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<p><font size="-1">This page will show which cmake versions install
with the different Ubuntu releases.</font></p>
<p><font size="-1">xenial 16.04 cmake 3.5.1</font></p>
<p><font size="-1">bionic 18.04 cmake 3.10.2</font></p>
<p><font size="-1">cosmic 18.10 cmake 3.12.1</font></p>
<p><font size="-1">disco 19.04 cmake 3.13.4</font></p>
<p><font size="-1">eoan 19.10 cmake 3.13.4</font></p>
<p><font size="-1">19.10 is a new release as of 10/20. And it is
common to use the LTS releases with the last one being 18.04,
cmake 3.10.2.</font></p>
<p><font size="-1">For around the last decade or so it has been bad
form to override the standard release packages, a rule I expect
is well known to those on the LTS releases. Of course those on
different OS's will have different standards but as with all
these software package dependencies there is likely some release
level that does not overly burden a primary number of users,
while still burdening the remainder, but where nevertheless a
reasonable line has to be drawn. <br>
</font></p>
<p><font size="-1">Drawing the line at everyone, which could well be
the case here, may be more than what is required.</font></p>
<p><font size="-1">Neil Nelson <br>
</font></p>
<div class="moz-cite-prefix"><font size="-1">On 10/29/19 11:09 AM,
Chris Bieneman via llvm-dev wrote:<br>
</font></div>
<blockquote type="cite"
cite="mid:4BD93BF4-BC62-419E-A134-922C157B1898@apple.com">
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<div class=""><font size="-1">...</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">TL;DR: We should move to CMake 3.15
(RFC incoming). We should make `all` really `all`. We should
strive to reduce complexity and remove options, specifically
options that aren't relevant to the monorepo. We should work
to standardize workflows. We need to keep thinking about how
to build runtime projects.</font></div>
<font size="-1">...</font>
<div class=""><font size="-1"><br class="">
</font></div>
<div class=""><font size="-1">We had a brief discussion around
raising the minimum required CMake version. The general
consensus was that since CMake provides binary packages for
most common OSs, and building CMake from source has lower
system requirements than LLVM and is very simple, nobody saw
any barrier to adopting new versions. Initially I suggested
moving to CMake 3.11 or 3.12, I believe it was James Knight
who said the actual cost of updating the bots is the hard part
in raising the version, so maybe we should just take the
newest. That reasoning made sense to everyone at the
roundtable and there were no objections at the roundtable to
moving to CMake 3.15. Look for an RFC from me shortly that
will propose that and lay out a timeline.</font></div>
<div class=""><font size="-1"><br class="">
</font></div>
<font size="-1">...</font></blockquote>
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