--- rpm-5.4.9/build/files.c.dups_terminate~	2012-05-15 02:15:44.772405881 +0200
+++ rpm-5.4.9/build/files.c	2012-05-15 02:15:44.779405916 +0200
@@ -2917,7 +2917,8 @@ exit:
 
 /* auxiliary function for checkDuplicateFiles() */
 /* XXX need to pass Header because fi->h is NULL */
-static int fiIntersect(/*@null@*/ rpmfi fi1, /*@null@*/ rpmfi fi2, size_t buildrootL)
+static int fiIntersect(/*@null@*/ rpmfi fi1, /*@null@*/ rpmfi fi2,
+	size_t buildrootL, int _duplicate_files_terminate_build)
 	/*@globals internalState @*/
 	/*@modifies fi1, fi2, internalState @*/
 {
@@ -2955,7 +2956,7 @@ static int fiIntersect(/*@null@*/ rpmfi
 	he->tag = RPMTAG_NVRA;
 	N2 = (headerGet(fi2->h, he, 0) ? he->p.str : NULL);
 
-	rpmlog(RPMLOG_WARNING,
+	rpmlog(_duplicate_files_terminate_build ? RPMLOG_ERR : RPMLOG_WARNING,
 	       _("File(s) packaged into both %s and %s:\n%s"),
 	       N1, N2, rpmiobStr(dups));
 
@@ -2972,7 +2973,8 @@ static int fiIntersect(/*@null@*/ rpmfi
  * @param spec		spec file control structure
  * @return		number of duplicate files
  */
-static int checkDuplicateFiles(Spec spec, size_t buildrootL)
+static int checkDuplicateFiles(Spec spec, size_t buildrootL,
+	int _duplicate_files_terminate_build)
 	/*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
 	/*@modifies *spec->packages,
 		rpmGlobalMacroContext, fileSystem, internalState @*/
@@ -2997,7 +2999,7 @@ static int checkDuplicateFiles(Spec spec
 #endif
 	    if (fi2 == NULL) continue;
 	    (void) rpmfiSetHeader(fi2, pkg2->header);
-	    n += fiIntersect(fi1, fi2, buildrootL);
+	    n += fiIntersect(fi1, fi2, buildrootL, _duplicate_files_terminate_build);
 	    (void) rpmfiSetHeader(fi2, NULL);
 	    fi2 = rpmfiFree(fi2);
 	}
@@ -3181,9 +3183,13 @@ rpmRC processBinaryFiles(Spec spec, int
     }
 
     if (res == RPMRC_OK) {
+	int _duplicate_files_terminate_build =
+	    rpmExpandNumeric("%{?_duplicate_files_terminate_build}");
 	if (checkUnpackagedFiles(spec) > 0)
 	    res = RPMRC_FAIL;
-	(void) checkDuplicateFiles(spec, buildrootL);
+	if (checkDuplicateFiles(spec, buildrootL, _duplicate_files_terminate_build) > 0 &&
+		_duplicate_files_terminate_build)
+	    res = RPMRC_FAIL;
 	(void) checkUnpackagedSubdirs(spec, buildrootL);
     }
     
--- rpm-5.4.9/macros/mandriva.in.dups_terminate~	2012-05-08 05:06:12.000000000 +0200
+++ rpm-5.4.9/macros/mandriva.in	2012-05-15 02:16:18.723578174 +0200
@@ -122,6 +122,8 @@ end\
 # use XZ to compress binary packages:
 %_binary_payload w5.xzdio
 
+%_duplicate_files_terminate_build	1
+
 %_enable_debug_packages 1