[oe] prevent -O0 for glibc builds?

[Khem Raj]

On Thu, 2008-07-10 at 15:58 +0200, Robert Schuster wrote:
> Hi,
> recently I set the (debug) optimization flags to "-g -O0" (= really
> no-optimization and full debug infos) and got an error from the glibc
> builds because glibc's configury told me that it cannot be compiled with
> no optimization.
> 
> Would it be possible that the glibc recipes replace -O0 with something
> else and print a note about this instead of failing? The reason is that
> the current behavior prevents me from compiling a whole image without
> optimization.
> 
> The reason I want -O0 in the first place is that while debugging an
> executable gdb told me that certain variables where optimized out.

glibc expects some optimizations like inlining for loader's early
startup code because it can not make function calls as the PLT has not
yet been relocated.

Thx

-Khem

> 
> Regards
> Robert
> 
> 
> 
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