BLD:W0090
Unknown function name %s
The indicated symbolic function call uses an unknown function name. This will cause the function call, and possibly the installation, to fail.
Symbolic function calls have the format <$name(parameters...)>. This diagnostic is issued when name is not one of the predefined function names.
Solution
Make sure that you use the correct syntax and names for symbolic function calls. Alternatively, if you did not intend to perform a function call, then review the expression of which $name is a part and replace the ostensible function call syntax by something else.