diff -ur xen-tools.orig//xen-tools-3.4.2-r3.ebuild xen-tools//xen-tools-3.4.2-r3.ebuild
--- xen-tools.orig//xen-tools-3.4.2-r3.ebuild	2011-09-25 04:55:10.000000000 +0800
+++ xen-tools//xen-tools-3.4.2-r3.ebuild	2011-09-25 22:16:41.781777900 +0800
@@ -138,7 +138,7 @@
 		append-flags -fno-strict-overflow
 	fi
 
-	emake -C tools ${myopt} || die "compile failed"
+	emake CC=$(tc-getCC) -C tools ${myopt} || die "compile failed"
 
 	if use doc; then
 		sh ./docs/check_pkgs || die "package check failed"