diff --git a/lemon/config.h.in b/lemon/config.h.in
--- a/lemon/config.h.in
+++ b/lemon/config.h.in
@@ -1,8 +1,26 @@
+/* The version string */
+#undef LEMON_VERSION
+
+/* Define to 1 if you have long long */
+#undef LEMON_HAVE_LONG_LONG
+
+/* Define to 1 if you have any LP solver. */
+#undef LEMON_HAVE_LP
+
+/* Define to 1 if you have any MIP solver. */
+#undef LEMON_HAVE_MIP
+
 /* Define to 1 if you have CPLEX. */
 #undef LEMON_HAVE_CPLEX
 
 /* Define to 1 if you have GLPK. */
 #undef LEMON_HAVE_GLPK
 
-/* Define to 1 if you have long long */
-#undef LEMON_HAVE_LONG_LONG
+/* Define to 1 if you have SOPLEX */
+#undef LEMON_HAVE_SOPLEX
+
+/* Define to 1 if you have CLP */
+#undef LEMON_HAVE_CLP
+
+/* Define to 1 if you have CBC */
+#undef LEMON_HAVE_CBC