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build_macros: add create sequence helper function 

Add `CREATE_SEQ` function to generate sequence of numbers starting from
1 to allow easy comparison of a user defined macro with non-zero
positive numbers.

Change-Id: Ibcb336a223d958154b1007d08c428fbaf1e48664
Signed-off-by: Vijayenthiran Subramaniam <vijayenthiran.subramaniam@arm.com>
This commit is contained in:
Vijayenthiran Subramaniam 2020-02-08 21:27:30 +05:30 committed by Manish Pandey
parent 8a10c6c274
commit 8c7b944adb
1 changed files with 11 additions and 0 deletions
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11
make_helpers/build_macros.mk
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@ -67,6 +67,17 @@ $(foreach d,$(0-9),$(eval __numeric := $(subst $(d),,$(__numeric))))
$(if $(__numeric),$(error $(1) must be numeric))
endef
# CREATE_SEQ is a recursive function to create sequence of numbers from 1 to
# $(2) and assign the sequence to $(1)
define CREATE_SEQ
$(if $(word $(2), $($(1))),\
$(eval $(1) += $(words $($(1))))\
$(eval $(1) := $(filter-out 0,$($(1)))),\
$(eval $(1) += $(words $($(1))))\
$(call CREATE_SEQ,$(1),$(2))\
)
endef
# IMG_LINKERFILE defines the linker script corresponding to a BL stage
# $(1) = BL stage (2, 30, 31, 32, 33)
define IMG_LINKERFILE