diff --git a/tools/Makefile.export b/tools/Makefile.export
index 071dbaa1b2..90397e8991 100644
--- a/tools/Makefile.export
+++ b/tools/Makefile.export
@@ -74,6 +74,7 @@ endif
 	@echo "ARCHWARNINGS=\"$(ARCHWARNINGS)\"" >> $(EXPORTDIR)/makeinfo.sh
 	@echo "ARCHWARNINGSXX=\"$(ARCHWARNINGSXX)\"" >> $(EXPORTDIR)/makeinfo.sh
 	@echo "ARCHOPTIMIZATION=\"$(ARCHOPTIMIZATION)\"" >> $(EXPORTDIR)/makeinfo.sh
+	@echo "WINTOOL=\"$(WINTOOL)\"" >> $(EXPORTDIR)/makeinfo.sh
 	@echo "CROSSDEV=\"$(CROSSDEV)\"" >> $(EXPORTDIR)/makeinfo.sh
 	@echo "CC=\"$(CC)\"" >> $(EXPORTDIR)/makeinfo.sh
 	@echo "CXX=\"$(CXX)\"" >> $(EXPORTDIR)/makeinfo.sh
diff --git a/tools/mkexport.sh b/tools/mkexport.sh
index 9b76afbc6b..37a78394bd 100755
--- a/tools/mkexport.sh
+++ b/tools/mkexport.sh
@@ -202,6 +202,7 @@ if [ "X${USRONLY}" == "Xy" ]; then
 	echo "ARCHWARNINGS     = ${ARCHWARNINGS}" >>"${EXPORTDIR}/build/Make.defs"
 	echo "ARCHWARNINGSXX   = ${ARCHWARNINGSXX}" >>"${EXPORTDIR}/build/Make.defs"
 	echo "ARCHOPTIMIZATION = ${ARCHOPTIMIZATION}" >>"${EXPORTDIR}/build/Make.defs"
+	echo "WINTOOL          = ${WINTOOL}" >>"${EXPORTDIR}/build/Make.defs"
 	echo "CROSSDEV         = ${CROSSDEV}" >>"${EXPORTDIR}/build/Make.defs"
 	echo "CC               = ${CC}" >>"${EXPORTDIR}/build/Make.defs"
 	echo "CXX              = ${CXX}" >>"${EXPORTDIR}/build/Make.defs"