The extra stuff doesn't seem to be needed, so lets just get rid of it.
endif
HOSTMAKE :=$(shell $(CONFIG_SHELL) -c "which $(HOSTMAKE)" || type -p $(HOSTMAKE) || echo make)
-# honor silent mode
-ifeq (s,$(findstring s,$(MAKEFLAGS)))
-MAKESILENT:=-s
-endif
-
-MAKE1:=$(HOSTMAKE) MAKE='$(firstword $(HOSTMAKE)) -j1 $(MAKESILENT)'
-MAKE:=$(HOSTMAKE) MAKE='$(firstword $(HOSTMAKE)) -j$(BR2_JLEVEL) $(MAKESILENT)'
+MAKE1:=$(HOSTMAKE) -j1
+MAKE:=$(HOSTMAKE) -j$(BR2_JLEVEL)
ifeq ($(BR2_OPTIMIZE_0),y)
TARGET_OPTIMIZATION=-O0