qt5-qtcreator-docs fails to build

[mouse07410 (Mouse)]

MacOS 10.13.6. Xcode-10.0 and 9.4.1. Current Macports 2.5.4. Fails to upgrade qt5-qtcreator-docs from 4.7.0 to 4.7.1:

$ sudo port upgrade qt5-qtcreator-docs
--->  Computing dependencies for qt5-qtcreator-docs
--->  Building qt5-qtcreator-docs
Error: Failed to build qt5-qtcreator-docs: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_qt5-qtcreator/qt5-qtcreator-docs/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
$

[mouse07410 (Mouse)]

Failed build log of qt5-qtcreator-docs 4.7.1

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

Somehow, your build is finding ​a partially started installation of Clang 7.0.
It is attempting to use /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_llvm-7.0/clang-7.0/work/llvm-7.0.0.src/tools/clang/lib/Lex/PPCaching.cp.
I cannot begin to imagine how this is possible.
I suggest running sudo port clean clang-7.0 and trying again.

Since the BuildBots have ​successfully built qt5-qtcreator-docs, I will close this ticket.
If cleaning clang-7.0 does not work, please feel free to reopen the ticket.

[mouse07410 (Mouse)]

Amazingly (because I don't understand it, and clang-7.0 seemed to have been installed fine), cleaning clang-7.0 and trying qt5-qtcreator-docs again succeeded.

So let's keep this ticket closed, at least for now. ;)

Thanks!