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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 distribu-
       tion 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

       If you are running VOS Release 14.4.1 or later, you can obtain a pre-compiled, supported copy of perl by pur-
       chasing Release 2.0.1 (or later) 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 your 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 platform.

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

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

       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 function-
            ality.

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

       3    If you have a Stratus Continuum (PA-RISC-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 com-
            piler 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 function-
            ality.

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

       4    If you have a Stratus Continuum (PA-RISC-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 function-
            ality.

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

       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 (or later) 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.stra-
       tus.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 start-
       ing 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 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.

       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 standard 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.stra-
            tus.com and 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/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 /sys-
            tem/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-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.

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

       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 compile_full_perl".  This will configure, build, and test
       perl.

       Installing Perl 5 on VOS


       1   If you have built perl using the Configure script, ensure that you have modify permission to ">sys-
           tem>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 directories.

       3   While there are currently no architecture-specific extensions or modules distributed with perl, the follow-
           ing 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-indepen-
           dent 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 recover-
       able.  See vos_dummies.c for a list of the unimplemented POSIX.1 functions.  To see what functions are unimple-
       mented 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 Jan-
       uary 17, 2038.

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

       Handling of underflow and overflow

       Prior to VOS Release 14.7.0, VOS does not support automatically mapping overflowed floating-point values to
       +infinity, nor automatically mapping underflowed floating-point values to zero, unlike many other platforms.
       The Perl pack function has been modified to perform such mapping in software on VOS.  Performing other float-
       ing-point computations that underflow or overflow will probably result in SIGFPE.  Don't push your luck.

       As of VOS Release 14.7.0, the VOS POSIX runtime sets up the PA-RISC hardware floating-point status register so
       that the overflow and underflow exceptions do not trap, but instead automatically convert the result to infin-
       ity or zero, as appropriate.  As of this writing, there are still floating-point operations that can trap, for
       example, subtracting two infinite values.  This is recorded as suggestion posix-1022, which is not yet fixed.

TEST STATUS
       When Perl 5.8.3 is built using the native build process on VOS Release 14.7.0 and GNU C++/GNU Tools 2.0.2a, all
       but three attempted tests either pass or result in TODO (ignored) failures.  The tests that fail are:

       t/io/tell.t, test 28 t/op/pack.t, test 39 lib/Net/ing/t/450_service.t, test 8

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; consult 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 (or
       later) product from Stratus Technologies, along with a support contract (or from anyone else who will sell you
       support).

AUTHOR
       Paul Green (Paul.GreenATstratus.com)

LAST UPDATE
       January 15, 2004



perl v5.8.8                       2006-01-07                        PERLVOS(1)