Re: how to turn off PIE on Fedora?

[Daniel Berlin <dberlin at dberlin dot org>]

On Dec 12, 2003, at 9:22 PM, Per Bothner wrote:

> Can any Red Hat engineers shed light on this:
>
> Data seems to move around unpredictably under Fedora Core.
> I.e. I run cc1 under gdb to a breakpoint or error, and note
> the memory address of some variable.  I then re-run cc1 with
> no changes, and the variable has jumped to a different address.
> This complicates debugging, and specifically setting conditional
> breakpoints.
>
> This presumably is because of PIE "position independent
> executables", which is supoosed to increase security.  Fine -
> but how can I turn it off for development builds?
>
> PIE also breaks PCH, and hence running the gcc testsuite.

[root@dberlin bin]# grep exec-shield /etc/sysctl.conf
kernel.exec-shield = 0
kernel.exec-shield-randomize = 0


(throwing it in sysctl.conf makes it automatically do it for you on 
bootup, you'll still have to sysctl -w these manually if you don't want 
to reboot)