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RedHat 9 (Linux i386) - man page for perlvos (redhat section 1)

PERLVOS(1)			 Perl Programmers Reference Guide		       PERLVOS(1)

NAME
       README.vos - Perl for Stratus VOS

SYNOPSIS
       This file contains notes for building perl on the Stratus VOS operating system.	Perl is a
       scripting or macro language that is popular on many systems.  See 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.stra-
       tus.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

       If you are running VOS Release 14.4.1 or later, you can obtain a pre-compiled, supported
       copy of perl by purchasing Release 2.0.1 of the VOS GNU C++ and GNU Tools product from
       Stratus Technologies.

       Multiple methods to build perl for VOS

       If you elect to build perl from its source code, you have several different ways that you
       can build perl.	The method that you use depends on the version of VOS that you are using
       and on the architecture of you Stratus hardware platform.

       1    If you have a Stratus XA2000 (Motorola 68k-based) platform, you must build perl using
	    the alpha version of VOS POSIX support and using the VOS Standard C Cross-compiler.
	    You must build perl on VOS Release 14.1.0 (or later) on an XA/R or Continuum plat-
	    form.

	    This version of perl is properly called "miniperl" because it does not contain the
	    complete perl functionality.

	    You must build perl with the compile_perl.cm command macro found in the vos subdirec-
	    tory.

       2    If you have a Stratus XA/R (Intel i860-based) platform, you must build perl using the
	    alpha version of VOS POSIX support and using the VOS Standard C compiler or
	    cross-compiler.  You must build perl on VOS Release 14.1.0 (or later) on an XA/R or
	    Continuum platform.

	    This version of perl is properly called "miniperl" because it does not contain the
	    complete perl functionality.

	    You must build perl with the compile_perl.cm command macro found in the vos subdirec-
	    tory.

       3    If you have a Stratus Continuum (PARISC-based) platform that is running a version of
	    VOS earlier than VOS 14.3.0, you must build perl using the alpha version of VOS POSIX
	    support and using the VOS Standard C compiler or cross-compiler.  You must build perl
	    on VOS Release 14.1.0 (or later) on an XA/R or Continuum platform.

	    This version of perl is properly called "miniperl" because it does not contain the
	    complete perl functionality.

	    You must build perl with the compile_perl.cm command macro found in the vos subdirec-
	    tory.

       4    If you have a Stratus Continuum (PARISC-based) platform that is running VOS Release
	    14.3.0 through VOS Release 14.4.1, you must build perl using the generally-available
	    version of VOS POSIX support, and using either the VOS Standard C compiler or the VOS
	    GNU C compiler.  You must build perl on VOS Release 14.3.0 (or later) on a Continuum
	    platform.

	    This version of perl is properly called "miniperl" because it does not contain the
	    complete perl functionality.

	    You must build perl with the compile_perl.cm command macro found in the vos subdirec-
	    tory.

       5    If you have a Stratus Continuum (PA-RISC-based) platform that is running VOS Release
	    14.5.0 or later, you can either use the previous method to build "miniperl" or you
	    can build "full perl", which contains the complete functionality of perl.  I strongly
	    recommend that you build full perl.  To build full perl, you must use the generally-
	    available version of VOS POSIX support.  You must use the VOS GNU C compiler and the
	    VOS GNU C/C++ and GNU Tools Release 2.0.1 product.	You must build full perl on VOS
	    Release 14.5.0 (or later) on a Continuum platform.

	    You must build full perl with the compile_full_perl.cm command macro found in the vos
	    subdirectory.

       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 VOS Release 14.3.0 or higher.  This port of POSIX will
       compile and bind with either version of POSIX.

       Most of the Perl features should work on VOS regardless of which version of POSIX that you
       are using.  However, the alpha version of POSIX is missing a number of key functions, and
       therefore any 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 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.

INSTALLING PERL IN VOS
       Compiling Perl 5 on VOS

       Before you can build Perl 5 on VOS, you need to have or acquire the following additional
       items.

       1    The VOS Standard C Compiler (or the VOS Standard C Cross-Compiler) and the VOS C Run-
	    time.  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.

       2    Either the VOS OS TCP/IP or STCP product set.  If you are building with the alpha
	    version of POSIX you need the OS TCP/IP product set.  If you are building with the
	    generally-available version of POSIX you need the STCP product set.  These are stan-
	    dard Stratus products.

       3    Either the alpha or generally-available version of the VOS POSIX.1 environment.

	    The alpha version of POSIX.1 support is available on the Stratus FTP site.	Login
	    anonymously to ftp.stratus.com and get the file
	    /pub/vos/posix/alpha/posix.save.evf.gz in binary file-transfer mode.  Or use the Uni-
	    form Resource Locator (URL) ftp://ftp.stra-
	    tus.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.

	    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.

       4    You must compile this version of Perl 5 on VOS Release 14.1.0 or higher because some
	    of the perl source files contain more than 32,767 source lines.  Due to VOS release-
	    compatibility rules, this port of perl may not execute on VOS Release 12 or earlier.

       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.  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.

       To build perl using the supplied VOS command macros, change to the "vos" subdirectory and
       type the command "compile_perl -processor X", where X is the processor type (mc68020,
       i80860, pa7100, pa8000) that you wish to use.  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-avail-
       able 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.

       Note that code compiled for the pa7100 processor type can execute on the PA7100, PA8000,
       PA8500 and PA8600 processors, and that code compiled for the pa8000 processor type can
       execute on the PA8000, PA8500 and PA8600 processors.

       To build full perl using the supplied Configure script and makefiles, change to the "vos"
       subdirectory and type the command "compile_full_perl" or "start_process com-
       pile_full_perl".  This will configure, build, and test perl.  All of the test cases that
       are executed should pass.

       Installing Perl 5 on VOS

       1   If you have built perl using the Configure script, ensure that you have modify permis-
	   sion to ">system>ported" and type

		gmake install

       2   If you have built perl using any of the other methods, type

		install_perl -processor PROCESSOR -name NAME

	   where PROCESSOR is mc68020, i80860, pa7100, or pa8000, as appropriate, and NAME is
	   perl or perl5, according to which name you wish to use.

	   This command macro will install perl and all of its related files in the proper direc-
	   tories.

       3   While there are currently no architecture-specific extensions or modules distributed
	   with perl, the following directories can be used to hold such files:

		>system>ported>lib>perl5>5.8.0>68k
		>system>ported>lib>perl5>5.8.0>860
		>system>ported>lib>perl5>5.8.0>7100
		>system>ported>lib>perl5>5.8.0>8000

       4   Site-specific perl extensions and modules can be installed in one of two places.  Put
	   architecture-independent files into:

		>system>ported>lib>perl5>site_perl>5.8.0

	   Put site-specific architecture-dependent files into one of the following directories:

		>system>ported>lib>perl5>site_perl>5.8.0>68k
		>system>ported>lib>perl5>site_perl>5.8.0>860
		>system>ported>lib>perl5>site_perl>5.8.0>7100
		>system>ported>lib>perl5>site_perl>5.8.0>8000

       5   You can examine the @INC variable from within a perl program to see the order in which
	   Perl searches these directories.

USING PERL IN VOS
       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 function, it will print a fatal error message and enter the
       VOS debugger.  This error is not recoverable.  See vos_dummies.c for a list of the unim-
       plemented POSIX.1 functions.  To see what functions are unimplemented and what the error
       message looks like, compile and execute "test_vos_dummies.c".

       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 pathnames.	VOS-style pathnames should work in most contexts,
       but if you have trouble, replace all greater-than characters by slash characters.  Because
       the slash character is used as a pathname delimiter, Perl cannot process VOS pathnames
       containing a slash character in a directory or file name; these must be renamed.

       This port of Perl also uses Unix-epoch date values internally.  As long as you are dealing
       with ASCII character string representations of dates, this should not be an issue.  The
       supported epoch is January 1, 1980 to January 17, 2038.

       See the file pod/perlport.pod for more information about the VOS port of Perl.

       Handling of underflow and overflow

       VOS does not support automatically mapping overflowed floating-point values to +infinity,
       nor automatically mapping underflowed floating-point values to -infinity, unlike many
       other platforms.  The Perl pack function has been modified to perform such mapping in
       software on VOS.  Performing other floating-point computations that underflow or overflow
       will probably result in SIGFPE.	Don't push your luck.

TEST STATUS
       When Perl is built using the native build process on VOS Release 14.5.0 and GNU C++/GNU
       Tools 2.0.1, all attempted tests either pass or result in TODO (ignored) failures.

SUPPORT STATUS
       I'm offering this port "as is".	You can ask me questions, but I can't guarantee I'll be
       able to answer them.  There are some excellent books available on the Perl language; con-
       sult a book seller.

       If you want a supported version of perl for VOS, purchase the VOS GNU C++ and GNU Tools
       Release 2.0.1 product from Stratus Technologies, along with a support contract (or from
       anyone else who will sell you support).

AUTHOR
       Paul Green (Paul.Green@stratus.com)

LAST UPDATE
       May 13, 2002

perl v5.8.0				    2003-02-18				       PERLVOS(1)


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