diff --git a/make/tools.mk b/make/tools.mk
index 830bba58..be0b06a6 100644
--- a/make/tools.mk
+++ b/make/tools.mk
@@ -8,5 +8,8 @@ include $(MODDIR)/make/targets-tools.mk
 include $(MODDIR)/make/depend.mk
 include $(MODDIR)/make/backup.mk
 
+LOCAL_CFLAGS     += -D_USRDLL -DALL_EXPORTS
+LOCAL_CPPFLAGS   += -D_USRDLL -DALL_EXPORTS
+
 all: all.done