makefile

SKILL.md

| Rules, prerequisites, targets | syntax.md | | Variable types and assignment | variables.md | | Built-in functions | functions.md | | Special and phony targets | targets.md | | Recipe execution, parallel | recipes.md | | Implicit and pattern rules | implicit.md | | Common practical patterns | patterns.md |

| := | Simple | Once, at definition | | ?= | Conditional | If not already set | | = | Recursive | Each use (late binding) | | += | Append | Adds to existing value |

| $@ | Target | | $< | First prerequisite | | $^ | All prerequisites (unique) | | $? | Prerequisites newer than target | | $ | Stem in pattern rules |

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