Support for the ARM 64 bit CPU architecture (aarch64) was introduced in autoconf 2.69. virt-top appears to use an earlier version of autoconf, preventing its being built. This can be fixed in of three ways (In order of preference): 1. Work with upstream to migrate the package to autoconf 2.69. 2. Rerun autoconf or autoreconf in %prep or %build prior to running configure. 3. Apply the patch at http://ausil.fedorapeople.org/aarch64/virt-top/virt-top-aarch64.patch which updates config.guess and config.sub to recognize aarch64.
Fixed in warning: bogus date in %changelog: Tue Mar 19 2008 Richard W.M. Jones <rjones> - 0.4.1.1-1 virt-top-1.0.8-5.fc20