Glib 2.10.2 compiling problem

[Craig Davis <craigwd2000 gmail com>]

When I type which g77 I get /usr/local/bin/g77.  Though I'm positive I 
also have your pre-compiled version installed at /usr/local/lib too.  I 
just tried compiling Glib too.  It refuses to compile.  Here's the 
important output I got when running Glib's configure script:
checking for a sed that does not truncate output... dyld: Library not 
loaded: /usr/local/lib/libiconv.2.dylib
 Referenced from: /usr/local/lib/libintl.3.dylib
 Reason: Incompatible library version: libintl.3.dylib requires version 
6.0.0 or later, but libiconv.2.dylib provides version 5.0.0
./configure: line 7896: 28850 Trace/BPT trap          $lt_ac_sed -e 
's/a$//' <conftest.nl >conftest.out
I also got this error message at the very end too:
checking size of char... configure: error: cannot compute sizeof (char), 
77.  What does all of this mean?