link error when using getcon

["Clarkson, Mike R \(US SSA\)" <mike clarkson baesystems com>]

Can anyone help me out with this link error?

% g++ -L/usr/lib64 -lselinux -o SimulatedImport SimulatedImport.cc
/tmp/cc2AWYzw.o(.text+0x1ab): In function `main':
: undefined reference to `getcon(char**)'
collect2: ld returned 1 exit status

I thought that all I needed to link in was libselinux.a, located at
/usr/lib64/libselinux.a

I have the following lines in SimulatedImport.cc:
	security_context_t *context = 0;
  	int gcrtn = getcon(context);

Thanks,
  Mike