You can't do a minimal install with Exim, if your definition of 'minimal' is an installation that doesn't include all the SQL libraries. It'd be good to be able to have the postgres and mysql support _optional_. The debian approach of a separate exim package for each configuration sucks somewhat; I don't think we want to go there. Once upon a time I was playing with a patch to make Exim's lookup types dynamically loadable -- so we could ship an exim-mysql package with just a shared library in it, which the user would configure Exim to load (or maybe it could be automatically found in a certain directory). A simpler but more hackish alternative would be to have weak references to all the mysql/postgres functions, and dlopen the library before it's first used. We should fix this before RHEL5.
Others have played with it too. When looking for my patch I found this instead, for example... http://www.exim.org/mail-archives/exim-dev/2005-December/msg00027.html
Created attachment 133706 [details] POC non-working patch to split MySQL lookups into dynamic so From my patch in the above-linked thread, --export-dynamic alone didn't fix it, but Nico E got in contact (or was that earlier...?), as he'd already got a (better) working patch for 4.33. See: http://www.exim.org/mail-archives/exim-dev/2005-December/msg00029.html I modified his patch so that it applied against 4.60 but it still doesn't quite work. Attached is a modified version of Nico's patch that applies against 4.60, but doesn't quite work. It's a proof of concept that patches the MySQL lookups only. NB it also contains a copy of the Makefile I was using. I'm pretty sure that someone with enough knowledge about lookups will be able to fix this without too much trouble.
http://www.exim.org/bugzilla/show_bug.cgi?id=139
David have you reviewed Johannes' patches over at exim.org?
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Still open upstream as per comment #3
I have this ready to commit to the devel branch as soon as we're done branching for F-9. Wondering if I should rename the existing package to something like 'exim-base' and add a new 'exim' package which contains no files but just requires exim-base, exim-mysql and exim-pgsql. That would give people the expected results on upgrades and when they 'yum install exim', while still allowing the cut-down version to be used.
Changing version to '9' as part of upcoming Fedora 9 GA. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
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This was actually implemented a while ago in F-10. Thanks David!