Is the @HAVE_GOBJECT@ pkg-config directive in packages/sofia-sip-ua-glib.pc.in necessary? What does it do?

[ArrayBolt3]

Apologies for this being a question in the bug report area - I'm trying to fix a Debian packaging problem and cannot understand what this directive does. The mailing list seems dead.

One of Debian's package checking tools, Lintian, warns that this directive "could lead to FTBFS or leak private compile flags to another package." (FTBFS = failure to build from source) It looks like (and I could be very wrong here) the directive allows some other package's compile flags to influence how the sofia-sip-ua-glib library behaves. If so, this seems like it could be intentional behavior, but I'm not sure. What exactly is this directive for? Is it possible that there may be some other way of achieving the same result without using it?

Thanks for your help!