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README.packaging
================
fetchmail 6.4 changes relevant for packagers
--------------------------------------------
Greetings, dear packager!
The bullet points below mention a few useful hints for package(r)s:
- Mind the license difficulties around GPL'd software mixing in
OpenSSL/SSLeay licensed or Apache licensed code!
You cannot use OpenSSL derivative works such as LibreSSL that incur the
OpenSSL or SSLeay licensing terms, see COPYING for details.
- Note OpenSSL's license changes between v1.1.1 and v3.0. See COPYING.
- Fetchmail requires OpenSSL or wolfSSL, for details, see README.SSL.
Fetchmail 6.4 tolerates 1.0.2f for now but assumes the distributor backports
security fixes for it. Only link against SSL/TLS library versions
- Your configuration and examples MUST NOT encourage setups running
fetchmail as the root user. For system-wide setups, a separate user,
possibly in a dedicated group of its own, should be used.
If you want to support --mda setups that impersonate other users,
DO NOT suggest or endorse unmaintained software such as procmail.
Instead, suggest maintained software that supports a "delivery mode",
for instance, Sam Varshavchik's maildrop (which is part of the Courier-MTA
and available separately) and which was designed to be installed set-uid.
- Fetchmail uses GNU automake/autoconf and supports all common targets and
overrides such as "make install-strip" or "DESTDIR=..." for staging areas.
- The fetchmailconf script is named fetchmailconf.py, automake will install it
into Python's top-level site-packages directory and byte-compile it (so you
need to package or remove fetchmailconf.pyc and fetchmailconf.pyo as well).
> If you want to defeat Python byte-code compilation and would rather like to
install fetchmailconf.py yourself, you can add
PYTHON=:
to the ./configure command or pass this in the environment. This pretends
to the configure script that no Python interpreter were installed.
- The Makefile generates a two-line "fetchmailconf" /bin/sh wrapper script that
executes the actual fetchmailconf.py with the python installation found at
configuration time, so that users can still type "fetchmailconf" rather than
"python fetchmailconf".
- Note that fetchmailconf.py supports a few command line arguments, so if you
use local wrapper scripts, be sure they pass on their own arguments properly.
Remember to use "$@" (with quotes) in shells, not $*.
- There is now a dummy fetchmailconf manual page which will just source (roff's
".so" command) the fetchmail manual page for now. You can of course keep your
symlinks in place and ignore this dummy. IF you install the dummy and
compress your man pages, be sure to test "man fetchmailconf", on some
systems, you'll need to adjust the ".so" command to point to the compressed
version.
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