AC_CHECK_PROGS(regex_cmd, sed)
if test x$regex_cmd = "x"; then
AC_MSG_ERROR([error. sed is required to build the default menu file.])
fi
dnl Check for system header files
AC_CHECK_PROGS(regex_cmd, sed)
if test x$regex_cmd = "x"; then
AC_MSG_ERROR([error. sed is required to build the default menu file.])
fi
dnl Check for system header files