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From: kirchner@umn-cs.cs.umn.edu (Roger B. Kirchner)
Newsgroups: comp.sys.next
Subject: libc.a replaced with libsys.a in 2.0
Message-ID: <1991Jan2.125711.6400@cs.umn.edu>
Date: 2 Jan 91 12:57:11 GMT
Sender: kirchner@cs.umn.edu (Roger B. Kirchner)
Organization: University of Minnesota, Minneapolis - CSCI Dept.
Lines: 16

The developer release note for 2.0, OperatingSystem.rtf, contains the
following:

The following incompatible changes have been made to the operating
system since Release 1.0.

libc.a is not shipped with release 2.0.  All routines contained in
libc.a are also contained in the shared library libsys.a which should
be used instead of libc.a.  libc.a is not shipped because as a normal
archive it is impossible for improvements and system interface changes
made to library routines to be applicable to existing applications
without those applications being relinked.  Applications referencing
shared libraries, because they are bound at runtime, always access the
most recent release.  Release 1.0 applications linked against libc.a
may not be compatible with release 2.0 until they are relinked with
libsys.a.