+dnl Do you want client-side support for pop?
+undefine([pop])dnl
+AC_ARG_ENABLE(pop,
+[ --enable-pop enable client-side support for pop])
+dnl The old redundant --enable-nmh-pop is deprecated and undocumented.
+if test x"$enable_nmh_pop" = x"yes"; then
+ enable_pop=yes
+fi
+