imagemagick installation error - architecture mismatch

I am trying to install ImageMagick via macports but am getting the following error msg:

Error: Cannot install imagemagick for the arch(s) 'x86_64' because
Error: its dependency bzip2 is only installed for the arch 'i386'
Error: and the configured universal_archs 'i386 ppc' are not sufficient.
Error: Unable to execute port: architecture 开发者_开发技巧mismatch
To report a bug, see <http://guide.macports.org/#project.tickets>

Any suggestion would be greatly appreciated :)

This looks like the same question that was asked on Superuser, "Mac ports installation of gcc46 failing due to architecture problems", and on Apple.Stackexchange, "Mac ports installation of gcc46 failing due to architecture problems".

Did you start building these MacPort binaries on MacOS 10.5, then upgrade to 10.6 -- or move to a new machine with 10.6 and copy the MacPorts files from the old machine -- and then build imagemagick under MacOS 10.6?

Does your configuration file /opt/local/etc/macports/macports.conf differ from macports.conf.default? That's a sign that the MacPorts environment was migrated from 10.5 instead of being created new on 10.6. There should be a line there, reading universal_archs ppc i386 ppc64 x86_64.

The official MacPorts migration instructions explain how to essentially update your environment for MacOS X 10.6 and do a complete rebuild. Their instructions:

• Reinstall Xcode and MacPorts
• Update macports.conf
• Save a list of installed ports
• Uninstall all ports
• Reinstall just those you still want

The blog post Universal Binaries in Macports gives slightly different instructions. Basically it comes down to:

• update the universal_archs line in macports.conf
• force a complete rebuild with $ sudo port upgrade --force installed -