r288669 breaks ports building with USE_GCC=yes

[Gerald Pfeifer]

On Sun, 8 Nov 2015, Pedro Giffuni wrote:
> Great! We already worked around the issue by disabling 
> stack-protector-strong for gcc48 though. 

Yep - it still felt like the right thing to also address this in the port.

> What looks somewhat strange to me is that lang/gcc is an independent 
> port when it should just be a link to the current gcc default.

This is the direction I'm working towards by establishing lang/gccX-devel 
ports (for snapshots) in addition to ang/gccX ports (for releases).

> BTW, perhaps it’s time to bump the default gcc to gcc49? ;).

Absolutely.

Sadly there is a fair amount of broken software out there, and while 
we are close, having to fix/work around all of that has been delaying 
things.

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196712 .

In case you (or anyone else) want to help, I created a couple of
bug reports that now are marked as blocking this upgrade.  Help
definitely appreciated.

Gerald