how to set searhpath without project? swift build error: unable find 'mysqlclient'.

[Moxacist]

ld: warning: Could not find auto-linked library 'mysqlclient'
Undefined symbols for architecture x86_64:
"_mysql_affected_rows", referenced from:
_$s12PerfectMySQL0bC0C18numberAffectedRowss5Int64VyF in MySQL.swift.o
"_mysql_close", referenced from:
_$s12PerfectMySQL0bC0Cfd in MySQL.swift.o
"_mysql_commit", referenced from:
_$s12PerfectMySQL0bC0C6commitSbyF in MySQL.swift.o
"_mysql_data_seek", referenced from:
_$s12PerfectMySQL0bC0C7ResultsC8dataSeekyySuF in MySQL.swift.o