libgcc @4.9.2: Bootstrap comparison failure!

[bri.cales@…]

Hello,

I am trying to update my macports by using the commands:

sudo port -v selfupdate
sudo port upgrade outdated

The self update works without errors but when I execute the second command I get this error:

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_gcc49/libgcc/main.log
Error: Problem while installing libgcc

Suggestions?

[larryv (Lawrence Velázquez)]

:debug:main Skipping completed org.macports.archivefetch (libgcc)
:debug:main Privilege de-escalation not attempted as not running as root.
:debug:main Skipping completed org.macports.fetch (libgcc)
:debug:main Privilege de-escalation not attempted as not running as root.
:debug:main Skipping completed org.macports.checksum (libgcc)
:debug:main Privilege de-escalation not attempted as not running as root.
:debug:main Skipping completed org.macports.extract (libgcc)
:debug:main Privilege de-escalation not attempted as not running as root.
:debug:main Skipping completed org.macports.patch (libgcc)
:debug:main Privilege de-escalation not attempted as not running as root.
:debug:main Skipping completed org.macports.configure (libgcc)
:debug:main Privilege de-escalation not attempted as not running as root.
:debug:build build phase started at Sun Feb 22 13:16:52 EST 2015

This is not a clean build. ​As per the Guide, please clean, try installing again, and attach the new main.log if it fails.

$ sudo port clean libgcc
$ sudo port upgrade outdated

[tedescn@…]

This work around worked for me, I'm currently updating ports post OSX El Capitan install and hit this same issue. Thanks.

[ryandesign (Ryan Carsten Schmidt)]

The log shows that libgcc from gcc49 failed to bootstrap:

:info:build make[3]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc49/libgcc/work/build'
:info:build Comparing stages 2 and 3
:info:build warning: gcc/cc1-checksum.o differs
:info:build warning: gcc/cc1obj-checksum.o differs
:info:build warning: gcc/cc1objplus-checksum.o differs
:info:build warning: gcc/cc1plus-checksum.o differs
:info:build Bootstrap comparison failure!
:info:build libiberty/lrealpath.o differs
:info:build libiberty/regex.o differs
:info:build make[2]: *** [compare] Error 1

libgcc has been updated to newer versions since then, and we have ​packages built for 10.6 and later, so I assume whatever problem existed when this ticket was filed is either resolved or is specific to your computer.