metrics/windows: build rte_metrics library

  From: Tyler Retzlaff <roretzla@microsoft.com>

declare reduced set of exports for rte_metrics on windows and include
it in the set of libraries to build and install.

rte_metrics_tel* exports depend on conditionally available component.
this change minimally allows enabling the building of rte_metrics on
windows.

Signed-off-by: Tyler Retzlaff <roretzla@microsoft.com>
---
 lib/librte_metrics/rte_metrics_exports.def | 8 ++++++++
 lib/meson.build                            | 1 +
 2 files changed, 9 insertions(+)
 create mode 100644 lib/librte_metrics/rte_metrics_exports.def
  

+ Pallavi, Khoa

On Mon, 11 Jan 2021 15:37:26 -0800, Tyler Retzlaff wrote:
> From: Tyler Retzlaff <roretzla@microsoft.com>
> 
> declare reduced set of exports for rte_metrics on windows and include
> it in the set of libraries to build and install.
> 
> rte_metrics_tel* exports depend on conditionally available component.
> this change minimally allows enabling the building of rte_metrics on
> windows.

What's the future plan? Once we talked about a script that would inspect
objects and filter missing functions from the list in .map to build .def. Is
MSFT working on it? Or do we choose another way?

> --- /dev/null
> +++ b/lib/librte_metrics/rte_metrics_exports.def
> @@ -0,0 +1,8 @@
> +EXPORTS
> +	rte_metrics_get_names
> +	rte_metrics_get_values
> +	rte_metrics_init

+ rte_metrics_deinit

> +	rte_metrics_reg_name
> +	rte_metrics_reg_names
> +	rte_metrics_update_value
> +	rte_metrics_update_values
  

On Tue, Jan 12, 2021 at 04:15:34AM +0300, Dmitry Kozlyuk wrote:
> + Pallavi, Khoa
> 
> What's the future plan? Once we talked about a script that would inspect
> objects and filter missing functions from the list in .map to build .def. Is
> MSFT working on it? Or do we choose another way?

MSFT has a task tracking work to resolve this. We agree it is cumbersome to
try and keep the .map and .def files in sync by hand.
  

> Subject: Re: [dpdk-dev] [PATCH] metrics/windows: build rte_metrics library
> 
> On Tue, Jan 12, 2021 at 04:15:34AM +0300, Dmitry Kozlyuk wrote:
> > + Pallavi, Khoa
> >
> > What's the future plan? Once we talked about a script that would
> > inspect objects and filter missing functions from the list in .map to
> > build .def. Is MSFT working on it? Or do we choose another way?
> 
> MSFT has a task tracking work to resolve this. We agree it is cumbersome to
> try and keep the .map and .def files in sync by hand.

Is there a DD to complete this task? Dmitry already sent an email with the details on how to resolve it using DUMPBIN.