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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - use of clock_gettime() blocks build of xray on macOS 10.11 and less"
href="https://bugs.llvm.org/show_bug.cgi?id=38959">38959</a>
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<th>Summary</th>
<td>use of clock_gettime() blocks build of xray on macOS 10.11 and less
</td>
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<th>Product</th>
<td>XRay
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
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<th>OS</th>
<td>MacOS X
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Runtime
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<th>Assignee</th>
<td>dberris@google.com
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<th>Reporter</th>
<td>ken.cunningham.webuse@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>clock_gettime() was added in macOS 10.12.
<<a href="https://stackoverflow.com/questions/5167269/clock-gettime-alternative-in-mac-os-x">https://stackoverflow.com/questions/5167269/clock-gettime-alternative-in-mac-os-x</a>>
clock_gettime() is used in several instances in the xray runtime library, and
CLOCK_REALTIME is used but undefined on 10.11 and earlier, and so the build
fails on systems without this function and definition.
A possible replacement function is used in MacPorts for a similar failure in
other software:
<<a href="https://github.com/macports/macports-ports/blob/master/graphics/cogl/files/patch-clock_gettime.diff">https://github.com/macports/macports-ports/blob/master/graphics/cogl/files/patch-clock_gettime.diff</a>>
Another clock_gettime() replacement function with an MIT license is noted here
<<a href="https://gist.github.com/alfwatt/3588c5aa1f7a1ef7a3bb">https://gist.github.com/alfwatt/3588c5aa1f7a1ef7a3bb</a>></pre>
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