m4: Frozen state
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1 2.4 Command line options for frozen state
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11 GNU 'm4' comes with a feature of freezing internal state (⇒Frozen
files). This can be used to speed up 'm4' execution when reusing a
1 common initialization script.
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1 '-F FILE'
1 '--freeze-state=FILE'
1 Once execution is finished, write out the frozen state on the
1 specified FILE. It is conventional, but not required, for FILE to
1 end in '.m4f'.
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1 '-R FILE'
1 '--reload-state=FILE'
1 Before execution starts, recover the internal state from the
1 specified frozen FILE. The options '-D', '-U', and '-t' take
1 effect after state is reloaded, but before the input files are
1 read.
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