[U-Boot-Users] Non-static global variables cause relocation to fail

[Wolfgang Denk]

In message <485AA905.9030907 at freescale.com> you wrote:
> I tried to find documentation on this, but couldn't.
> 
> I've discovered, on PowerPC 85xx systems at least, that the mere presence of a
> non-static global variable, even if it isn't used by any code, will cause
> relocation to fail.  Exactly how it fails, I can't say, but U-Boot does hang.
> 
> If I make the global variable static, the problem goes away.  Note that I have
> no code that actually references the variable.  It just sits there, occupying space.
> 
> Fortunately, the data structure doesn't need to be non-static.  I just forgot to
> put 'static' in its definition.  Of course, it would have been nice to know this
> up front.
> 
> Can someone explain why this is the case?  Do I need to do anything special in
> my code to access global variables, static or not static?

You  don't  seriously  expect  any  real  help  given  such  a  vague
description?  It  would be somewhat helpful if you said exactly which
changes cause the code to work or fail...

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
I am not now, nor have I ever been, a member of the demigodic party.
                                                   -- Dennis Ritchie