But the cairo library is out there. I manually run the link command, it runs successful

Take a close look at the output from the ./Build.PL step - mainly checking to see if there's any mention of a problem locating "-lcairo".

I'm wondering whether perl, having not been able to find -lcairo, might then do something to the environment that ensures that the linker won't find it either.
Then, when you run the command manually, it works because you're now running in an environment that perl has not corrupted.

Just a guess ... I'm not all that familiar with Module::Build ... and firmly committed to staying that way.

Cheers,
Rob

In reply to Re: Failed to link while building XS code by syphilis
in thread Failed to link while building XS code by llancet

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.