Don't quote

sysimage.mk

@@ -82,7 +82,7 @@ $$(build_private_libdir)/sys$1-o.a $$(build_private_libdir)/sys$1-bc.a : $$(buil
 		 JULIA_PROJECT= \
 		 JULIA_DEPOT_PATH=':' \
 		 JULIA_NUM_THREADS=1 \
-			$$(call spawn, $3) $2 -C "$$(JULIA_CPU_TARGET)" "$$(HEAPLIM)" --output-$$* $$(call cygpath_w,$$@).tmp $$(JULIA_SYSIMG_BUILD_FLAGS) \
+			$$(call spawn, $3) $2 -C "$$(JULIA_CPU_TARGET)" $$(HEAPLIM) --output-$$* $$(call cygpath_w,$$@).tmp $$(JULIA_SYSIMG_BUILD_FLAGS) \
 			--startup-file=no --warn-overwrite=yes --sysimage $$(call cygpath_w,$$<) $$(call cygpath_w,$$(JULIAHOME)/contrib/generate_precompile.jl) $(JULIA_PRECOMPILE); then \
 		echo '*** This error is usually fixed by running `make clean`. If the error persists$$(COMMA) try `make cleanall`. ***'; \
 		false; \