diff -aur xen.old/Makefile xen/Makefile
--- xen.old/Makefile	2008-04-10 15:49:56.000000000 +0200
+++ xen/Makefile	2008-04-10 15:50:12.000000000 +0200
@@ -95,7 +95,7 @@
 	    -e 's/@@whoami@@/$(USER)/g' \
 	    -e 's/@@domain@@/$(shell ([ -x /bin/dnsdomainname ] && /bin/dnsdomainname) || ([ -x /bin/domainname ] && /bin/domainname || echo [unknown]))/g' \
 	    -e 's/@@hostname@@/$(shell hostname)/g' \
-	    -e 's!@@compiler@@!$(shell $(CC) $(CFLAGS) -v 2>&1 | grep -i "gcc.*version")!g' \
+	    -e 's!@@compiler@@!$(shell $(CC) $(CFLAGS) -v 2>&1 | grep -i \"gcc.*version\")!g' \
 	    -e 's/@@version@@/$(XEN_VERSION)/g' \
 	    -e 's/@@subversion@@/$(XEN_SUBVERSION)/g' \
 	    -e 's/@@extraversion@@/$(XEN_EXTRAVERSION)/g' \