[MacPorts] #51323: libgcc update @5.3.0_0 to @6.1.0_0 Building error when using port selfupdate outdated

[MacPorts]

#51323: libgcc update @5.3.0_0 to @6.1.0_0 Building error when using port
selfupdate outdated
------------------------+--------------------------------
 Reporter:  ncerpagi@…  |      Owner:  macports-tickets@…
     Type:  update      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.4
 Keywords:  libgcc      |       Port:
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 I am trying to upgrade the ports outdated in my MacOS 10.10.5 (Xcode 7.2)
 and it fails in updating libgcc. Here is the error message and the
 main.log is in attachement.


 {{{
 --->  Computing dependencies for libgcc
 --->  Fetching archive for libgcc
 --->  Attempting to fetch libgcc-6.1.0_0.darwin_14.x86_64.tbz2 from
 https://packages.macports.org/libgcc
 --->  Attempting to fetch libgcc-6.1.0_0.darwin_14.x86_64.tbz2 from
 http://sea.us.packages.macports.org/macports/packages/libgcc
 --->  Attempting to fetch libgcc-6.1.0_0.darwin_14.x86_64.tbz2 from
 http://mse.uk.packages.macports.org/sites/packages.macports.org/libgcc
 --->  Fetching distfiles for libgcc
 --->  Attempting to fetch gcc-6.1.0.tar.bz2 from
 https://distfiles.macports.org/gcc6
 --->  Verifying checksums for libgcc
 --->  Extracting libgcc
 --->  Configuring libgcc
 --->  Building libgcc
 Error: org.macports.build for port libgcc returned: command execution
 failed
 Please see the log file for port libgcc for details:
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc6/libgcc/main.log
 Error: Unable to upgrade port: 1
 }}}

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Ticket URL: <https://trac.macports.org/ticket/51323>
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