<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On 9 November 2016 at 05:51, <span dir="ltr"><<a href="mailto:jackie.huang@windriver.com" target="_blank">jackie.huang@windriver.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div id="gmail-:351" class="gmail-a3s gmail-aXjCH gmail-m15847a7f3f90656b">-PERLVERSION := "${@get_perl_version(d)}"<br>
+PERLVERSION = "${@get_perl_version(d)}"<br></div></blockquote></div><br>This uses := as the get_perl_version is a non-trivial amount of python which doesn't need to be re-evaluated all the time. Have you looked at how bad the performance hit is, and whether there is an alternative?</div><div class="gmail_extra"><br></div><div class="gmail_extra">Ross</div></div>