linux-kernel - Re: [RFC PATCH] kbuild: add -fno-PIE

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Date:   Sun, 23 Oct 2016 12:23:18 -0700
From:   Joe Perches <joe@...ches.com>
To:     Sven Joachim <svenjoac@....de>, Adam Borowski <kilobyte@...band.pl>
Cc:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Michal Marek <mmarek@...e.com>, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org, ben@...adent.org.uk
Subject: Re: [RFC PATCH] kbuild: add -fno-PIE

On Sun, 2016-10-23 at 18:19 +0200, Sven Joachim wrote:
> On 2016-10-21 23:21 +0200, Adam Borowski wrote:
> > On Fri, Oct 21, 2016 at 01:16:00PM +0200, Sebastian Andrzej Siewior wrote:
> > > Debian started to build the gcc with --enable-default-pie by default
[]
> > > diff --git a/Makefile b/Makefile
[]
> > > @@ -398,7 +398,7 @@ KBUILD_CPPFLAGS := -D__KERNEL__
> > >  KBUILD_CFLAGS   := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
> > >  		   -fno-strict-aliasing -fno-common \
> > >  		   -Werror-implicit-function-declaration \
> > > -		   -Wno-format-security \
> > > +		   -Wno-format-security -fno-PIE \
> > >  		   -std=gnu89

I've used this here instead:

KBUILD_CFLAGS  += $(call cc-option,-fno-pie)