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From Sorin Manolache <>
Subject Re: APR feature detection
Date Thu, 02 Apr 2009 18:59:47 GMT
On Thu, Apr 2, 2009 at 19:45, Dave Ingram <> wrote:
> Hi guys,
> Is there any way that my module can detect which APR features are
> enabled in Apache? It relies on DBD, and if that's not available then my
> module just segfaults, which isn't very friendly. I'd prefer to give an
> error message to the user, telling them that DBD is required.
> Does anyone have any tips, or should I ask the APR list instead?

dbd does this:

APR_RETRIEVE_OPTIONAL_FN(one of the functions above) should give you
NULL if DBD is absent.

The two macros are declared in apr_optional.h.


A: Because it reverses the logical flow of conversation.
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A: Top-posting.
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