[dpdk-dev] [PATCH v3] kernel/linux: fix kernel dir for meson

[Ye Xiaolong]

On 12/04, Luca Boccassi wrote:
>On Tue, 2019-12-03 at 23:59 +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.
>> 
>> After this change, for normal build case, user can specify
>> /lib/modules/<kernel_version> or /lib/modules/<kernel_version>/build
>> as
>> kernel_dir. For cross compilation case, user can specify any
>> directory
>> that contains kernel source code as the kernel_dir.
>> 
>> 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
>
>The convention used by upstream and all distros is that kernel headers
>are in <version>/build. Why can't the cross compilation case also
>follow this convention, rather than adding complications to the

Yes, cross-compilation can follow this convention, but one common case is that
users download and put kernel src (the same kernel that's running in the target machine)
to one arbitrary dir, he then use this dir as kernel_dir to build kernel modules,
it's extra burden for users to create extra build dir to hold the kernel headers.

Thanks,
Xiaolong

>downstream build system?
>
>-- 
>Kind regards,
>Luca Boccassi