<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div><blockquote type="cite" class=""><div class="">On Sep 4, 2020, at 05:51, Ryan Schmidt <<a href="mailto:ryandesign@macports.org" class="">ryandesign@macports.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="Singleton"><blockquote type="cite" style="font-family: Courier; font-size: 24px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">Warning: cltversion: For a possible fix, please see:<span class="Apple-converted-space"> </span><a href="https://trac.macports.org/wiki/ProblemHotlist#reinstall-clt" class="">https://trac.macports.org/wiki/ProblemHotlist#reinstall-clt</a><br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Courier; font-size: 24px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Courier; font-size: 24px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Follow the instructions at that URL.</span></div></div></blockquote><br class=""></div><div>Thank you. Graphviz built after updating the command line tools.</div><div><br class=""></div><div>I'm still not sure why this didn't work:</div><div><br class=""></div><div><div>MrMuscle:~ mnewman$ xcode-select --install</div><div>xcode-select: error: command line tools are already installed, use "Software Update" to install updates</div></div><br class=""><div class="">But, after doing that, Software Update didn't find any updates available. </div><div class=""><br class=""></div><div class="">My browser history shows that after graphviz failed to build I visited:</div><div class=""><br class=""></div><div class=""><div class="Singleton"><blockquote type="cite" class="" style="font-family: Courier;"><a href="https://trac.macports.org/wiki/ProblemHotlist#reinstall-clt" class="">https://trac.macports.org/wiki/ProblemHotlist#reinstall-clt</a></blockquote><br class=""></div></div><div class="Singleton">But my bash history doesn't go back far enough to show me what went wrong the first time I tried that.</div><div class="Singleton"><br class=""></div><div class="Singleton">Thanks again for your help. As you may have discovered, I need primary school level instructions.</div><div class="Singleton"><br class=""></div><div class="Singleton">Mike</div></body></html>