diff --git a/tools/configure b/tools/configure
index 9ff6affd25..b66a015564 100755
--- a/tools/configure
+++ b/tools/configure
@@ -8,7 +8,7 @@
 #
 
 # global CC options for all platforms
-CCOPTS="-W -Wall -Wextra -Wundef -Os -nostdlib -ffreestanding -Wstrict-prototypes -pipe -std=gnu99 -funit-at-a-time -fno-delete-null-pointer-checks -fno-strict-overflow"
+CCOPTS="-W -Wall -Wextra -Wundef -Os -nostdlib -ffreestanding -Wstrict-prototypes -pipe -std=gnu99 -funit-at-a-time -fno-delete-null-pointer-checks -fno-strict-overflow -fno-common"
 
 # LD options for the core
 LDOPTS=""