Constant initializers

[Matt Fischer]

I'm attempting to port some code to gcc, and in a couple of places
it's using a construct that it doesn't like.  A simplified example is
the following (this is in global scope):

static const int A = 1;
static const int B = A;

This compiles fine with g++, but gcc says "error: initializer element
is not constant".  The compiler this code used to use handles it fine,
and given that it's also legal in C++, I was wondering if anybody
could comment on the (il)legality of this construct.  Does the C spec
simply say that one can never use a variable to initialize another
global variable, regardless of whether or not it's constant?  Is there
some way to convince gcc to accept this syntax?  I tried various
values for --std and couldn't seem to find any that worked.

Thanks,
Matt