<div dir="ltr">lld does not support Mac system really, on a Mac you're using the Apple Linker ld64.<div><br></div><div>In general though with 8 GB you likely want to limit your build to 4 threads (ninja -j 4) anyway.</div><div><br></div><div>-- </div><div>Mehdi</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Aug 8, 2020 at 4:35 PM Dmitry Mikushin via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hm, I think this should already be lld, as long as this is on Mac with a "stock" clang toolchain.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">вс, 9 авг. 2020 г. в 01:02, Min-Yih Hsu <<a href="mailto:minyihh@uci.edu" target="_blank">minyihh@uci.edu</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div><br><div><br><blockquote type="cite"><div>On Aug 8, 2020, at 3:32 PM, Dmitry Mikushin via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>> wrote:</div><br><div><div dir="ltr">Cool, thanks! <br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">вс, 9 авг. 2020 г. в 00:27, Petr Hosek <<a href="mailto:phosek@chromium.org" target="_blank">phosek@chromium.org</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">You can set the LLVM_PARALLEL_LINK_JOBS CMake variable to restrict the number of link jobs.</div></div></blockquote></div></div></blockquote><div>IMO, a more thorough solution would be switching to LLD (the gold linker might work few years ago, but now even gold will take me nearly 16GB of RAM), usually LLD won’t take you more than 4GB</div><div><br></div>-Min<br><blockquote type="cite"><div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr"><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Aug 8, 2020 at 3:00 PM Neil Nelson via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
<div><p><font size="-1"><a href="https://ninja-build.org/manual.html" target="_blank">https://ninja-build.org/manual.html</a></font></p>
<blockquote><p><font size="-1"><code>ninja -h</code> prints
help output. Many of Ninja’s flags intentionally
match those of Make; e.g <code>ninja -C build
-j 20</code> changes into the
<code>build</code> directory and runs 20 build
commands in parallel.</font></p>
</blockquote><p><font size="-1">Neil Nelson<br>
</font></p>
<div><font size="-1">On 8/8/20 3:41 PM,
David Blaikie via llvm-dev wrote:</font><br>
</div>
<blockquote type="cite">
<pre>On Sat, Aug 8, 2020 at 2:22 PM Dmitry Mikushin via llvm-dev
<a href="mailto:llvm-dev@lists.llvm.org" target="_blank"><llvm-dev@lists.llvm.org></a> wrote:
</pre>
<blockquote type="cite">
<pre>Ninja is really good, indeed. The only problem I've seen is that LLVM linking step (made massively parallel by Ninja) renders the 8GB RAM system unresponsive due to excessive swapping.
</pre>
</blockquote>
<pre>FWIW, there is a way to limit the number of parallel link jobs in
particular (so compile jobs can still have more parallelism). I don't
recall exactly what it is - I guess some CMake variable.
</pre>
<blockquote type="cite">
<pre>You can reconfigure CMake to use Ninja in an existing build folder, but it will not use the binaries previously built with another tool. Moreover, generated files may clash in an incompatible way, so it's rather better to cleanup the old build.
Kind regards,
- Dmitry.
сб, 8 авг. 2020 г. в 23:12, Paul C. Anagnostopoulos via llvm-dev <a href="mailto:llvm-dev@lists.llvm.org" target="_blank"><llvm-dev@lists.llvm.org></a>:
</pre>
<blockquote type="cite">
<pre>I built my first submission with Visual Studio, but everything I read and watch suggests Ninja, about which I know nothing. Is it okay if I rerun CMake with -G "Ninja" in the same build directory, then just run ninja?
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