AC_DEFUN([AC_PACKAGE_WANT_NDBM],
  [ AC_CHECK_HEADERS(ndbm.h, [ have_db=true ], [ have_db=false ])
    found=false
    libgdbm=""

    if test $have_db = true; then
      AC_CHECK_LIB(ndbm,dbm_open,found=true,found=false)
      AC_CHECK_LIB(ndbm,dbm_fetch,,found=false)
      AC_CHECK_LIB(ndbm,dbm_store,,found=false)
      AC_CHECK_LIB(ndbm,dbm_close,,found=false)

      if test $found = true; then
        libgdbm="$ndbm"
      fi
    fi

    AC_SUBST(libgdbm)
    AC_SUBST(have_db)
  ])

AC_DEFUN([AC_PACKAGE_WANT_GDBM],
  [ AC_CHECK_HEADER(gdbm-ndbm.h, [ gdbm_ndbm=true; have_db=true ], [ gdbm_ndbm=false; have_db=false ])

    if test $gdbm_ndbm = true; then
        AC_DEFINE(HAVE_GDBM_NDBM_H, [1], [Define to 1 if you have the <gdbm-ndbm.h> header file.])
    else
        AS_UNSET([ac_cv_header_gdbm_ndbm_h])
        AC_CHECK_HEADER(gdbm/ndbm.h, [ gdbm_ndbm_=true; have_db=true ], [ gdbm_ndbm_=false; have_db=false ])
        if test $gdbm_ndbm_ = true; then
            AC_DEFINE(HAVE_GDBM_NDBM_H_, [1], [Define to 1 if you have the <gdbm/ndbm.h> header file.])
        fi
    fi

    found=false
    libgdbm=""

    if test $have_db = true; then
      AC_CHECK_LIB(gdbm,dbm_open,found=true,found=false)
      AC_CHECK_LIB(gdbm,dbm_fetch,,found=false)
      AC_CHECK_LIB(gdbm,dbm_store,,found=false)
      AC_CHECK_LIB(gdbm,dbm_close,,found=false)

      if test $found = true; then
        libgdbm="${libgdbm} -lgdbm"
      fi

      found="no"
      AC_CHECK_LIB(gdbm_compat,dbm_open,found=true,found=false,-lgdbm)
      AC_CHECK_LIB(gdbm_compat,dbm_fetch,,found=false,-lgdbm)
      AC_CHECK_LIB(gdbm_compat,dbm_store,,found=false,-lgdbm)
      AC_CHECK_LIB(gdbm_compat,dbm_close,,found="no",-lgdbm)

      if test $found = true ; then
        libgdbm="${libgdbm} -lgdbm_compat -lgdbm"
      fi
    fi

    AC_SUBST(libgdbm)
    AC_SUBST(have_db)
  ])