Re: Any benefit of using DPDK's makefiles instead of using your own and linking against DPDK library

[Thomas Monjalon <thomas.monjalon-pdR9zngts4EAvxtiuMwx3w@public.gmane.org>]

Hello Venky,

14/01/2014 14:22, Venkatesan, Venky:
> From: dev [mailto:dev-bounces-VfR2kkLFssw@public.gmane.org] On Behalf Of Thomas Monjalon
> > 14/01/2014 08:02, Daniel Kan:
> > > I already have existing makefiles for my current application. I would
> > > like to integrate dpdk into the application.  ’m wondering if there is
> > > any benefit to use dpdk’s makefiles instead of using your own makefile
> > > and linking against the library (e.g. libintel_dpdk.a). Thanks.
> > 
> > DPDK makefiles have 2 benefits:
> > - provide a framework
> > - automatically set CFLAGS and LDFLAGS according to your configuration
> > 
> > If you don't need a framework, I think it's better to extract compilation
> > flags with something like pkg-config.
> > http://freedesktop.org/wiki/Software/pkg-config
> > A patch for a such feature would be welcome :)
>
> One other thing to think about - as we add more functionality into DPDK
> (e.g. new libraries for other packet functions), we integrate them into
> the DPDK framework. If you extract compilation flags and setup your own
> makefile, you would have to do this re-integration every time you want to
> pick up a new release. The same applies to newer files added etc. etc.
> That is the downside.

I disagree.
If the Makefile of the application, use a DPDK script or pkg-config to read 
the flags from a generated file, the integration is done only once.
This guide explains the logic and how to implement it:
	http://people.freedesktop.org/~dbn/pkg-config-guide.html

-- 
Thomas