OT: Why -g when compiling

[Michael Hudson]

"Martin v. Löwis" <martin at v.loewis.de> writes:

> Michael Hudson wrote:
> 
> > True.  I don't know if the various linkers around are smart enough to
> > not load debugging information until it's asked for...
> 
> Atleast on Unix, not mapping debug information at run time has a long
> tradition. In ELF, each section has a LOAD flag indicating whether
> a section needs to be mapped or not. So the ELF dynamic loader does
> not specifically know to omit debug information, but only loads
> sections that the static linker told it to.

That makes sense.  I also guess that as shared libraries are mmaped
into the applications address space they won't use physical memory
until referenced anyway.  But relocations probably mess with that.

Cheers,
mwh

-- 
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