-----Original Message-----
From: Bruce Richardson <bruce.richard...@intel.com>
Sent: Wednesday, May 3, 2023 11:18 AM
To: Gilbert Carrillo <gcarri...@ampex.com>
Cc: dev@dpdk.org
Subject: Re: DPDK 22.11 Troubleshooting
On Wed, May 03, 2023 at 04:53:20PM +0000, Gilbert Carrillo wrote:
> Make static returns an error (see attached).
>
> v/R,
> Gilbert
>
To help investigate this issue, can you perhaps include the text of the full
build output when you run "make static". On my system I see libelf listed on
the linker flags when I run "make static", and things link properly. I'm
wondering how my setup may differ from yours.
/Bruce
> -----Original Message-----
> From: Bruce Richardson <bruce.richard...@intel.com>
> Sent: Wednesday, May 3, 2023 10:35 AM
> To: Gilbert Carrillo <gcarri...@ampex.com>
> Cc: dev@dpdk.org
> Subject: Re: DPDK 22.11 Troubleshooting
>
> On Wed, May 03, 2023 at 04:22:05PM +0000, Gilbert Carrillo wrote:
> > Hi Bruce,
> >
> > Thank you for the response.
> >
> > There is no errors when I run the makefile, however I do see a difference
> > in the programs. I don't believe the makefile is linking all the libraries
> > together as intended.
> >
> > For example, when I run the ethtool sample program and compile it using
> > meson, it works fine and rte_eth_dev_count_avail() returns the correct
> > amount. However, when I compile ethtool with the makefile and run it
> > rte_eth_dev_count_avail() returns 0.
> >
>
> Note that by default the meson build will statically link the examples, while
> the makefile will dynamically load the drivers at runtime. That may explain
> the difference. Can you try building and running using "make static" rather
> than just "make".
>
> /Bruce
Bruce,
I had multiple versions of DPDK installed and I was linking the wrong one. I
was able to compile my application with CMAKE successfully.
I had one last quick question. I am trying to achieve zero copy DMA from my
FPGA to my external buffer. Is this possible? I saw methods such as attaching
an mbuf to the external buffer? But I wasn't sure if this was truly zero copy.
-Gilbert
