55 lines
2.6 KiB
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55 lines
2.6 KiB
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Notes for Distributors
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========================
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This document has information for anyone who is packaging copies of Botan for
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use by downstream developers, such as through a Linux distribution or other
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package management system.
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Recommended Options
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------------------------
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In most environments, zlib, bzip2, and sqlite are already installed, so there is
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no reason to not include support for them in Botan as well. Build with options
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``--with-zlib --with-bzip2 --with-sqlite3`` to enable these features.
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Set Path to the System CA bundle
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---------------------------------
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Most Unix/Linux systems maintain a list of trusted CA certificates at some well
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known path like ``/etc/ssl/certs/ca-certificates.crt`` or
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``/etc/ssl/cert.pem``. Unfortunately the exact path varies between systems. Use
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``--system-cert-bundle=PATH`` to set this path. If the option is not used,
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``configure.py`` tries a list of known locations.
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Set Distribution Info
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------------------------
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If your distribution of Botan involves creating library binaries, use the
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configure.py flag ``--distribution-info=`` to set the version of your
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packaging. For example Foonix OS might distribute its 4th revision of the
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package for Botan 2.1.3 using ``--distribution-info='Foonix 2.1.3-4'``. The
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string is completely free-form, since it depends on how the distribution numbers
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releases and packages.
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Any value set with ``--distribution-info`` flag will be included in the version
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string, and can read through the ``BOTAN_DISTRIBUTION_INFO`` macro.
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Minimize Distribution Patches
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------------------------------
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We (Botan upstream) *strongly* prefer that downstream distributions maintain no
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long-term patches against Botan. Even if it is a build problem which probably
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only affects your environment, please open an issue on github and include the
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patch you are using. Perhaps the issue does affect other users, and even if not
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it would be better for everyone if the library were improved so it were not
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necessary for the patch to be created in the first place. For example, having to
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modify or remove a build data file, or edit the makefile after generation,
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suggests an area where the build system is insufficiently flexible.
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Obviously nothing in the BSD-2 license prevents you from distributing patches or
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modified versions of Botan however you please. But long term patches by
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downstream distributors have a tendency to bitrot and sometimes even result in
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security problems (such as in the Debian OpenSSL RNG fiasco) because the patches
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are never reviewed by the library developers. So we try to discourage them, and
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work to ensure they are never necessary.
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