On (kubuntu) Ubuntu 11.10 amd64, gcc version 4.6.1-9ubuntu3 Using the 1.5.1 source, and the --enable-win64 option on ./configure. It seems to ./configure and make ok, I solved the dependencies early on, but during install it complains of this: Code: Error in file "/usr/share/applications/gnumeric.desktop": "zz-application/zz-winassoc-xls" is an invalid MIME type ("zz-application" is an unregistered media type) Warning in file "/usr/share/applications/xarchiver.desktop": usage of MIME type "multipart/x-zip" is discouraged ("multipart" is a media type that probably does not make sense in this context) [Rolling Eyes] Whatever the hell that means. I did a little googling, the only thing I've found about the zz-application is it's affected Fedora and a couple others in the past for various applications, but was supposedly fixed. What do?