I have filed bug in upstream (#43363).
Here are details: https://savannah.gnu.org/bugs/?43363
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SY,
Konstantin Demin
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I had discovered two moments which determine such behavior:
1) appending to variable in "$(eval ...)" takes only first value in chain.
I.e.:
LDFLAGS defined in global context as "LDFLAGS += 1"
and in target "A" as "LDFLAGS += 2",
then actual value for "A" and all it's prerequisites
Furthermore, here's detailed test.
Append target variable and global variable to "test.1" and name it "test.5":
{ http://pastebin.com/5hv5jzFq }
--- [ test.5 ] ---
a: LDFLAGS += -lm
LDFLAGS += -lbz2
--- [ test.5 ] ---
--- [ test.5 output ] ---
> d: LDFLAGS = -lbz2 -lm
> d:
> b: LDFLAGS = -lbz2 -l
Source: make-dfsg
Version: 4.0-8
Severity: wishlist
I'm trying to implement prerequisite feedback via environment backpropagation.
Here's "test.1":
{ http://pastebin.com/ZiEJpEhr }
--- [ test.1 ] ---
T=a b c d e
.PHONY: $(T)
$(T):
$(if $($(@)_BRINGBACK),$(eval $($(@)_BRINGBACK)))
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