ac_check_mysql_db

Check if the specified MySQL database exists, if yes set your environment variable to that database name else unset your environment variable

Example:

     AC_CHECK_MYSQL_DB(DBNAME, [fishmarket])
     if test x$DBNAME = xfishmarket; then
         bla..bla..bla..
     else
         bla..bla..bla..
     fi

AC_DEFUN([AC_CHECK_MYSQL_DB],[
AC_REQUIRE([AC_PROG_MYSQLSHOW])dnl
AC_MSG_CHECKING([for MySQL db $2])
if $MYSQLSHOW -u root -prootpass $2 > /dev/null 2>&1; then
        $1=$2
        AC_MSG_RESULT([yes])
else
        unset $1
        AC_MSG_RESULT([no])
fi;dnl
])