diff --git a/configure.ac b/configure.ac
index 69f35e278..2cd8b4d4f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -855,6 +855,7 @@ main (void)
   esac
 fi
 
+AC_CACHE_SAVE
 
 dnl GMP tests
 AC_LIB_HAVE_LINKFLAGS([gmp],