[MacPorts] #54900: libgcc @7.2.0: fatal error: bits/regex_scanner.tcc: No such file or directory

[MacPorts]

#54900: libgcc @7.2.0: fatal error: bits/regex_scanner.tcc: No such file or
directory
---------------------------+------------------------
  Reporter:  cjones051073  |      Owner:
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.4.1
Resolution:                |   Keywords:  highsierra
      Port:  libgcc        |
---------------------------+------------------------
Description changed by mf2k:

Old description:

> Running newly release macOS 10.13. Xcode and CLI tools fully updated.
>
> building libgcc gives
>
> {{{
> :info:build                  from
> /opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_lang_gcc7/libgcc/work/gcc-7.2.0/libstdc++-v3/include/precompiled/stdc++.h:110:
> :info:build
> /opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_lang_gcc7/libgcc/work/build/x86_64
> -apple-darwin17/libstdc++-v3/include/bits/regex_scanner.h:272:10: fatal
> error: bits/regex_scanner.tcc: No such file or directory
> :info:build  #include <bits/regex_scanner.tcc>
> }}}
>
> Full log attached.
>
> Port has no maintainer, so not sure who to cc. Looks similar though to
>
> https://trac.macports.org/ticket/54829

New description:

 Running newly release macOS 10.13. Xcode and CLI tools fully updated.

 building libgcc gives

 {{{
 :info:build                  from
 /opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_lang_gcc7/libgcc/work/gcc-7.2.0/libstdc++-v3/include/precompiled/stdc++.h:110:
 :info:build
 /opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_lang_gcc7/libgcc/work/build/x86_64
 -apple-darwin17/libstdc++-v3/include/bits/regex_scanner.h:272:10: fatal
 error: bits/regex_scanner.tcc: No such file or directory
 :info:build  #include <bits/regex_scanner.tcc>
 }}}

 Full log attached.

 Port has no maintainer, so not sure who to cc. Looks similar though to
 ticket:54829

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Ticket URL: <https://trac.macports.org/ticket/54900#comment:8>
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