[dpdk-stable] [PATCH v2] kernel/linux: fix kernel dir for meson

[Bruce Richardson]

On Tue, Dec 03, 2019 at 08:33:22PM +0800, Ye Xiaolong wrote:
> On 12/03, Bruce Richardson wrote:
> >On Tue, Dec 03, 2019 at 01:29:17PM +0800, Xiaolong Ye wrote:
> >> kernel_dir option in meson build is equivalent to RTE_KERNELDIR in make
> >> system, for cross-compilation case, users would specify it as local
> >> kernel src dir like
> >> 
> >> /<user local dir>/target-arm_glibc/linux-arm/linux-4.19.81/
> >> 
> >> Current meson build would fail to compile kernel module if user specify
> >> kernel_dir as above, this patch fixes this issue.
> >> 
> >> Fixes: 317832f97c16 ("kernel/linux: fix modules install path")
> >> Cc: stable at dpdk.org
> >> Cc: iryzhov at nfware.com
> >> 
> >> Signed-off-by: Xiaolong Ye <xiaolong.ye at intel.com>
> >> ---
> >> 
> >> V2 changes:
> >> 
> >> 1. handle both normal and cross-compilation cases
> >> 
> >We need to handle both, but they need to be handled without breaking the
> >currently working case where we pass in /lib/modules/$(uname -r)/ as the
> >kerneldir path.
> 
> So you mean we should allow user to specify both /lib/modules/$(uname -r) and
> /lib/modules/$(uname -r)/build as kernel_dir for normal case?
> 
That is up to you, but we need to still allow the former case so as to
avoid breaking backward compatibility for existing build setups. Therefore
I suggest supporting both is recommended.

/Bruce