[OE-core] [PATCH] insane: detect and warn about relocations in .text

[Phil Blundell]

On Wed, 2012-10-03 at 12:31 +0200, Martin Jansa wrote:
> On Wed, Oct 03, 2012 at 11:24:12AM +0100, Phil Blundell wrote:
> > Signed-off-by: Phil Blundell <pb at pbcl.net>
> 
> Can you add a bit longer description of possible issues with relocations
> in .text? So that people seeing this issue will know how dangerous it is
> for them?
> 
> From my understanding (after reading
> http://www.gentoo.org/proj/en/hardened/pic-fix-guide.xml) it's mostly
> performance issue?

Yes, that's correct.  It basically falls into the same sort of category
as useless-rpaths; the binary will still work, but there will be some
adverse impact on performance and memory usage.  

Historically, the most common cause of DT_TEXTREL was accidentally
linking non-PIC code into a DSO.  Recent versions of the linker will
flatly refuse to do this on at least some architectures, though, so
hopefully this problem will just go away over time.

p.