linux-kernel - Re: [RFC v2 01/39] Kconfig: introduce HAS_IOPORT option and select it as necessary

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Date:   Sun, 8 May 2022 10:15:31 +1000 (AEST)
From:   Finn Thain <fthain@...ux-m68k.org>
To:     Arnd Bergmann <arnd@...nel.org>
cc:     Niklas Schnelle <schnelle@...ux.ibm.com>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
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        Richard Henderson <rth@...ddle.net>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Matt Turner <mattst88@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Michal Simek <monstr@...str.eu>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
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Subject: Re: [RFC v2 01/39] Kconfig: introduce HAS_IOPORT option and select
 it as necessary


On Sun, 8 May 2022, I wrote:

> 
> That suggests to me that we need a "bool CONFIG_WARINGS_INTO_ERRORS" to 
> control -Werror, which could be disabled for .config files (like make 
> allmodconfig) where it is not helping.
> 

I just noticed that we already have CONFIG_WERROR. So perhaps something 
like this would help.

diff --git a/init/Kconfig b/init/Kconfig
index ddcbefe535e9..765d83fb148e 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -150,6 +150,8 @@ config WERROR
 
 	  However, if you have a new (or very old) compiler with odd and
 	  unusual warnings, or you have some architecture with problems,
+	  or if you are using a compiler that doesn't happen to interpret
+	  the C standards in quite the same way as some other compilers,
 	  you may need to disable this config option in order to
 	  successfully build the kernel.