+namespace
+{
+
+// Small helper function: get the value of the given environment variable and
+// return true only if the variable was found and has non-empty value.
+inline bool wxGetNonEmptyEnvVar(const wxString& name, wxString* value)
+{
+ return wxGetEnv(name, value) && !value->empty();
+}
+
+} // anonymous namespace
+