thanx, that's right, i was using a wrong version of our Makefile in tha box
> On 2013-01-31 at 19:01 +0100, David Saez Padros wrote:
>> i've been using a dlopen extension for long time, but now i one
>> server i get the following error:
>>
>> failed to expand ACL string
>> "${dlfunc{/usr/local/exim/exim-ext.so}{ip2country}{$sender_host_address}}":
>> dlopen "/usr/local/exim/exim-ext.so" failed:
>> /usr/local/exim/exim-ext.so: undefined symbol: message_id
>>
>> it works on a similar server with same exim & gcc version (exim
>> is 4.80.1 self compiled), looks like local_scan variables are not
>> visible to the extension, nut why ? anyone had the same problem
>> or has a solution for this ?
> Per src/EDITME (which should be your template for Local/Makefile):
>
> ----------------------------8< cut here >8------------------------------
> # Support for dynamically-loaded string expansion functions via ${dlfunc. If
> # you are using gcc the dynamically-loaded object must be compiled with the
> # -shared option, and you will need to add -export-dynamic to EXTRALIBS so
> # that the local_scan API is made available by the linker. You may also need
> # to add -ldl to EXTRALIBS so that dlopen() is available to Exim.
>
> # EXPAND_DLFUNC=yes
> ----------------------------8< cut here >8------------------------------
>
> I'm guessing that EXTRALIBS did not gain -export-dynamic on that box.
>
> Consider checking your build configs into revision control and working
> towards repeatable builds, with checksums, for deployment onto hosts.
>
> -Phil
>
