Your DLL needs to link with the Perl58.lib. Check if Perl58.lib is included in the list of libraries. Setting the include and lib path is not enough, that will only let you compile to an object file. But to produce the final DLL, you have to link the object file & libraries as well. To link properly, you have to tell the linker to link with Perl58.lib under C:\Perl\lib\CORE.

PS. I see that you are using Visual Studio .NET version of the C compiler, not Visual C++ 6 version. I think the .NET version is quite different to the older non .NET version of the Visual C++ compiler, and produces different codes. The .NET compiler generates Just-In-Time opcodes, while the non .NET compiler generates native Machine code.

 Update: forget about the comment on Visual Studio C++ .NET, not relevant to the problem.

In reply to Re: XS Library Compilation Problems: Linker Error by Roger
in thread XS Library Compilation Problems: Linker Error by talwyn

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.