fi
grep 'Error' "$logfile"
-grep 'warn' "$logfile"
+#### Ignore the warning when sbr/dtimep.c is built with flex 2.5.36
+#### or 2.5.37.
+grep 'warn' "$logfile" | \
+ grep -v 'sbr/dtimep.c:.*comparison between signed and unsigned'
if [ $status -ne 0 ]; then
echo build failed!
echo build log is in "$logfile"