+dnl Old versions of mysql_config does not have "--variable" option
+ if test $? -ne 0
+ then
-+ MYSQL_LIB_DIR=`mysql_config --libs | sed 's/^.*-L\([^ ]\+\).*$/\1/'`
++ MYSQL_LIB_DIR=`mysql_config --libs | sed 's/^.*-L\([[^ ]]\+\).*$/\1/'`
+ fi
+fi
+