<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="">Hi,<div class=""><br class=""></div><div class="">Apple has been depreciating shipping the SDK under /usr/include for some time now, and come Xcode11/macOS10.15 they are gone (with Xcode10 they where gone by default but you could add them back).</div><div class=""><br class=""></div><div class="">You need to specify the SDK root you need to use. See</div><div class=""><br class=""></div><div class=""><a href="https://www.mail-archive.com/macports-dev@lists.macports.org/msg06711.html" class="">https://www.mail-archive.com/macports-dev@lists.macports.org/msg06711.html</a></div><div class=""><br class=""></div><div class="">for a previous discussion.</div><div class=""><br class=""></div><div class="">Chris</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 10 Oct 2019, at 11:20 pm, David Nicholls <<a href="mailto:david.nicholls@anu.edu.au" class="">david.nicholls@anu.edu.au</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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Something Apple did in either the latest update to Mojave or the latest Xcode breaks gfortran's (8.3.0) ability to find the system library. I updated to the latest macports recently, too. gfortran 8.3.0 that compiled code easily under previous versions of
Mojave/Xcode/macports now throws an error:
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M5118 error on build:</div>
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ld: library not found for -lSystem</div>
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collect2: error: ld returned 1 exit status</div>
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make[1]: *** [../lab/map51] Error 1</div>
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make: *** [build] Error 2 with gfortran 8.3.0</div>
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<div class="">Does anyone know anything about this?<br class="">
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<div class="">DN</div>
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David C Nicholls,<br class="">
Research School of Astronomy & Astrophysics<br class="">
Australian National University<br class="">
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