=head1 SYNOPSIS
-This is a port of Perl version 5, revision 7, to VOS. Perl is a
-scripting or macro language that is popular on many systems. See your
-local computer bookstore for a number of good books on Perl.
+This is a port of Perl version 5 to VOS. Perl is a scripting or
+macro language that is popular on many systems. See L<perlbook>
+for a number of good books on Perl.
+
+These are instructions for building Perl from source. Most people can
+simply download a pre-compiled distribution from the VOS anonymous FTP
+site. If you are running VOS Release 14.2.0 or earlier, download Perl
+from ftp://ftp.stratus.com/pub/vos/posix/alpha/alpha.html. If you are
+running VOS Release 14.3.0 or later, download Perl from
+ftp://ftp.stratus.com/pub/vos/posix/ga/ga.html. Instructions for
+unbundling the Perl distribution file are at
+ftp://ftp.stratus.com/pub/vos/utility/utility.html.
=head2 Stratus POSIX Support
Note that there are two different implementations of POSIX.1
support on VOS. There is an alpha version of POSIX that is
available from the Stratus anonymous ftp site
-(ftp://ftp.stratus.com/pub/vos/posix/alpha/alpha.html). There
-is a generally-available version of POSIX that comes with the
-VOS Standard C compiler and C runtime in VOS Release 14.3.0 or
-higher. This port of POSIX will compile and bind with either
+(ftp://ftp.stratus.com/pub/vos/posix/). There is
+a generally-available version of POSIX that comes with the VOS
+Standard C Compiler or VOS C runtime in VOS Release 14.3.0 or
+higher. This port of perl will compile and bind with either
version of POSIX.
Most of the Perl features should work on VOS regardless of which
attempt by perl.pm to call the following unimplemented POSIX
functions will result in an error message and an immediate and
fatal call to the VOS debugger. They are "dup", "fork", and
-"waitpid". The lack of these functions pretty much prevents you
-from starting VOS commands and grabbing their output in perl.
-The workaround is to run the commands outside of perl, then have
-perl process the output file. These functions are all available
-in the generally-available version of POSIX.
+"waitpid". The lack of these functions prevents you from
+starting VOS commands and grabbing their output in perl. The
+workaround is to run the commands outside of perl, then have perl
+process the output file. These functions are all available in
+the generally-available version of POSIX.
=head1 INSTALLING PERL IN VOS
=item 1
-The VOS Standard C Compiler and Runtime, or the VOS Standard C
-Cross-Compiler. This is a standard Stratus product.
+The VOS Standard C Compiler (or the VOS Standard C
+Cross-Compiler) and the VOS C Runtime. If you are using
+the generally-available version of POSIX support, you may
+instead use the VOS GNU C/C++ Compiler. These are
+standard Stratus products.
=item 2
get the file /pub/vos/posix/alpha/posix.save.evf.gz in
binary file-transfer mode. Or use the Uniform Resource
Locator (URL)
-ftp://ftp.stratus.com/pub/vos/alpha/posix.save.evf.gz from
+ftp://ftp.stratus.com/pub/vos/posix/alpha/posix.save.evf.gz from
your web browser. Instructions for unbundling this file
are at ftp://ftp.stratus.com/pub/vos/utility/utility.html.
This is not a standard Stratus product.
-The generally-available version of POSIX.1 support is
-bundled with the VOS Standard C compiler and Runtime (or
-Cross-Compiler) in VOS Release 14.3.0 or higher. This is a
-standard Stratus product.
+In VOS Release 14.3.0, the generally-available version of
+POSIX.1 support is bundled with the VOS Standard C compiler
+(or Standard C Cross-Compiler). In VOS Release 14.4.0 or
+higher, it is also bundled with the VOS C Runtime. These
+are standard Stratus products.
=item 4
release-compatibility rules, this port of perl may not
execute on VOS Release 12 or earlier.
+=item 5
+
+If you are using the generally-available version of VOS POSIX
+support, then you should also acquire the VOS GNU C/C++ Compiler
+and GNU Tools product because it provides many common Unix or
+POSIX commands. When perl is built with this version of POSIX
+support, it assumes that it can find "bash", "sed" and other
+POSIX-compatible commands in the directory
+/system/gnu_library/bin.
+
=back
To build perl 5, change to the "vos" subdirectory and type the
Note that the generally-available version of POSIX.1 support is
not available for the mc68020 or i80860 processors.
+Use the "-version alpha" control argument to build perl with
+the alpha version of POSIX support, and use the "-version
+ga" control argument to build it with the
+generally-available version of POSIX. The default is "ga".
+
+Use the "-compiler cc" control argument to build perl with
+the VOS Standard C compiler. Use the "-compiler gcc"
+control argument to build it with the GNU GCC compiler. The
+default is "cc".
+
You must have purchased the VOS Standard C Cross Compiler in
order to compile perl for a processor type that is different
from the processor type of the module.
=head1 USING PERL IN VOS
-=head2 Unimplemented Features
+=head2 Unimplemented Features of Perl on VOS
If perl is built with the alpha version of VOS POSIX.1 support
and if it attempts to call an unimplemented VOS POSIX.1
functions are unimplemented and what the error message looks
like, compile and execute "test_vos_dummies.c".
-=head2 Restrictions
+=head2 Restrictions of Perl on VOS
This port of Perl version 5 to VOS prefers Unix-style,
slash-separated pathnames over VOS-style greater-than-separated
=head1 AUTHOR
-Paul Green (Paul_Green@stratus.com)
+Paul Green (Paul.Green@stratus.com)
=head1 LAST UPDATE
-October 24, 2000
+November 29, 2001
=cut
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