ENH: try to fix rpath on qnx

Modules/Platform/QNX.cmake

@@ -5,7 +5,7 @@ SET(CMAKE_DL_LIBS "")
 SET(CMAKE_SHARED_LIBRARY_C_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_CXX_FLAGS "")
 SET(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared")
-SET(CMAKE_SHARED_LIBRARY_RUNTIME_FLAG "-Wl,-rpath,")
-SET(CMAKE_SHARED_LIBRARY_RUNTIME_FLAG_SEP ":")
+SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")
+SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":")
 SET(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-Wl,-soname,")
 SET(CMAKE_SHARED_LIBRARY_SONAME_CXX_FLAG "-Wl,-soname,")