I'd look at referring to an external package only if it is big, changes a lot 
or something breaks; and in the case of the VFD modbus library (really just two 
files) I think including them is sufficient

I dont think its worth the extra dependency and seeing what has changed - 
modbus looks like a stable thing to me

what I'll eventually do is integrate the vfs11 driver and make sure only one 
copy of modbus.c/h is included, it can share with gs2_vfd which has a modbus.c 
3 years older

afaict HAL comps dont use it; classicladder has its own modbus driver
        
-m

Am 09.02.2012 um 18:30 schrieb Kirk Wallace:

> Should libmodbus 3 be included in the normal build of LinuxCNC? How are
> third party libraries handled in LinuxCNC? What happens when the third
> party library changes and the dependent component doesn't? Or is it that
> the compiled component is all the user end of LinuxCNC needs? Basically,
> I'm just trying to understand what needs to be done to create a formal
> LinuxCNC C component. Maybe analyzing .comp would spell this out?
> -- 
> Kirk Wallace
> http://www.wallacecompany.com/machine_shop/
> http://www.wallacecompany.com/E45/index.html
> California, USA
> 
> 
> ------------------------------------------------------------------------------
> Virtualization & Cloud Management Using Capacity Planning
> Cloud computing makes use of virtualization - but cloud computing 
> also focuses on allowing computing to be delivered as a service.
> http://www.accelacomm.com/jaw/sfnl/114/51521223/
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------------------------------------------------------------------------------
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing 
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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