Daniel Pfeiffer > makepp > Mpp::BuildCheck::ignore_action

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NAME ^

ignore_action -- A build check method that ignores changes in the command.

USAGE ^

   build_check ignore_action

DESCRIPTION ^

The ignore_action method is exactly like the exact_match method except that it will not cause a rebuild if the command string changes. This method is intended to be used (along with the variable $(changed_inputs)) for commands that update an output file rather than remake it from scratch. For example,

   libxyz.a : *.o : build_check ignore_action
         ar ru $(output) $(changed_inputs)

is one way that you can update an archive. (There are a number of reasons why updating an archive can lead to incorrect builds, however. See the makepp cookbook for details.)

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