I am attempting to compile Guile 1.8.3 on my OS X Leopard/Intel box, and 
the ./configure script halts here:

checking for __gmpz_init in -lgmp... no
configure: error: GNU MP not found, see README

I in fact have Gnu MP 4.2.2 installed in /usr/local/lib, as shown:

-rwxr-xr-x  1 root  wheel  274052 Nov 23 03:36 
/usr/local/lib/libgmp.3.4.2.dylib
lrwxr-xr-x  1 root  wheel      18 Nov 23 03:36 
/usr/local/lib/libgmp.3.dylib -> libgmp.3.4.2.dylib
-rw-r--r--  1 root  wheel  515264 Nov 23 03:36 /usr/local/lib/libgmp.a
lrwxr-xr-x  1 root  wheel      18 Nov 23 03:36 
/usr/local/lib/libgmp.dylib -> libgmp.3.4.2.dylib
-rwxr-xr-x  1 root  wheel     797 Nov 23 03:36 /usr/local/lib/libgmp.la

Anybody know what the problem could be?