--- portage_old/app-admin/eselect-python/eselect-python-20111108.ebuild	
+++ portage_old/app-admin/eselect-python/eselect-python-20111108.ebuild	
@@ -52,7 +52,7 @@ 
 }
 src_compile() {
-       use prefix && append-flags -DEPREFIX='"\"'"${EPREFIX}"'\""'
+       { echo "${EPREFIX}" | grep '[^/]' || use prefix ; } && append-flags -DEPREFIX='"\"'"${EPREFIX}"'\""'
        econf || die
        emake || die
 }