Fix shared library creation flag for XL on Linux

See issue #9617.

Modules/Platform/Linux-XL-C.cmake

@@ -1,2 +1,3 @@
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
+SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-qmkshrobj")

Modules/Platform/Linux-XL-CXX.cmake

@@ -2,4 +2,4 @@ SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
-SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-qmkshrobj")
+SET(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS "-qmkshrobj")

Modules/Platform/Linux-XL-Fortran.cmake

@@ -1,2 +1,3 @@
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
+SET(CMAKE_SHARED_LIBRARY_CREATE_Fortran_FLAGS "-qmkshrobj")