ac_prog_mysqld

Check for the program 'mysqld' let script continue if exists & works pops up error message if not.

Besides checking existence, this macro also set these environment variables upon completion:

  MYSQLD = which mysqld

AC_DEFUN([AC_PROG_MYSQLD],[
AC_REQUIRE([AC_EXEEXT])dnl
AC_PATH_PROG(MYSQLD, mysqld$EXEEXT, nocommand)
if test "$MYSQLD" = nocommand; then
	AC_MSG_ERROR([mysqld not found in $PATH])
fi;dnl
])