What does this error mean. Python and GCC

[Bernt Hansson]

On 2015-03-18 17:59, bob carr wrote:
> Are you building math/py-numpy from Ports?  If so, you might resolve the
> error by  modifying the Makefile -  adding to the LDFLAGS+= entry the
> string '-Wl,-rpath=/usr/local/lib/gcc48'.
>
> *Before edit:*  LDFLAGS+=       -shared
>
> ​*After edit:* ​LDFLAGS+=       -shared -Wl,-rpath=/usr/local/lib/gcc48

Same error as before.
ImportError: /lib/libgcc_s.so.1: version GCC_4.6.0 required by 
/usr/local/lib/gcc48/libgfortran.so.3 not found