PKG_IREMAP ?= 1
ifneq ($(CONFIG_PKG_BUILD_USE_JOBSERVER),)
- MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) -j)
+ MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j))
else
MAKE_J:=-j$(CONFIG_PKG_BUILD_JOBS)
endif