>>> Unpacking source...
>>> Unpacking liblastfm-0.3.0.tar.bz2 to /var/tmp/portage/media-libs/liblastfm-0.3.0/work
>>> Source unpacked in /var/tmp/portage/media-libs/liblastfm-0.3.0/work
>>> Preparing source in /var/tmp/portage/media-libs/liblastfm-0.3.0/work/liblastfm-0.3.0 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/media-libs/liblastfm-0.3.0/work/liblastfm-0.3.0 ...
/usr/bin/ruby: no such file to load -- auto_gem (LoadError)
 * ERROR: media-libs/liblastfm-0.3.0 failed:
 *   configure failed
 * 
 * Call stack:
 *     ebuild.sh, line  49:  Called src_configure
 *   environment, line 968:  Called die
 * The specific snippet of code:
 *       ./configure --prefix "${ROOT}usr" --no-strip --release || die "configure failed"
 * 
 * If you need support, post the output of 'emerge --info =media-libs/liblastfm-0.3.0',
 * the complete build log and the output of 'emerge -pqv =media-libs/liblastfm-0.3.0'.
 * The complete build log is located at '/var/log/portage/media-libs:liblastfm-0.3.0:20091111-144410.log'.
 * The ebuild environment file is located at '/var/tmp/portage/media-libs/liblastfm-0.3.0/temp/environment'.
 * S: '/var/tmp/portage/media-libs/liblastfm-0.3.0/work/liblastfm-0.3.0'