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-rw-r--r--Makefile.inc1
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile.inc b/Makefile.inc
index 96121d4019..7258043ff1 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -141,6 +141,7 @@ $(foreach supported_arch,$(ARCH_SUPPORTED), \
# toupper: returns the value in all uppercase
# ws_to_under: returns the value with any whitespace changed to underscores
_toint=$(shell printf "%d" $1)
+_tohex=$(shell printf 0x"%x" $1)
_int-add2=$(shell expr $(call _toint,$1) + $(call _toint,$2))
int-add=$(if $(filter 1,$(words $1)),$(strip $1),$(call int-add,$(call _int-add2,$(word 1,$1),$(word 2,$1)) $(wordlist 3,$(words $1),$1)))
int-subtract=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) - $(call _toint,$(word 2,$1))))