[Microsoft.Build.Utilities] Fixes tests resources build

diff --git a/mcs/class/Microsoft.Build.Utilities/Makefile b/mcs/class/Microsoft.Build.Utilities/Makefile
index b854d2bc853f73f702b2b428ae7fae7e3b164c9f..10ef6780d4af6caf04ee40b279df2c40a3915ad6 100644 (file)
--- a/mcs/class/Microsoft.Build.Utilities/Makefile
+++ b/mcs/class/Microsoft.Build.Utilities/Makefile
@@ -23,6 +23,8 @@ EXTRA_DISTFILES = $(TEST_RESX_RESOURCES:.resources=.resx)
 
 CLEAN_FILES += $(TEST_RESX_RESOURCES)
 
+.NOTPARALLEL: $(TEST_RESX_RESOURCES)
+
 $(TEST_RESX_RESOURCES): %.resources: %.resx
        $(RESGEN) $< || cp $@.prebuilt $@