-set(includeflag "-I${CMAKE_INSTALL_INCLUDEDIR} -I${CMAKE_INSTALL_INCLUDEDIR}/smpi")
-set(includedir "${CMAKE_INSTALL_INCLUDEDIR}")
-set(libdir "${CMAKE_INSTALL_LIBDIR}")
+set(includeflag "-I${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR} -I${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}/smpi")
+set(includedir "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}")
+set(libdir "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")