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--></style></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal style='margin-left:.5in'>The error is basically:<o:p></o:p></p><div><div><p class=MsoNormal style='margin-left:.5in'>:info:build CMake Error: failed to create symbolic link '/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-12/clang-12/work/build/projects/compiler-rt/lib/builtins/outline_atomic_helpers.dir/outline_atomic_ldadd2_1.S': file already exists<o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#0070C0'>Understood, thanks!<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>Looks like this is caused by <a href="https://reviews.llvm.org/D93178">https://reviews.llvm.org/D93178</a>. It seems that when you build multiple arm64 slice (in this case, arm64 and arm64e), the LSE builtin will be generated twice. In the rare case that when two same `cmake -E create_symlink` running at the same time, you get that error. Before the change, it was compiling using clang so you don't get this weird race condition.<o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#0070C0'>The problem is – even when I am forcing Macports to <u>not</u> build “fat” binaries (aka, limit the build to x86_64 only), I’m still getting an error.<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>You can probably workaround by manually set `DARWIN_osx_BUILTIN_ARCHS` to remove `arm64e` since you don't really need that. <o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#0070C0'>Please see above. I don’t think it helped – at least when I’m building via Macports (where what I’m doing should be the same or equivalent to what you’re suggesting). :-(<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:.5in'>At the meantime, can you file a bug report to <a href="http://bugs.llvm.org">bugs.llvm.org</a>?<o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#0070C0'>I was told this reporting mechanism is going away…?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#0070C0'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#0070C0'>But sure, if you think it makes sense, I’ll file a report there.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#0070C0'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#0070C0'>Thanks!<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='margin-left:.5in'>On Jul 16, 2021, at 12:24 PM, Blumenthal, Uri - 0553 - MITLL via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<o:p></o:p></p></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:12.0pt'>It seems there’s a problem with parallel builds, but I don’t really know the cause of the problem. You can see the screen log and the complete build log here:<span class=apple-converted-space> </span><a href="https://trac.macports.org/ticket/63026#comment:5"><span style='color:#0563C1'>https://trac.macports.org/ticket/63026#comment:5</span></a></span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:12.0pt'> </span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:12.0pt'>iMac Pro (Intel Core i9, 10 cores), MacOS Big Sur 11.4, Xcode-12.5.1, clang-12.0.1.</span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:12.0pt'> </span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:12.0pt'>It would be great if this problem is resolved.</span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:12.0pt'> </span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:12.0pt'>Thanks!</span><o:p></o:p></p></div><div><div><div><p class=MsoNormal style='margin-left:.5in'>--<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Andale Mono"'>Regards,</span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Andale Mono"'>Uri Blumenthal Voice: (781) 981-1638 </span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Andale Mono"'>Secure Resilient Systems and Technologies Cell: (339) 223-5363</span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Andale Mono"'>MIT Lincoln Laboratory <span class=apple-converted-space> </span></span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Andale Mono"'>244 Wood Street, Lexington, MA 02420-9108 </span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Andale Mono"'> </span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Andale Mono"'>Web: <a href="https://www.ll.mit.edu/biographies/uri-blumenthal" title="https://www.ll.mit.edu/biographies/uri-blumenthal"><span style='color:#713C56'>https://www.ll.mit.edu/biographies/uri-blumenthal</span></a></span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;font-family:"Andale Mono"'>Root CA: <a href="https://www.ll.mit.edu/llrca2.pem" title="https://www.ll.mit.edu/llrca2.pem"><span style='color:#713C56'>https://www.ll.mit.edu/llrca2.pem</span></a></span><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><i>There are two ways to design a system. One is to make is so simple there are obviously no deficiencies.</i><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><i>The other is to make it so complex there are no obvious deficiencies.</i><o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><i> - C. A. R. Hoare</i><o:p></o:p></p></div></div></div><div><p class=MsoNormal style='margin-left:.5in'> <o:p></o:p></p></div><p class=MsoNormal style='margin-left:.5in'><span style='font-size:9.0pt;font-family:Helvetica'>_______________________________________________<br>LLVM Developers mailing list<br></span><a href="mailto:llvm-dev@lists.llvm.org"><span style='font-size:9.0pt;font-family:Helvetica;color:#0563C1'>llvm-dev@lists.llvm.org</span></a><span style='font-size:9.0pt;font-family:Helvetica'><br></span><a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev"><span style='font-size:9.0pt;font-family:Helvetica;color:#0563C1'>https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev</span></a><o:p></o:p></p></div></blockquote></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div></div></body></html>