file function

makefile

$(file >build/version.txt,$(VERSION))

Explanation

GNU make can create or append files during parsing or expansion.

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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Same sheet · prioritizing Shell, call, eval, and generated rules

Capture shell command output at parse time.

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Invoke a user-defined macro like a function.

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Generate new rules dynamically.

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Read a variable without expanding it.

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Emit diagnostics or abort parsing.

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Print information during parsing.

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