base fails to build - exception problem

[Riccardo Mottola]

Hi,

I'm rebuilding core libraries after the last changes.
I am building with gcc5, I extra specify that in the make command line:

$ ./configure --with-layout=gnustep --prefix=/ CC=gcc5 CXX=g++5
LDFLAGS=-Wl,-rpath=/usr/local/lib/gcc5

When building base I get:

NSException.m: In function '+[NSException initialize]':
NSException.m:818:3: error: '_objc_unexpected_exception' undeclared
(first use in this function)
   _objc_unexpected_exception = callUncaughtHandler;

this was working about 2 months ago, perhaps even more recent. I fear
it has to do with the recent changes.
On other computers I use gcc 3 and 4, so it is not that gcc build is
broken generally.
What is going wrong?

Riccardo