--- ghc.mk.orig 2018-09-16 20:53:54 UTC
+++ ghc.mk
@@ -96,6 +96,7 @@ endif
 # Catch make if it runs away into an infinite loop
 ifeq      "$(MAKE_RESTARTS)" ""
 else ifeq "$(MAKE_RESTARTS)" "1"
+else ifeq "$(MAKE_RESTARTS)" "2"
 else
 $(error Make has restarted itself $(MAKE_RESTARTS) times; is there a makefile bug? See http://ghc.haskell.org/trac/ghc/wiki/Building/Troubleshooting#Makehasrestarteditself3timesisthereamakefilebug for details)
 endif