Re: Hi, Glade problem (another question)

["M. Craig" <mcra98 esc cam ac uk>]

On Sat, 17 Mar 2001, Ralf Corsepius wrote:

> > A bit OT, but could anyone explain to me why the -g option is enabled
> > by default in configure scripts. 
> The autoconf default is -g -O2.
>
> This is a compromise between the demands wrt. optimization and the
> ability to be able to debug.
>
> > I didn't notice until recently, I was
> > left wondering why things I compiled from source had such large filesizes
> > and ran so slowly.
> -g -O2 compiled binaries normally are not significantly slower than
> -O2 compiled binaries (unless your machine starts swapping due to
> the additional overhead in size). 

Perhaps it was my imagination then. I upgraded my gnome and gtk libraries
from source and I'm fairly sure it had a significant effect on performance
until I recompiled. Perhaps it was swapping like you say. Also I've used
-g on Fortran compilers where it also implies no optimisation, so I
assumed it was the same with gcc (not the case as the man page tells
me...)

> > even when developing I've not yet needed to wheel out the debugger.
> Then there still might be things to discover for you :)

Undoubtedly!

I've only used a debugger once (on someone elses code). It's going to
take a lot to get me to do it again :)

Oh well, thanks for reassuring me that it's not completely brainless,
though I think I'll stick to turning it off by default in my code!

Martin.