[Xorp-hackers] More build fuzz. -O1.

[Bruce Simpson]

I notice we aren't even building with -O1 in the default case.

This is probably the suck for template expansions, although I haven't 
measured the gristle.
A simple std::vector<uint8_t> example does generate a lot of gristle, I 
speculate we probably see the same in most builds.

Given that we're usually building shared libraries, we probably want to 
combine template expansions as much as possible.

I noticed this week also that the FreeBSD base g++ doesn't install with 
collect2 by default. Normally, this means faster linking, but it does 
break -frepo, which can be used to control template expansion a fair 
bit; it normally relies on the .gnu.linkonce* and section-per-function 
behaviour of the linker on that system.

Just a thought. I'm paying attention to size, because of the patches I 
posted for Thrift this week, and I was very careful to benchmark the 
size of my proposed additions to their library.

cheers,
BMS