is it a good idea to overwrite GCC_DEFAULT_VERSION= in Mk/bsd.gcc.mk?

[Anton Shterenlikht]

	From andrew.w.nosenko at gmail.com Mon Mar 25 18:09:38 2013

	On Mon, Mar 25, 2013 at 5:59 PM, Gerald Pfeifer <gerald at pfeifer.com> wrote:
	> On Mon, 25 Mar 2013, Anton Shterenlikht wrote:
	>> I've now run ia64 with the above change for over 2 weeks,
	>> mostly rebuilding ports, etc.
	>> I didn't see any issues with gcc47.
	>> So, from my very limited testing,
	>> gcc47 can be made default.
	>
	> Thanks for the feedback, Anton!  To really make that switch
	> globally, we'll need more extensive testing, a full ports builds
	> run, since there is a chance that some port you are not using may
	> be broken, and I hope to get this done in the coming weeks.

	>From my expiriense, devel/glib20 cannot be compiled with gcc47.

Isn't it built with the system default compiler:

configure:3954: checking for C compiler version
configure:3963: cc --version >&5
cc (GCC) 4.2.1 20070831 patched [FreeBSD]

I think we are only talking about updating lang/gcc to 4.7.

Anton