Thanks so much for all of the help. It not only fixed my problem but
lets me understand what I did wrong and how to develop gmake.
For reference, here is what I came up with to make targets based on
either wildcard search of target names or a findstring of the target
values. Others might find this useful.
Scott
On 10/20/16 3:39 PM, Philip Guenther wrote:
On Thu, Oct 20, 2016 at 2:22 PM, Scott Kruger <kru...@txcorp.com> wrote:
I am trying to construct a simple list of variables
whose values match certain patterns. It seems
straightforward, but I can't get the righ t
The makefile is:
----------
RUNTESTS=runex1 runex2 runex3
RUNTESTS_ARGS=$(foreach runtest, $(RUNTESTS), $(runtest)_ARGS)
ifdef argsearch
FOO:=$(foreach rarg, $(RUNTESTS_ARGS), $(if $(findstring
$(argsearch),$(eval $(value rarg))), $(rarg)))
You use := here so this will be evaluated *IMMEDIATELY*, before the
rest of the Makefile is parsed and therefore before the runex*_ARGS
variables are set. Either put those assignments before this
assignment, or use '=' instead of ':='.
Next, you don't want $(eval). That's for creating rules or doing
assignments while in the middle of an expansion. You don't need that,
you just need to get the value of the variable whose name is $(rarg).
You just need two levels of $(), though using $(value $(rarg)) is
probably best.
So:
FOO=$(foreach rarg,$(RUNTESTS_ARGS),$(if $(findstring
$(argsearch),$(value $(rarg))),$(rarg)))
With that:
$ gmake argsearch=foo
runex1_ARGS runex2_ARGS
$
Philip Guenther
###
## Simple file for selecting targets by wildcard search on either
## the target names or by the values of the targets
## make => runex1 runex2 runex3
## make search='%2' => runex2
## Note that search uses a glob like filtering with % as wildcard
## make argsearch='foo' => runex1 runex3
## Note that search uses no wildcard but is a simple findstring
#
RUNTESTS=runex1 runex2 runex3
runex1="foo"
runex2="bar"
runex3="foo bar"
ifdef search
NEW_RUNTESTS = $(filter $(search),$(RUNTESTS))
ACTUAL_RUN=$(NEW_RUNTESTS)
else
ifdef argsearch
NEW_RUNTESTS=$(foreach rarg, $(RUNTESTS), $(if $(findstring
$(argsearch),$(value $(rarg))), $(rarg)))
ACTUAL_RUN=$(NEW_RUNTESTS)
else
ACTUAL_RUN=$(RUNTESTS)
endif
endif
all:
-@echo ">"$(ACTUAL_RUN)
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