HP OpenVMS Systems

Examples


     1.  Most of the time, you just want to link against the
         shareable image.  The linker automatically searches
         IMAGELIB.OLB to find DECC$SHR.EXE:

         $ CC/PREFIX_LIBRARY_ENTRIES=ALL_ENTRIES PROG1
         $ LINK PROG1

     2.  If you want to use just object libraries (to write
         privileged code or for ease of distribution, for example),
         use the /NOSYSSHR qualifier of the LINK command.  Prefixed
         RTL symbol references in the user program are resolved in
         the HP C RTL object library contained in STARLET.OLB:

         $ CC/PREFIX_LIBRARY_ENTRIES=ALL_ENTRIES PROG1
         $ LINK/NOSYSSHR PROG1

     3.  When compiling with prefixing disabled, in order to use
         object libraries that provide alternate implementations of
         C RTL functions, you need to use the VAXC*.OLB object
         libraries.  Unprefixed HP C RTL symbol references in the
         user program are resolved in MYLIB and in VAXCRTL.OLB.
         Prefixed HP C RTL symbol references in VAXCRTL.OLB are
         resolved in DECC$SHR.EXE through IMAGELIB.OLB.  In this
         case, compile and link as follows:

         $ CC/NOPREFIX_LIBRARY_ENTRIES PROG1
         $ LINK PROG1, MYLIB/LIBRARY, ALPHA$LIBRARY:VAXCRTL.OLB/LIBRARY

     4.  You can, of course, link with any valid combination of
         vaxcrtl.olb, vaxcrtld.olb, vaxcrtlt.olb, and vaxccurse.olb.
         In this same example, to get IEEE T-floating double
         precision, floating point support, you might use the
         following compile and link commands:

         $ CC/NOPREFIX_LIBRARY_ENTRIES/FLOAT=IEEE_FLOAT PROG1
         $ LINK PROG1, MYLIB/LIBRARY, ALPHA$LIBRARY:VAXCRTLT.OLB/LIBRARY,  -
         _$ ALPHA$LIBRARY:VAXCRTL.OLB/LIBRARY       

     5.  Combining examples 2 and 3, you might want to use just the
         object libraries (for writing privileged code or for ease
         of distribution) and use an bject library that provides C
         RTL functions.  Prefixed HP C RTL symbol references in
         VAXCRTL.OLB are resolved in STARLET.OLB.  In this case,
         compile and link as follows:

         $ CC/NOPREFIX_LIBRARY_ENTRIES PROG1
         $ LINK/NOSYSSHR PROG1, ALPHA$LIBRARY:VAXCRTL.OLB/LIBRARY