Problem reported by N. Jackson (Bug#28597).
This improves an earlier suggestion by Robert Pluim (Bug#28597#47).
* INSTALL, configure.ac, etc/NEWS:
Make --with-pop the default only on native MS-Windows.
POP3 are not supported. While POP3 support is typically enabled,
whether Emacs actually uses POP3 is controlled by individual users;
see the Rmail chapter of the Emacs manual. Unless --with-mailutils is
-in effect, it is a good idea to configure --without-pop so that users
-are less likely to inadvertently read email via insecure channels.
+in effect, it is a good idea to configure without POP3 support so that
+users are less likely to inadvertently read email via insecure
+channels. On native MS-Windows, --with-pop is the default; on other
+platforms, --without-pop is the default.
For image support you may have to download, build, and install the
appropriate image support libraries for image types other than XBM and
m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
])dnl
-# FIXME: The default options '--without-mailutils --with-pop' result
-# in a movemail implementation that supports only unencrypted POP3
-# connections. Encrypted connections should be the default.
+# For retrieving mail, unencrypted network connections are the default
+# only on native MS-Windows platforms. (FIXME: These platforms should
+# also be secure by default.)
AC_ARG_WITH([mailutils],
[AS_HELP_STRING([--with-mailutils],
fi
AC_SUBST([with_mailutils])
-OPTION_DEFAULT_ON([pop],
- [don't support POP mail retrieval with movemail (--without-pop or
- --with-mailutils is recommended, as movemail POP is insecure)])
+AC_ARG_WITH([pop],
+ [AS_HELP_STRING([--with-pop],
+ [Support POP mail retrieval if Emacs movemail is used (not recommended,
+ as Emacs movemail POP is insecure). This is the default only on
+ native MS-Windows.])],
+ [],
+ [case $host in
+ *-mingw*) with_pop=yes;;
+ *) with_pop=no;;
+ esac])
if test "$with_pop" = yes; then
AC_DEFINE(MAIL_USE_POP)
fi
default if GNU Mailutils is installed. When --with-mailutils is not
in effect, the Emacs build procedure by default continues to build and
install a limited 'movemail' substitute that retrieves POP3 email only
-via insecure channels; to avoid this problem, use either
---with-mailutils or --without-pop when configuring.
+via insecure channels. To avoid this problem, use either
+--with-mailutils or --without-pop when configuring; --without-pop
+is the default on platforms other than native MS-Windows.
** The new option 'configure --enable-gcc-warnings=warn-only' causes
GCC to issue warnings without stopping the build. This behavior is