Error on "sudo port -v upgrade outdated"

[Jeremy Lavergne]

> Don't fiddle with the sym links in /usr/bin by hand !! You will for sure break something.
> 
> MacPorts doesn't need the compiler to be 'usr/bin/gcc' in order to use it. It will happily used the versioned binaries in there directly, if configured to do so.

Try building the failed package X again:
sudo port clean X
sudo port install X configure.compiler=gcc-4.2

MacPorts chooses its default compiler based a combination of architecture and Xcode version ( src/port1.0/portconfigure.tcl's portconfigure::get_compiler_fallback). I believe GCC 4.0 should only get used if Xcode 3.2 with OS X 10.4.

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