diff --git a/configure b/configure
index a17bc8445e..dda6fab3ef 100755
--- a/configure
+++ b/configure
@@ -1785,6 +1785,8 @@ check_cflags -Wpointer-arith
 check_cflags -Wredundant-decls
 check_cflags -Wno-pointer-sign
 check_cflags -Wcast-qual
+check_cflags -Werror=declaration-after-statement
+check_cflags -Werror=pointer-arith
 enabled extra_warnings && check_cflags -Winline
 
 # add some linker flags