diff --git a/configure/CONFIG.gnuCommon b/configure/CONFIG.gnuCommon
index 8013963b3..a9dbd7f91 100644
--- a/configure/CONFIG.gnuCommon
+++ b/configure/CONFIG.gnuCommon
@@ -43,6 +43,6 @@ OPT_CXXFLAGS_NO = -g
 STATIC_LDFLAGS_YES = -static
 STATIC_LDFLAGS_NO =
 
-SHRLIB_LDFLAGS_YES =  -shared
-SHRLIB_LDFLAGS_NO =
+SHRLIB_LDFLAGS_YES +=  -shared
+SHRLIB_LDFLAGS_NO +=