[MacPorts] #59404: boost fails to build on Mac OS X Lion

[MacPorts]

#59404: boost fails to build on Mac OS X Lion
-------------------------------+--------------------
 Reporter:  RobK88             |      Owner:  (none)
     Type:  defect             |     Status:  new
 Priority:  Normal             |  Milestone:
Component:  ports              |    Version:  2.6.1
 Keywords:  boost lion libc++  |       Port:  boost
-------------------------------+--------------------
 I am unable to build boost on my old Mac running Lion.  Macports is
 configured to use libc++.


 {{{
 --->  Computing dependencies for boost
 --->  Configuring boost
 --->  Building boost
 Error: Failed to build boost: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_boost/boost/main.log
 for details.
 Error: rev-upgrade failed: Error rebuilding boost
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 }}}

 I have also tried to upgrade boost using the following commands without
 success:

 sudo port clean boost
 sudo port upgrade boost configure.compiler=clang

 I finally ran the following upgrade command with the verbose option:
 sudo port -v upgrade boost configure.compiler=clang

 Attached please find the output of the command.
 I also have attached the main.log file.

 P.S.  As recommended, I have removed the default.compilers line from
 macports.conf for Macports 2.6.x

-- 
Ticket URL: <https://trac.macports.org/ticket/59404>
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