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Thomas Miedema authored
Summary: Given: a Makefile with a non-PHONY target called `target` If: after running `make target`, a file exists with the same name as `target` (it was either already there, or it was created by running `make target`) And: `target` has no dependencies, such as `clean`, that modify or delete that file Then: subsequent invocations of `make target` will not have any effect. Solution: make `target` PHONY. BAD: ``` foo: ... ./foo ``` BETTER: ``` foo: ... ./foo .PHONY: foo ``` Reviewers: austin Reviewed By: austin Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D670
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