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 _______________________________________________ Help-make mailing list Help-make@gnu.org https://lists.gnu.org/mailman/listinfo/help-make
