Commit af2a40fb authored by Paul Eggert's avatar Paul Eggert

--with-pop is now the default only on MS-Windows

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.
parent 4ac5ac50
......@@ -273,8 +273,10 @@ a POP3 server by default. Versions of the POP protocol older than
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
......
......@@ -232,9 +232,9 @@ AC_DEFUN([OPTION_DEFAULT_ON], [dnl
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],
......@@ -251,9 +251,16 @@ if test "$with_mailutils" = no; then
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
......
......@@ -35,8 +35,9 @@ GNU Mailutils to retrieve email. It is recommended, and is the
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
......
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