[dpdk-dev] [RFC PATCH] mk: symlink every headers first

[Bruce Richardson]

On Tue, Jun 20, 2017 at 11:21:39PM +0200, Thomas Monjalon wrote:
> If a library or a build tool uses a definition from a driver,
> there is a build ordering issue, like seen when moving PCI code
> into a bus driver.
> 
> One option is to keep PCI helpers and some common definitions in EAL.
> The other option is to symlink every headers at the beginning of
> the build so they can be included by any other component.
> 
> This patch shows how to achieve the second option.
> 
> Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
> ---

My 2c.

This may be worth doing, however, two points to consider.

1. If we look to change build system this may not be worth doing unless
a compelling need becomes obvious in the short term. In the meantime,
for cases where it is needed...
2. libraries can already access the includes from drivers or other
places fairly easily, just by adding the relevant "-I" flag to the
CFLAGS for that lib.

That said, since the work is already done developing this, and if it
doesn't hurt in terms of build time, I suppose we might as well merge
it in.

So tentative ack from me, subject to testing and feedback from others.

/Bruce