Re: [dpdk-dev] [PATCH] devtools: avoid config backup during test build setup

[Thomas Monjalon <thomas@monjalon.net>]

16/12/2019 17:40, Bruce Richardson:
> On Mon, Dec 16, 2019 at 05:22:42PM +0100, Thomas Monjalon wrote:
> > The config options are updated with sed and the short inline option.
> > In FreeBSD, the suffix argument of the inline option is mandatory.
> > In order to avoid creating a backup file when using sed inline,
> > the argument is set as an empty suffix.
> > 
> > The short option '-i' does not expect '=' before the suffix argument,
> > so it understands '=' as the file suffix.
> > As a consequence, a backup file named '.config=' was created
> > in the build directory.
> > 
> > Removing the '=' sign while keeping an empty suffix
> > avoids creating a backup file.
> > 
> > Fixes: 4a4a20c4775b ("devtools: support FreeBSD")
> > Cc: olivier.matz@6wind.com
> > Cc: stable@dpdk.org
> > 
> > Reported-by: Ali Alnubani <alialnu@mellanox.com>
> > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> > ---
> > 
> > This patch does not work on FreeBSD.
> > Does it mean the equal sign is required on FreeBSD?
> > This is not what I see on the documentation:
> > https://www.freebsd.org/cgi/man.cgi?query=sed&sektion=&n=1
> > 
> > ---
> 
> It appears it is needed, which is why the "=" was added in the first place.
> See commit: 4a4a20c4775b ("devtools: support FreeBSD"), by Olivier
> 
> Is having the backup file a big issue?

No it's not a big issue.
But I really would like to know how to have a common behaviour on BSD an Linux
for a thing as simple as "sed -i" !
And why the mandatory "=" is not documented on FreeBSD?

It cannot be so much broken. We probably miss something...