124 lines
4.7 KiB
Plaintext
124 lines
4.7 KiB
Plaintext
If you read this file _as_is_, just ignore the funny characters you see.
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It is written in the POD format (see pod/perlpod.pod) which is specially
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designed to be readable as is.
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=head1 NAME
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perlos400 - Perl version 5 on OS/400
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B<This document needs to be updated, but we don't know what it should say.
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Please email comments to L<perlbug@perl.org|mailto:perlbug@perl.org>.>
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=head1 DESCRIPTION
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This document describes various features of IBM's OS/400 operating
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system that will affect how Perl version 5 (hereafter just Perl) is
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compiled and/or runs.
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By far the easiest way to build Perl for OS/400 is to use the PASE
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(Portable Application Solutions Environment), for more information see
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L<http://www.iseries.ibm.com/developer/factory/pase/index.html>
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This environment allows one to use AIX APIs while programming, and it
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provides a runtime that allows AIX binaries to execute directly on the
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PowerPC iSeries.
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=head2 Compiling Perl for OS/400 PASE
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The recommended way to build Perl for the OS/400 PASE is to build the
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Perl 5 source code (release 5.8.1 or later) under AIX.
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The trick is to give a special parameter to the Configure shell script
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when running it on AIX:
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sh Configure -DPASE ...
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The default installation directory of Perl under PASE is /QOpenSys/perl.
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This can be modified if needed with Configure parameter -Dprefix=/some/dir.
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Starting from OS/400 V5R2 the IBM Visual Age compiler is supported
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on OS/400 PASE, so it is possible to build Perl natively on OS/400.
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The easier way, however, is to compile in AIX, as just described.
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If you don't want to install the compiled Perl in AIX into /QOpenSys
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(for packaging it before copying it to PASE), you can use a Configure
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parameter: -Dinstallprefix=/tmp/QOpenSys/perl. This will cause the
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"make install" to install everything into that directory, while the
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installed files still think they are (will be) in /QOpenSys/perl.
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If building natively on PASE, please do the build under the /QOpenSys
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directory, since Perl is happier when built on a case sensitive filesystem.
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=head2 Installing Perl in OS/400 PASE
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If you are compiling on AIX, simply do a "make install" on the AIX box.
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Once the install finishes, tar up the /QOpenSys/perl directory. Transfer
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the tarball to the OS/400 using FTP with the following commands:
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> binary
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> site namefmt 1
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> put perl.tar /QOpenSys
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Once you have it on, simply bring up a PASE shell and extract the tarball.
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If you are compiling in PASE, then "make install" is the only thing you
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will need to do.
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The default path for perl binary is /QOpenSys/perl/bin/perl. You'll
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want to symlink /QOpenSys/usr/bin/perl to this file so you don't have
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to modify your path.
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=head2 Using Perl in OS/400 PASE
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Perl in PASE may be used in the same manner as you would use Perl on AIX.
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Scripts starting with #!/usr/bin/perl should work if you have
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/QOpenSys/usr/bin/perl symlinked to your perl binary. This will not
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work if you've done a setuid/setgid or have environment variable
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PASE_EXEC_QOPENSYS="N". If you have V5R1, you'll need to get the
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latest PTFs to have this feature. Scripts starting with
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#!/QOpenSys/perl/bin/perl should always work.
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=head2 Known Problems
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When compiling in PASE, there is no "oslevel" command. Therefore,
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you may want to create a script called "oslevel" that echoes the
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level of AIX that your version of PASE runtime supports. If you're
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unsure, consult your documentation or use "4.3.3.0".
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If you have test cases that fail, check for the existence of spool files.
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The test case may be trying to use a syscall that is not implemented
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in PASE. To avoid the SIGILL, try setting the PASE_SYSCALL_NOSIGILL
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environment variable or have a handler for the SIGILL. If you can
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compile programs for PASE, run the config script and edit config.sh
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when it gives you the option. If you want to remove fchdir(), which
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isn't implement in V5R1, simply change the line that says:
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d_fchdir='define'
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to
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d_fchdir='undef'
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and then compile Perl. The places where fchdir() is used have
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alternatives for systems that do not have fchdir() available.
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=head2 Perl on ILE
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There exists a port of Perl to the ILE environment. This port, however,
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is based quite an old release of Perl, Perl 5.00502 (August 1998).
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(As of July 2002 the latest release of Perl is 5.8.0, and even 5.6.1
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has been out since April 2001.) If you need to run Perl on ILE, though,
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you may need this older port: L<http://www.cpan.org/ports/#os400>
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Note that any Perl release later than 5.00502 has not been ported to ILE.
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If you need to use Perl in the ILE environment, you may want to consider
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using Qp2RunPase() to call the PASE version of Perl.
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=head1 AUTHORS
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Jarkko Hietaniemi <jhi@iki.fi>
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Bryan Logan <bryanlog@us.ibm.com>
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David Larson <larson1@us.ibm.com>
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=cut
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