This is the Tru64 README file for netatalk.

1.  Unfortunately, AppleTalk is not available for Digital Unix or Tru64.
    The reason for this is the kernel patches which Netatalk requires
    cannot be ported to Tru64. If anyone has the kernel source of Tru64
    they are welcomed to port the AppleTalk modules themselves.

    As a result, only AppleShare over IP (ASIP) works with Tru64. That
    is, the program afpd. papd and atalkd compile, but doesn't really
    work. Anything that requires AppleTalk doesn't work.

2.  Netatalk compiles on various versions of Tru64 V4.x . However, the
    Tru64 C compiler does not seem to work. However, Netatalk has been
    successfully compiled, linked and runned with gcc-2.95.3 . GNU Make
    might also be required.

3.  A peculiar bug in Netatalk has been noticed on a single Tru64
    machine. However, because other Tru64 machines have not affected, a
    patch will not be forthcoming until the circumstances where the bug
    hits is isolated and a more elegant and appropriate patch can be
    found. In the meantime, there is a description of the bug below. Any
    users affected can attempt the workarounds provided. The user is
    urged to report this to the mailing list so that this bug can be
    isolated and removed.

    HAVE_GCC_MEMCPY_BUG
    Description -
       It appears that memcpy() under Tru64 can fail under some
    circumstances. This maybe due to the fact that Netatalk is compiled
    with gcc, but since only gcc can compile Netatalk, this is a mute
    point.

    Symptoms -
       The symptoms of this bug is that a 18432 byte file uploaded to
    the server would upload correctly, but a 18433 byte file would
    result in a sparse file many megabytes big (16MB+). However, due to
    the low-level nature of memcpy(), there is no reason why other
    symptoms could not occur.

    Workarounds -
       There are two known workarounds at this stage.
    - The first is to #define the macro HAVE_GCC_MEMCPY_BUG. This forces
    netatalk to use bcopy() in a few (but not all) cases within the code
    and is enough to stop the bug from occurring. This is the easiest
    workaround and would merely alter the standard compilation steps to

    ./configure --with-cflags="-DHAVE_GCC_MEMCPY_BUG"
    make
    make install

    - The second workaround is to manually remove the optimisation flag
    "-O2" from within configure and/or configure.in. Although, this
    isn't the preferred workaround, it shows that the compiler is
    (at least) partially at fault.