bug#18784: Coultdn't compile emacs-24.4

[Eli Zaretskii]

> From: Stefan Monnier <monnier@IRO.UMontreal.CA>
> Cc: ulm@gentoo.org, 18784@debbugs.gnu.org
> Date: Mon, 16 Mar 2015 14:19:43 -0400
> 
> > Anyway, please don't make that effective for every supported system;
> > e.g., I think it's wrong to do that for Windows, which always produces
> > PIE code.
> 
> Hmm... so maybe the core of the problem is not PIE and -nopie just ends
> up preventing something else (e.g. some kind of address space
> randomization of the code).

I think we don't really understand why this bug happens.  At least I
have no clear idea of how PIE can cause temacs segfault.