dnl LOG4CPLUS_CHECK_HEADER([header], [preprocessor symbol to define])
AC_DEFUN([LOG4CPLUS_CHECK_HEADER],
  [AH_TEMPLATE([$2])
   AC_CHECK_HEADER([$1], [AC_DEFINE([$2])])])

dnl LOG4CPLUS_CHECK_FUNCS([function], [preprocessor symbol to define])
AC_DEFUN([LOG4CPLUS_CHECK_FUNCS],
  [AH_TEMPLATE([$2])
   AC_CHECK_FUNCS([$1], [AC_DEFINE([$2])])])

dnl Check for use with AC_ARG_ENABLE macro.
AC_DEFUN([LOG4CPLUS_CHECK_YESNO],
  [AS_CASE(["$1"],
    [yes], [],
    [no], [],
    [AC_MSG_ERROR([bad value $1 for $2])])])