'''tcl::pkgconfig''', proposed by [TIP] [Tcl Improvement Proposal 59%|%59], a [Tcl commands%|%built-in] Tcl command, first appeared in Tcl version [Changes in Tcl/Tk 8.5%|%8.5]. ''There is no good reason ever to use tcl::pkgconfig for anything except building.'': - [Twylite], [http://code.activestate.com/lists/tcl-core/12345/%|%::tcl::pkgconfig error], [Tcl Core Team%|%TCT] mailing list, 2012-11-14 <> Tip | Command