-set(includeflag "-I${CMAKE_INSTALL_PREFIX}/include -I${CMAKE_INSTALL_PREFIX}/include/smpi")
-set(includedir "${CMAKE_INSTALL_PREFIX}/include")
-set(libdir ${exec_prefix}/lib)
-set(CMAKE_SMPI_COMMAND "export LD_LIBRARY_PATH=\"${CMAKE_INSTALL_PREFIX}/lib")
+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}")
+set(CMAKE_SMPI_COMMAND "export LD_LIBRARY_PATH=\"${CMAKE_INSTALL_LIBDIR}")