[MacPorts] #70733: gdb upgrade fails to build after selfupdate

[MacPorts]

#70733: gdb upgrade fails to build after selfupdate
------------------------------+--------------------
  Reporter:  TheLastLovemark  |      Owner:  (none)
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.10.1
Resolution:                   |   Keywords:
      Port:  gdb              |
------------------------------+--------------------

Comment (by jmroot):

 {{{
 :info:build fatal error: error in backend: Cannot select: intrinsic
 %llvm.x86.sha1rnds4
 :info:build yes
 :info:build checking for library containing setsockopt... clang: error:
 clang frontend command failed with exit code 70 (use -v to see invocation)
 :info:build Apple LLVM version 10.0.0 (clang-1000.10.44.4)
 :info:build Target: x86_64-apple-darwin17.7.0
 :info:build Thread model: posix
 :info:build InstalledDir: /Library/Developer/CommandLineTools/usr/bin
 :info:build clang: note: diagnostic msg: PLEASE submit a bug report to
 http://developer.apple.com/bugreporter/ and include the crash backtrace,
 preprocessed source, and associated run script.
 }}}
 {{{
 :info:build clang: note: diagnostic msg:
 :info:build ********************
 :info:build PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
 :info:build Preprocessed source(s) and associated run script(s) are
 located at:
 :info:build clang: note: diagnostic msg:
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gdb/gdb/work/.tmp/sha1-e6dd9c.c
 :info:build clang: note: diagnostic msg:
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gdb/gdb/work/.tmp/sha1-e6dd9c.sh
 :info:build clang: note: diagnostic msg: Crash backtrace is located in
 :info:build clang: note: diagnostic msg:
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_gdb/gdb/work/.home/Library/Logs/DiagnosticReports/clang_
 <YYYY-MM-DD-HHMMSS>_<hostname>.crash
 :info:build clang: note: diagnostic msg: (choose the .crash file that
 corresponds to your crash)
 :info:build clang: note: diagnostic msg:
 :info:build ********************
 }}}
 Xcode 9.4.1 installs clang-902.0.39.2 and Xcode 10.0 has
 clang-1000.11.45.2. You seem to have something in between with
 clang-1000.10.44.4, despite the detected versions being `Xcode 10.1, CLT
 10.1.0.0.1.1539992718` as per the log.

-- 
Ticket URL: <https://trac.macports.org/ticket/70733#comment:1>
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