Hello.
Regarding this issue, I found some help on the Lua list: basically recompiling gnugk with the --Wl,--export-dynamic option makes the final gnugk executable expose lua variables to dinamically loaded libraries. I added the following line of code to the Makefile.in in the linux section of the Makefile.in LDFLAGS += -Wl,--export-dynamic and everything works fine.
If this compiler switch can be made permanent, lua scripts can load shared libraries without problem.
pierlu
On Fri, Feb 22, 2019 at 4:52 PM Jan Willamowius via gnugk-users <gnugk-users@xxxxxxxxxxxxxxx> wrote:
Hi,
I used the LUA libary that ships with Ubuntu 18.04, but the static
version. Compiling with the shared libarary is the default.
Jan
--
Jan Willamowius, Founder of the GNU Gatekeeper Project
EMail : jan@xxxxxxxxxxxxxx
Website: https://www.gnugk.org
Support: https://www.willamowius.com/gnugk-support.html
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Geschäftsführer: Jan Willamowius
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pierlu via gnugk-users wrote:
> Hi Jan,
>
> I am using the executable you provide on gnugk website, so I guess that Lua
> is statically linked. Given that I am trying to load a shared library that
> may be the issue.
>
> Can I ask you which version of Lua you used when compiling? I may try using
> the same exact version.
>
> Otherwise I wonder if I can compile GnuGk myself so that Lua is dinamically
> linked... I was looking thru the configure file: is it there where I have
> to look to try to achieve that?
>
> Thank you, pierlu.
>
> On Fri, Feb 22, 2019 at 3:51 PM Jan Willamowius via gnugk-users <
> gnugk-users@xxxxxxxxxxxxxxx> wrote:
>
> > Hi pierlu,
> >
> > Is LUA linked static or shared into your GnuGk ?
> >
> > I think LUA has an issue loading shared libraries when
> > it is itself linked static and not shared into GnuGk.
> >
> > Regards,
> > Jan
> >
> > --
> > Jan Willamowius, Founder of the GNU Gatekeeper Project
> > EMail : jan@xxxxxxxxxxxxxx
> > Website: https://www.gnugk.org
> > Support: https://www.willamowius.com/gnugk-support.html
> >
> > Relaxed Communications GmbH
> > Frahmredder 91, 22393 Hamburg, Germany
> > Geschäftsführer: Jan Willamowius
> > HRB 125261 (Amtsgericht Hamburg)
> > USt-IdNr: DE286003584
> >
> >
> > pierlu via gnugk-users wrote:
> > > Hi,
> > >
> > > briefly: I can easily connect to MySql databases with Lua scripts by
> > using
> > > the luasql.mysql module; to use it I simply enter the following line in
> > the
> > > script
> > >
> > > luasql = require("luasql.mysql")
> > >
> > > When I try to incorporate mysql connectivity into Lua scripts used by
> > GnuGk
> > > I get an error which goes like this:
> > >
> > > LUA Error in LUA script: error
> > > loading module 'luasql.mysql' from file '/usr/local/lib/lua/5.2/
> > > /usr/local/lib/lua/5.2/luasql/mysql.so: undefined symbol:
> > > lua\_settop
> > >
> > > But if I use simple Lua scripts (i.e. without requiring Mysql module)
> > GnuGk
> > > executes them no prob.
> > >
> > > Do you have any ideas on why I am receiving that error in GnuGk?
> > >
> > > I am using GnuGk 5.1 on Ubuntu 18.04.2 with Lua 5.2.4 and LuaSql 2.4.0.
> > > Both Lua and LuaSql where compiled from source.
> > >
> > > Thanks,
> > > pierlu
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