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When trying to install gcc46 on OS X 10.6.4 using port (MacPorts 1.9.1) i get the following errors:

artemis:foo$ sudo port install gcc46
Error: Cannot install gcc46 for the arch(s) 'x86_64' because
Error: its dependency gmp is only installed for the arch 'i386'
Error: and the configured universal_archs 'ppc i386' are not sufficient.
Error: Unable to execute port: architecture mismatch

Any suggestions on how to resolve this or alternatively how to install gcc46 for i386?

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Which version of OSX are you on? If OSX 10.6 how did you upgrade macports? – Mark Aug 17 '10 at 10:39
@Mark: 10.6.4 and i did nothing fancy - just a regular port selfupdate and port upgrade outdated. – gfr Aug 17 '10 at 21:34
Did you install macports under OSX < 10.6 and then upgrade the OS or a clean install of macports after installing 10.6 – Mark Aug 18 '10 at 11:53
@Mark: I started out with 10.6 on that machine. Reasked btw on the Apple Beta. – gfr Aug 18 '10 at 23:43
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I highly doubt you started clean on 10.6 as the default universal_archs would be "x86_64 i386" in that case. Compare and edit your /opt/local/etc/macports.conf to match with the sample which is provided in the same directory.

Then make sure all your ports are installed for architecture x86_64 following the Migration instructions.

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Yes, i am sure with what OS my iMac started out... For whatever reason though the macports.conf was the real issue, copying & editing the default one to the right archs did the trick. – gfr Aug 22 '10 at 19:12
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