Re: [dpdk-dev] dev Digest, Vol 139, Issue 35

Re: [dpdk-dev] dev Digest, Vol 139, Issue 35

[reshma sarat]

Yes, as you said I had copied the header files to a location that is in
some way packagable with your application. But it didn't work even after I
had copied the rte_config.h file. Now I have removed the header files from
the location and included them using -I directives in the makefile of my
application. On building DPDK, no error is obtained. But after setting the
source and target and running the makefile of my application, I am getting
the same error as:-

/root/dpdk-stable-16.07.2/lib/librte_eal/common/include/rte_memory.h:83:2:
error: #error "Unsupported cache line size".

I have checked my cacheline size using

/sys/devices/system/cpu/cpu0/cache/coherency_line_size in which the size is 64.

Is there any dependency on the system in which I am running the
application. Since I am
running my application in 32-bit system.


Message: 5

> Date: Tue, 11 Apr 2017 08:34:40 -0400
> From: Neil Horman <nhorman@tuxdriver.com>
> To: reshma sarat <reshmasarat@gmail.com>
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] Integration of DPDK with a seperate
>         application
> Message-ID: <20170411123439.GA20485@hmswarspite.think-freely.org>
> Content-Type: text/plain; charset=us-ascii
>
> On Tue, Apr 11, 2017 at 05:44:50PM +0530, reshma sarat wrote:
> > Hi,
> > In my application, I am making use of DPDK APIs for sending and receiving
> > packets. I have now imported some of its header files of DPDK to my
> > application. But on executing make command, an error such as
> > :/rte_memory.h:83:2: error: #error "Unsupported cache line size"
> >  is what I am getting. How to overcome this error?
> > Regards,
> > Reshma
> >
>
> I assume by exporting, you mean moving the header files to a location that
> is in
> some way packagable with your application?
>
> Don't do that.
>
> the DPDK header files rely on their heirarchy to work properly.  You could
> move
> the rte_config.h file, which is what you are missing in this case, to
> define the
> proper cache line size for the system on which you are building, but the
> correct
> solution is to independently install the DPDK on your devel system, and
> include
> those dpdk header files with -I directives
>
> Neil
>
>
>
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