[OE-core] [PATCH] busybox: Enable FEATURE_MOUNT_NFS and use libtirpc

[Andre McCurdy]

 On Thu, May 10, 2018 at 12:26 PM, Khem Raj <raj.khem at gmail.com> wrote:
> On 5/10/18 12:16 PM, Martin Jansa wrote:
>>>
>>> On second thought, this probably should be enabled using a config
>>> fragment, since its not gonna link in another library it may not be
>>> common case to justify for a default config.
>>
>> That's true, I've enabled CONFIG_FEATURE_MOUNT_NFS mostly to show how to
>> reproduce the issue.
>>
>> If there isn't interest to enable this by default, I'm fine with keeping
>> this
>> locally (to enable it only with our defconfig changes which enable it).
>
> I think keeping it as a nfsmount.cfg which then can be applied via a
> bbappend could be a good option. May be adding a PACKAGECONFIG to control
> the -I flag and libtirpc dependency would be nice too

According to the busybox config help, CONFIG_FEATURE_MOUNT_NFS is only
required for kernel versions before 2.6.23. Do we officially support
kernels that old in oe-core? Or should this be in a .bbappend etc in
separate layer?

//config:config FEATURE_MOUNT_NFS
//config:    bool "Support mounting NFS file systems on Linux < 2.6.23"
//config:    default n
//config:    depends on MOUNT
//config:    select FEATURE_SYSLOG
//config:    help
//config:    Enable mounting of NFS file systems on Linux kernels prior
//config:    to version 2.6.23. Note that in this case mounting of NFS
//config:    over IPv6 will not be possible.
//config:
//config:    Note that this option links in RPC support from libc,
//config:    which is rather large (~10 kbytes on uclibc).