO CHANGE WITHOUT NOTICE.  THESE
    NOTES SHOULD NOT BE CONSTRUED AS SUGGESTIONS OF, OR A COMMITMENT BY,
    DIGITAL EQUIPMENT CORPORATION.

VAXC Header files

        This distribution contains replacement C header files for use
    with the VAXC v3.1 and later compiler. These header files contain
    information found in header files on most UNIX systems, in fact some
    of the header files have been copied from UNIX systems.  The header
    files should be extracted from the LIBCMU package to the directory
    SYS$COMMON:[SYSLIB].  The file protection should be set to s:RWED,
    o:RWED, g:RWED, w:RE.  Because other VAXC header files use the
    include syntax "#include types", causing the include file to be
    extracted from the text library SYS$LIBRARY:VAXCDEF.TLB, these
    replacement modules should be replaced in the header text library
    using the following commands:

	$ SET DEF SYS$COMMON:[SYSLIB]
	$ COPY VAXCDEF.TLB VAXCDEF.TLB_ORIGINAL
	$ LIBRARY/REPLACE/TEXT VAXCDEF.TLB TYPES.H,TIME.H,SOCKET.H


VMS MAKE and the CKVKER.MAK file.

        The CKVKER.MAK makefile, supplied with the C-Kermit distribution,
    has all the appropriate logic to build the CMU-OpenVMS/IP version.  
    The CKVKER.MAK makefile is intended for use with the VMS-MAKE utility. 
    VMS-Make can be found on the kermit.columbia.edu anonymous ftp file
    server. 

        The make procedure determines that the CMU version is to be
    built by locating the object library LIBCMU.OLB.  The default
    library file specification used is CMUIP_ROOT:[SYSLIB]LIBCMU.OLB. 
    The logical name LIBCMU may be use to modify all or part of the
    library file specification (e.g. $ DEFINE LIBCMU UD:[MYDIR.LIBCMU]).

Using the OpenVMS Debugger and LIBCMU Socket Library

        Included in the LIBCMU distribution is a DEBUG version of the
    LIBCMU object library (LIBCMU_DEBUG.OLB).   If the resultant image
    file is linked with this object module the LIBCMU source code can be
    displayed in the debugger using the debug command:

    	DBG> SET SOURCE DIRECTORY dev:[directory]

        Where `dev:[directory]' is the device and directory where the
    LIBCMU.C source module can be found.

        As an additional example, to set a breakpoint at the LIBCMU
    `socket' routine use the following debugger commands:

        DBG> SET SOURCE UD:[MYDIR.LIBCMU]
    	DBG> SET MODULE LIBCMU
    	DBG> SET BREAK socket
    	DBG> GO