feat(cmake): add ixm_fallback function
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This brings a new function, `ixm_fallback`, which replaces an internal command `🈯::ixm::default`, and is now available for consumers. This command is used to assign values to variables that have not yet been defined. This is most useful when `cmake_parse_arguments` has been called and an optional value was not passed in to the user. Behavior regarding it's interaction with CMP0174 has been documented as well. Signed-off-by: Izzy Muerte <[email protected]>
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This brings a new function,
ixm_fallback, which replaces an internal command🈯::ixm::default, and is now available for consumers. This command is used to assign values to variables that have not yet been defined. This is most useful whencmake_parse_argumentshas been called and an optional value was not passed in to the user.Behavior regarding it's interaction with CMP0174 has been documented as well.