1if {![package vsatisfies [package provide Tcl] 8]} {return} 2package ifneeded log 1.4 [list source [file join $dir log.tcl]] 3 4if {![package vsatisfies [package provide Tcl] 8.2]} {return} 5package ifneeded logger 0.9.4 [list source [file join $dir logger.tcl]] 6package ifneeded logger::appender 1.3 [list source [file join $dir loggerAppender.tcl]] 7 8if {![package vsatisfies [package provide Tcl] 8.4]} {return} 9package ifneeded logger::utils 1.3.1 [list source [file join $dir loggerUtils.tcl]] 10