# Write string to temporary file by chopping into pieces that
# fit the commandline
# parameters: filename, maxitems (for one write), string
# returns: filename
define var2file
$(strip $(1)
$(eval gb_var2file_helpervar := $$(shell printf "%s" "" > $(1) ))\
$(foreach item,$(3),$(eval gb_var2file_curblock += $(item)
    ifeq ($$(words $$(gb_var2file_curblock)),$(2)) 
        gb_var2file_helpervar := $$(shell printf "%s" "$$(gb_var2file_curblock)" >> $(1) )
        gb_var2file_curblock :=
    endif
    ))\
    $(eval gb_var2file_helpervar := $(shell echo " "$(gb_var2file_curblock) >> $(1) )
        gb_var2file_curblock :=
    ))
endef

define var2filecr
$(strip $(1)
$(foreach item,$(strip $(3)),$(eval gb_var2file_curblock += $(item)
    ifeq ($$(words $$(gb_var2file_curblock)),$(2)) 
        gb_var2file_helpervar :=$$(shell echo $$(gb_var2file_curblock) >> $(1) )
        gb_var2file_curblock :=
    endif
    )) \
	)
endef