Rebuild target when any listed prerequisite changes.
Section: Targets, prerequisites, and recipes
Rule with multiple prerequisites
makefile
makefile
bundle.js: app.js ui.js api.js
cat $^ > $@Explanation
`$^` expands to all prerequisites and `$@` to the target name within the recipe.
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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing Targets, prerequisites, and recipes
Multiple targets one recipe
Attach the same recipe to multiple targets.
Order-only prerequisite
Require creation order without forcing rebuilds when the prerequisite timestamp changes.