This patch corrects the use of rpath and export options when compiling on postgres on Unixware with GCC built with gnu-as and gnu-ld.
note:
For those using Unixware and willing to upgrade from the package provided by Caldera to GCC 2.95.3 or GCC 3.0.X, the trick to compile gcc is to build binutil, and compile gcc with-gnu-as and with-gnu-ld options.