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subrepo: subdir: "lib/hackerlibultra" merged: "08e84e89" upstream: origin: "https://github.com/HackerN64/hackerlibultra" branch: "main" commit: "08e84e89" git-subrepo: version: "0.4.9" origin: "???" commit: "???"
17 lines
611 B
Makefile
17 lines
611 B
Makefile
# util.mk - Miscellaneous utility functions for use in Makefiles
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# Throws an error if the value of the variable named by $(1) is not in the list given by $(2)
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define validate-option
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# value must be part of the list
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ifeq ($$(filter $($(1)),$(2)),)
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$$(error Value of $(1) must be one of the following: $(2))
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endif
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# value must be a single word (no whitespace)
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ifneq ($$(words $($(1))),1)
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$$(error Value of $(1) must be one of the following: $(2))
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endif
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endef
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# Returns the path to the command $(1) if exists. Otherwise returns an empty string.
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find-command = $(shell which $(1) 2>/dev/null)
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