[exim-dev] [Bug 139] Dynamically loadable lookup modules

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Author: Tony Finch
Date:  
To: exim-dev
Subject: [exim-dev] [Bug 139] Dynamically loadable lookup modules
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http://bugs.exim.org/show_bug.cgi?id=139




--- Comment #20 from Tony Finch <dot@???> 2008-05-14 14:57:21 ---
Some comments based on a fairly cursory read-through of the patch...

I'm not sure that configuring the available lookups by installing files in
a library directory is very nice. I can see it makes sense from a Linux
distribution point of view, but when building from source or creating a
unified package it makes sense to install all the lookups then load only
the necessary ones at run time. I'm not sure if this would lead to a
chicken/egg problem.

drtables.c:

The #include <dlfcn.h> should be removed for portability to
systems without that header. Instead add defined(LOOKUP_MODULE_DIR) to
the #if on line 463 of exim.h which guards another #include <dlfcn.h>.

lookupapi.h:

This file is missing the copyright and end-of-file rubric. The LMM1
comment should be less cryptic.

lookups/Makefile:

This file is gmake-only which is a nasty regression. Exim's build system
has stuff in the scripts directory that constructs the actual Makefile
based on EDITME. I would greatly prefer it if that mechanism were adapted
to support the new functionality so that we don't have to add another
build dependency.

The .c.so rule is non-portable. The shared-library command line options
need to be made into an EDITME option.

Tony.


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