--- common.mk.orig 2016-04-17 21:57:25.000000000 -0700 +++ common.mk 2016-09-07 11:20:44.000000000 -0700 @@ -140,7 +140,7 @@ EXTMK_ARGS = $(SCRIPT_ARGS) --extensi --make-flags="V=$(V) MINIRUBY='$(MINIRUBY)'" \ --gnumake=$(gnumake) --extflags="$(EXTLDFLAGS)" \ -- -INSTRUBY = $(SUDO) $(RUNRUBY) -r./$(arch)-fake $(srcdir)/tool/rbinstall.rb +INSTRUBY = $(SUDO) SDKROOT=/ $(RUNRUBY) -r./$(arch)-fake $(srcdir)/tool/rbinstall.rb INSTRUBY_ARGS = $(SCRIPT_ARGS) \ --data-mode=$(INSTALL_DATA_MODE) \ --prog-mode=$(INSTALL_PROG_MODE) \