--- rpm-4.4.9/build/parseBuildInstallClean.c	2008-01-30 23:16:55.347346942 +0200
+++ rpm-4.4.9/build/parseBuildInstallClean.c	2008-01-30 23:22:24.241459876 +0200
@@ -47,11 +47,10 @@
 	    appendStringBuf(*sbp, s);
 	s = _free(s);
     } else if (parsePart == PART_CLEAN) {
-	const char * s = rpmExpand("%{?buildroot:rm -rf '%{buildroot}'\n}", NULL);
+	const char * s = rpmExpand("%{?__spec_clean_body}%{!?__spec_clean_body:%{?buildroot:rm -rf '%{buildroot}'\n}}\n", NULL);
 	if (s && *s)
 	    appendStringBuf(*sbp, s);
 	s = _free(s);
-	sbp = NULL;	/* XXX skip %clean from spec file. */
     }
 
     /* There are no options to %build, %install, %check, or %clean */