diff --git a/lemon/config.h.cmake b/lemon/config.h.cmake
--- a/lemon/config.h.cmake
+++ b/lemon/config.h.cmake
@@ -1,3 +1,4 @@
-#cmakedefine HAVE_LP 1
-#cmakedefine HAVE_MIP 1
-#cmakedefine HAVE_GLPK 1
+#cmakedefine HAVE_LONG_LONG 1
+#cmakedefine HAVE_LP 1
+#cmakedefine HAVE_MIP 1
+#cmakedefine HAVE_GLPK 1