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Use make functions to convert a text to lower case

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We cannot cache the result of ($shell ...) and we have to run these on
every build even if we don't have to re-read the makefiles. Replace it
with make functions $(substr $(substr ... )).

Bug: 38399657
Test: `make` pass, flash images from $OUT and boot device with chain partitions
Merged-In: I6d4ff8e487931ba25008a2a881401a8951d4049e
Change-Id: I6d4ff8e487931ba25008a2a881401a8951d4049e
(cherry picked from commit e615afd6d0)
This commit is contained in:
Bowgo Tsai 2017-06-20 17:38:21 +08:00
parent f636a80888
commit fbcd0412c7
1 changed files with 7 additions and 1 deletions
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8
core/Makefile
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@ -1840,6 +1840,12 @@ endif
endif
# Convert to lower case without requiring a shell, which isn't cacheable.
to-lower = $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,\
$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,\
$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,\
$(subst X,x,$(subst Y,y,$(subst Z,z,$1))))))))))))))))))))))))))
# -----------------------------------------------------------------
# vbmeta image
ifeq ($(BOARD_AVB_ENABLE),true)
@ -1867,7 +1873,7 @@ VENDOR_FOOTER_ARGS := BOARD_AVB_VENDOR_ADD_HASHTREE_FOOTER_ARGS
# $(1): the partition to enable AVB chain, e.g., BOOT or SYSTEM.
define check-and-set-avb-chain-args
$(eval PART := $(1))
$(eval part=$(shell echo $(PART) | tr A-Z a-z))
$(eval part=$(call to-lower,$(PART)))
$(eval _key_path := BOARD_AVB_$(PART)_KEY_PATH)
$(eval _signing_algorithm := BOARD_AVB_$(PART)_ALGORITHM)