diff -ur icu.org/source/data/Makefile.in icu/source/data/Makefile.in
--- icu.org/source/data/Makefile.in	2018-06-21 11:39:15.000000000 +0200
+++ icu/source/data/Makefile.in	2018-07-16 13:18:26.928109541 +0200
@@ -367,6 +367,7 @@
 ifeq ($(PKGDATA_MODE),dll)
 SO_VERSION_DATA = $(OUTTMPDIR)/icudata.res
 $(SO_VERSION_DATA) : $(MISCSRCDIR)/icudata.rc | build-dir
+	mkdir -p $(OUTTMPDIR)
 ifeq ($(MSYS_RC_MODE),1)
 	rc.exe -i$(srcdir)/../common -i$(top_builddir)/common -fo$@ $(CPPFLAGS) $<
 else