<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 1 Oct 2018, at 14:25, Craig Scott <<a href="mailto:craig.scott@crascit.com" class="">craig.scott@crascit.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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="">You need to set CMAKE_OSX_DEPLOYMENT_TARGET as a<span class="Apple-converted-space"> </span></span><b style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: 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="">cache</b><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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=""><span class="Apple-converted-space"> </span>variable before calling the project() command. If you set it as a normal (i.e. non-cache) variable, the compiler detection logic triggered by the project() call creates a cache variable if one doesn't exist, which would discard the non-cache variable. It's a bit unfortunate, but that's what happens when you set a cache variable for the first time. The relevant code related to your observations is in Modules/Platform/Darwin-Initialize.cmake.</span></div></blockquote></div><br class=""><div class="">Thanks, that was indeed the solution.</div><div class=""><br class=""></div><div class="">I’d suggest the docs page for CMAKE_OSX_DEPLOYMENT_TARGET could use some wording to point this out, but I don’t know who . how a docs change gets done.</div><div class=""><br class=""></div><div class="">James</div></body></html>