linux-kernel - Re: Failing randconfig builds with CONFIG_TRIM_UNUSED

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Message-ID: <3925577.oSPyrRVJmt@wuerfel>
Date:	Thu, 28 Apr 2016 23:20:47 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Nicolas Pitre <nicolas.pitre@...aro.org>
Cc:	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: Re: Failing randconfig builds with CONFIG_TRIM_UNUSED_KSYMS

On Thursday 28 April 2016 16:56:23 Nicolas Pitre wrote:
> On Thu, 28 Apr 2016, Arnd Bergmann wrote:
> Well, the actual explanation is that this module uses only one symbol. 
> And when only one symbol was listed, it got ignored.
 
Ok.

> 
> Now fixing this wasn't all that obvious either.  I had a really nice sed 
> rule to parse multiple instances per line, but sed regexp can only do 
> greedy matching. I found out how people work around that limitation but 
> that doesn't work well for string delimiters.
> 
> In the end the best workaround is simple: substitute any ';' with '\n':

Wow, I could have spent days trying to figure these out, glad I gave
up earlier ;-)

I've applied both patches locally now, and have successfully built
all the configurations that failed before. I'll let you know if something
else should come up.

Thanks,

	Arnd