Bug 389401 - Build horked using VC71 and make -jN, r=cls

config/rules.mk

@@ -2132,6 +2132,14 @@ endif
 # Special gmake rules.
 ################################################################################
 
+
+#
+# Disallow parallel builds with MSVC < 8
+#
+ifneq (,$(filter 1200 1300 1310,$(_MSC_VER)))
+.NOTPARALLEL:
+endif
+
 #
 # Re-define the list of default suffixes, so gmake won't have to churn through
 # hundreds of built-in suffix rules for stuff we don't need.