linux-kernel - Re: [PATCH 1/1 linux-next] kbuild: add make force=1 for testing

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Date:	Tue, 26 Jul 2016 08:45:17 +0200
From:	Robert Jarzmik <robert.jarzmik@...e.fr>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Fabian Frederick <fabf@...net.be>, Michal Marek <mmarek@...e.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1 linux-next] kbuild: add make force=1 for testing

Andrew Morton <akpm@...ux-foundation.org> writes:

> On Sun, 24 Jul 2016 15:28:18 +0200 Fabian Frederick <fabf@...net.be> wrote:
>
>> Commit 51193b76bfff
>> ("kbuild: forbid kernel directory to contain spaces and colons")
>> 
>> makes it impossible to build kernel on default SD labels like
>> "SD Card" for instance.
>> 
>> Makefile:133: *** main directory cannot contain spaces nor colons.  Stop.
>> 
>> User could rename directories but volume name is not always writable.
>> 
>> This patch adds ability to do make force=1 for people
>> not interested in modules_install in this case but only testing.
>> 
>> (Note that other options could go under ifndef force)
>
> That's a bit of a hack on a hack.
>
> 51193b76bfff said:
>
> :    When the kernel path contains a space or a colon somewhere in the path
> :    name, the modules_install target doesn't work anymore, as the path names
> :    are not enclosed in double quotes. It is also supposed that and O= build
> :    will suffer from the same weakness as modules_install.
> :    
> :    Instead of checking and improving kbuild to resist to directories
> :    including these characters, error out early to prevent any build if the
> :    kernel's main directory contains a space.
>
> What's involved in fixing this properly?  Make the whole kbuild
> system operate correctly when there are spaces/colons in the
> pathname?

I was thinking originally fixing it by :
	http://www.spinics.net/lists/linux-kbuild/msg12036.html

This fixed "properly" the make modules_install I think.
And Marek pointed out that there were other cases, such as O=/my dir/ but not
limited to, where it would also break, hence this patch.

I'm not a kbuild expert so I'd like someone else (Marek) to enumerate the
remaining cases not covered by the original patch.

Cheers.

-- 
Robert