| [3181] | 1 | If you read this file _as_is_, just ignore the funny characters you see.
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| 2 | It is written in the POD format (see pod/perlpod.pod) which is specially
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| 3 | designed to be readable as is.
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| 4 |
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| 5 | =head1 NAME
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| 6 |
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| 7 | README.os400 - Perl version 5 on OS/400
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| 8 |
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| 9 | =head1 DESCRIPTION
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| 10 |
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| 11 | This document describes various features of IBM's OS/400 operating
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| 12 | system that will affect how Perl version 5 (hereafter just Perl) is
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| 13 | compiled and/or runs.
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| 14 |
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| 15 | By far the easiest way to build Perl for OS/400 is to use the PASE
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| 16 | (Portable Application Solutions Environment), for more information see
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| 17 | http://www.iseries.ibm.com/developer/factory/pase/index.html
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| 18 | This environment allows one to use AIX APIs while programming, and it
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| 19 | provides a runtime that allows AIX binaries to execute directly on the
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| 20 | PowerPC iSeries.
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| 21 |
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| 22 | =head2 Compiling Perl for OS/400 PASE
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| 23 |
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| 24 | The recommended way to build Perl for the OS/400 PASE is to build the
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| 25 | Perl 5 source code (release 5.8.1 or later) under AIX.
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| 26 |
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| 27 | The trick is to give a special parameter to the Configure shell script
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| 28 | when running it on AIX:
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| 29 |
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| 30 | sh Configure -DPASE ...
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| 31 |
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| 32 | The default installation directory of Perl under PASE is /QOpenSys/perl.
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| 33 | This can be modified if needed with Configure parameter -Dprefix=/some/dir.
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| 34 |
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| 35 | Starting from OS/400 V5R2 the IBM Visual Age compiler is supported
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| 36 | on OS/400 PASE, so it is possible to build Perl natively on OS/400.
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| 37 | The easier way, however, is to compile in AIX, as just described.
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| 38 |
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| 39 | If you don't want to install the compiled Perl in AIX into /QOpenSys
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| 40 | (for packaging it before copying it to PASE), you can use a Configure
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| 41 | parameter: -Dinstallprefix=/tmp/QOpenSys/perl. This will cause the
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| 42 | "make install" to install everything into that directory, while the
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| 43 | installed files still think they are (will be) in /QOpenSys/perl.
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| 44 |
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| 45 | If building natively on PASE, please do the build under the /QOpenSys
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| 46 | directory, since Perl is happier when built on a case sensitive filesystem.
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| 47 |
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| 48 | =head2 Installing Perl in OS/400 PASE
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| 49 |
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| 50 | If you are compiling on AIX, simply do a "make install" on the AIX box.
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| 51 | Once the install finishes, tar up the /QOpenSys/perl directory. Transfer
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| 52 | the tarball to the OS/400 using FTP with the following commands:
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| 53 |
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| 54 | > binary
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| 55 | > site namefmt 1
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| 56 | > put perl.tar /QOpenSys
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| 57 |
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| 58 | Once you have it on, simply bring up a PASE shell and extract the tarball.
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| 59 |
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| 60 | If you are compiling in PASE, then "make install" is the only thing you
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| 61 | will need to do.
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| 62 |
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| 63 | The default path for perl binary is /QOpenSys/perl/bin/perl. You'll
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| 64 | want to symlink /QOpenSys/usr/bin/perl to this file so you don't have
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| 65 | to modify your path.
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| 66 |
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| 67 | =head2 Using Perl in OS/400 PASE
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| 68 |
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| 69 | Perl in PASE may be used in the same manner as you would use Perl on AIX.
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| 70 |
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| 71 | Scripts starting with #!/usr/bin/perl should work if you have
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| 72 | /QOpenSys/usr/bin/perl symlinked to your perl binary. This will not
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| 73 | work if you've done a setuid/setgid or have environment variable
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| 74 | PASE_EXEC_QOPENSYS="N". If you have V5R1, you'll need to get the
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| 75 | latest PTFs to have this feature. Scripts starting with
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| 76 | #!/QOpenSys/perl/bin/perl should always work.
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| 77 |
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| 78 | =head2 Known Problems
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| 79 |
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| 80 | When compiling in PASE, there is no "oslevel" command. Therefore,
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| 81 | you may want to create a script called "oslevel" that echoes the
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| 82 | level of AIX that your version of PASE runtime supports. If you're
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| 83 | unsure, consult your documentation or use "4.3.3.0".
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| 84 |
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| 85 | If you have test cases that fail, check for the existence of spool files.
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| 86 | The test case may be trying to use a syscall that is not implemented
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| 87 | in PASE. To avoid the SIGILL, try setting the PASE_SYSCALL_NOSIGILL
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| 88 | environment variable or have a handler for the SIGILL. If you can
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| 89 | compile programs for PASE, run the config script and edit config.sh
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| 90 | when it gives you the option. If you want to remove fchdir(), which
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| 91 | isn't implement in V5R1, simply change the line that says:
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| 92 |
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| 93 | d_fchdir='define'
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| 94 |
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| 95 | to
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| 96 |
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| 97 | d_fchdir='undef'
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| 98 |
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| 99 | and then compile Perl. The places where fchdir() is used have
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| 100 | alternatives for systems that do not have fchdir() available.
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| 101 |
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| 102 | =head2 Perl on ILE
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| 103 |
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| 104 | There exists a port of Perl to the ILE environment. This port, however,
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| 105 | is based quite an old release of Perl, Perl 5.00502 (August 1998).
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| 106 | (As of July 2002 the latest release of Perl is 5.8.0, and even 5.6.1
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| 107 | has been out since April 2001.) If you need to run Perl on ILE, though,
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| 108 | you may need this older port: http://www.cpan.org/ports/#os400
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| 109 | Note that any Perl release later than 5.00502 has not been ported to ILE.
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| 110 |
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| 111 | If you need to use Perl in the ILE environment, you may want to consider
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| 112 | using Qp2RunPase() to call the PASE version of Perl.
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| 113 |
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| 114 | =head1 AUTHORS
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| 115 |
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| 116 | Jarkko Hietaniemi <jhi@iki.fi>
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| 117 | Bryan Logan <bryanlog@us.ibm.com>
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| 118 | David Larson <larson1@us.ibm.com>
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| 119 |
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| 120 | =cut
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