/// $CompilerFlags: -Iexecute("pg_config --includedir" "POSTGRESQL_INCLUDE_DIR")
/// $LinkerFlags: -Lexecute("pg_config --libdir" "POSTGRESQL_LIBRARY_DIR") -lpq
+/// $PackageInfo: require_system("centos") postgresql-devel
/// $PackageInfo: require_system("darwin") postgresql
/// $PackageInfo: require_system("ubuntu") libpq-dev