autoconf: Systemology

1 
1 6.7 Systemology
1 ===============
1 
1 This section aims at presenting some systems and pointers to
1 documentation.  It may help you addressing particular problems reported
1 by users.
1 
1    Posix-conforming systems (http://www.opengroup.org/susv3) are
1 derived from the Unix operating system
1 (http://www.bell-labs.com/history/unix/).
1 
1    The Rosetta Stone for Unix (http://bhami.com/rosetta.html) contains
1 a table correlating the features of various Posix-conforming systems.
1 Unix History (http://www.levenez.com/unix/) is a simplified diagram of
1 how many Unix systems were derived from each other.
1 
1    The Heirloom Project (http://heirloom.sourceforge.net/) provides
1 some variants of traditional implementations of Unix utilities.
1 
1 Darwin
1      Darwin is also known as Mac OS X.  Beware that the file system
1      _can_ be case-preserving, but case insensitive.  This can cause
1      nasty problems, since for instance the installation attempt for a
1      package having an `INSTALL' file can result in `make install'
1      report that nothing was to be done!
1 
1      That's all dependent on whether the file system is a UFS (case
1      sensitive) or HFS+ (case preserving).  By default Apple wants you
1      to install the OS on HFS+.  Unfortunately, there are some pieces of
1      software which really need to be built on UFS.  We may want to
1      rebuild Darwin to have both UFS and HFS+ available (and put the
1      /local/build tree on the UFS).
1 
1 QNX 4.25
1      QNX is a realtime operating system running on Intel architecture
1      meant to be scalable from the small embedded systems to the hundred
1      processor super-computer.  It claims to be Posix certified.  More
1      information is available on the QNX home page
1      (http://www.qnx.com/).
1 
1 Tru64
1      Documentation of several versions of Tru64
1      (http://h30097.www3.hp.com/docs/) is available in different
1      formats.
1 
1 Unix version 7
1      Officially this was called the "Seventh Edition" of "the UNIX
1      time-sharing system" but we use the more-common name "Unix version
1      7".  Documentation is available in the Unix Seventh Edition Manual
1      (http://plan9.bell-labs.com/7thEdMan/).  Previous versions of Unix
1      are called "Unix version 6", etc., but they were not as widely
1      used.
1