support _disable_auto_rebuilddb macro in posttrans

(cherry picked from commit 250f8777772869bcda1fbc381221aea5f040ce23)

rpm.spec

@@ -1,6 +1,6 @@
 Name:          rpm
 Version:       4.17.0
-Release:       29
+Release:       30
 Summary:       RPM Package Manager
 License:       GPLv2+
 URL:           http://www.rpm.org/
@@ -301,12 +301,15 @@ make check || (cat tests/rpmtests.log; exit 0)
 %posttrans
 {
     set -e
-    dbpath=$(rpm -E %{_dbpath})
-    while [ -e ${dbpath}/Packages ]
-    do
-       date >> /var/log/rebuilddb.log 2>&1
-       rpm -vvv --rebuilddb >> /var/log/rebuilddb.log 2>&1
-    done
+    disable_auto_rebuilddb=$(rpm -E 0%%{?_disable_auto_rebuilddb})
+    if [ ${disable_auto_rebuilddb} -eq 0 ]; then
+        dbpath=$(rpm -E %{_dbpath})
+        while [ -e ${dbpath}/Packages ]
+        do
+            date >> /var/log/rebuilddb.log 2>&1
+            rpm -vvv --rebuilddb >> /var/log/rebuilddb.log 2>&1
+        done
+    fi
 } &
 
 %files -f %{name}.lang
@@ -400,6 +403,9 @@ make check || (cat tests/rpmtests.log; exit 0)
 %{_mandir}/man1/gendiff.1*
 
 %changelog
+* Fri Sep 08 2023 renhongxun<renhongxun@h-partners.com> - 4.17.0-30
+- support _disable_auto_rebuilddb macro in posttrans
+
 * Tue Sep 05 2023 renhongxun<renhongxun@h-partners.com> - 4.17.0-29
 - Fix the coredump which may occur during upgrading of rpm