For extensions that do not utilize PGXS, but utilize the interface of Fujitsu Enterprise Postgres, build to explicitly set DT_RUNPATH, or set LD_LIBRARY_PATH to <Fujitsu Enterprise Postgres installation directory>/lib at runtime.
For information about how to set DT_RUNPATH, refer to "Setting DT_RUNPATH for Applications" in the Application Development Guide.
For notes on using LD_LIBRARY_PATH without setting DT_RUNPATH, refer to "When DT_RUNPATH cannot be set" in "How to Build and Run an Application that Uses Shared Libraries" in the Application Development Guide.