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Postfix Documentation
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Building Postfix on systems without Berkeley DB

Many commercial UNIXes ship without Berkeley DB support. Examples are Solaris, HP-UX, IRIX, UNIXWARE. In order to build Postfix with Berkeley DB support you need to download and install the source code from https://www.sleepycat.com/

Warning: some Linux system libraries use Berkeley DB, as do some third-party libraries such as SASL. If you compile Postfix with a different Berkeley DB implementation, then every Postfix program will dump core because either the system library, SASL library, or Postfix itself ends up using the wrong version.

The more recent Berkeley DB versions have a compile-time switch, "--with-uniquename", which renames the symbols so that multiple versions of Berkeley DB can co-exist in the same application. Although wasteful, this may be the only way to keep things from falling apart.

To build Postfix after you installed the Berkeley DB from https://www.sleepycat.com/, use something like:

% make tidy
% make makefiles CCARGS="-DHAS_DB -I/usr/local/BerkeleyDB/include" \
    AUXLIBS="-L/usr/local/BerkeleyDB/lib -ldb"
% make

Solaris needs this:

% make tidy
% make makefiles CCARGS="-DHAS_DB -I/usr/local/BerkeleyDB/include" \
    AUXLIBS="-R/usr/local/BerkeleyDB/lib -L/usr/local/BerkeleyDB/lib -ldb"
% make

The exact pathnames depend on the Berkeley DB version, and on how it was installed.

Warning: the file format produced by Berkeley DB version 1 is not compatible with that of versions 2 and 3 (versions 2 and 3 have the same format). If you switch between DB versions, then you may have to rebuild all your Postfix DB files.

Warning: if you use Berkeley DB version 2 or later, do not enable DB 1.85 compatibility mode. Doing so would break fcntl file locking.

Warning: if you use Perl to manipulate Postfix's Berkeley DB files, then you need to use the same Berkeley DB version in Perl as in Postfix.

Postfix Documentation
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