libpixman: libpng14.dylib, file was built for unsupported file format which is not the architecture being linked

[brian@…]

I'm upgrading ports (port upgrade --enforce-variants gtk2 +universal) and I get the following error when it attempts to build libpixman.

--->  Building libpixman
Error: Target org.macports.build returned: shell command failed (see log for details)
Log for libpixman is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_libpixman/libpixman/main.log
Error: Unable to upgrade port: 1

[brian@…]

Cc Me!

[ryandesign (Ryan Carsten Schmidt)]

Please remember to preview before submitting so you can ensure you got the WikiFormatting right, to fill in the Port field, and to Cc the maintainer of that port.

The log says:

:info:build ld: warning: in /opt/local/lib/libpng14.dylib, file was built for unsupported file format which is not the architecture being linked (i386)

This means your libpng is not installed universal; reinstall it universal.

sudo port -n upgrade --force libpng +universal

If you need further help, write to the macports-users mailing list; there is no bug here.