Commit | Line | Data |
---|---|---|
920dae64 AT |
1 | If you read this file _as_is_, just ignore the funny characters you see. |
2 | It is written in the POD format (see pod/perlpod.pod) which is specially | |
3 | designed to be readable as is. | |
4 | ||
5 | =head1 NAME | |
6 | ||
7 | README.os400 - Perl version 5 on OS/400 | |
8 | ||
9 | =head1 DESCRIPTION | |
10 | ||
11 | This document describes various features of IBM's OS/400 operating | |
12 | system that will affect how Perl version 5 (hereafter just Perl) is | |
13 | compiled and/or runs. | |
14 | ||
15 | By far the easiest way to build Perl for OS/400 is to use the PASE | |
16 | (Portable Application Solutions Environment), for more information see | |
17 | http://www.iseries.ibm.com/developer/factory/pase/index.html | |
18 | This environment allows one to use AIX APIs while programming, and it | |
19 | provides a runtime that allows AIX binaries to execute directly on the | |
20 | PowerPC iSeries. | |
21 | ||
22 | =head2 Compiling Perl for OS/400 PASE | |
23 | ||
24 | The recommended way to build Perl for the OS/400 PASE is to build the | |
25 | Perl 5 source code (release 5.8.1 or later) under AIX. | |
26 | ||
27 | The trick is to give a special parameter to the Configure shell script | |
28 | when running it on AIX: | |
29 | ||
30 | sh Configure -DPASE ... | |
31 | ||
32 | The default installation directory of Perl under PASE is /QOpenSys/perl. | |
33 | This can be modified if needed with Configure parameter -Dprefix=/some/dir. | |
34 | ||
35 | Starting from OS/400 V5R2 the IBM Visual Age compiler is supported | |
36 | on OS/400 PASE, so it is possible to build Perl natively on OS/400. | |
37 | The easier way, however, is to compile in AIX, as just described. | |
38 | ||
39 | If you don't want to install the compiled Perl in AIX into /QOpenSys | |
40 | (for packaging it before copying it to PASE), you can use a Configure | |
41 | parameter: -Dinstallprefix=/tmp/QOpenSys/perl. This will cause the | |
42 | "make install" to install everything into that directory, while the | |
43 | installed files still think they are (will be) in /QOpenSys/perl. | |
44 | ||
45 | If building natively on PASE, please do the build under the /QOpenSys | |
46 | directory, since Perl is happier when built on a case sensitive filesystem. | |
47 | ||
48 | =head2 Installing Perl in OS/400 PASE | |
49 | ||
50 | If you are compiling on AIX, simply do a "make install" on the AIX box. | |
51 | Once the install finishes, tar up the /QOpenSys/perl directory. Transfer | |
52 | the tarball to the OS/400 using FTP with the following commands: | |
53 | ||
54 | > binary | |
55 | > site namefmt 1 | |
56 | > put perl.tar /QOpenSys | |
57 | ||
58 | Once you have it on, simply bring up a PASE shell and extract the tarball. | |
59 | ||
60 | If you are compiling in PASE, then "make install" is the only thing you | |
61 | will need to do. | |
62 | ||
63 | The default path for perl binary is /QOpenSys/perl/bin/perl. You'll | |
64 | want to symlink /QOpenSys/usr/bin/perl to this file so you don't have | |
65 | to modify your path. | |
66 | ||
67 | =head2 Using Perl in OS/400 PASE | |
68 | ||
69 | Perl in PASE may be used in the same manner as you would use Perl on AIX. | |
70 | ||
71 | Scripts starting with #!/usr/bin/perl should work if you have | |
72 | /QOpenSys/usr/bin/perl symlinked to your perl binary. This will not | |
73 | work if you've done a setuid/setgid or have environment variable | |
74 | PASE_EXEC_QOPENSYS="N". If you have V5R1, you'll need to get the | |
75 | latest PTFs to have this feature. Scripts starting with | |
76 | #!/QOpenSys/perl/bin/perl should always work. | |
77 | ||
78 | =head2 Known Problems | |
79 | ||
80 | When compiling in PASE, there is no "oslevel" command. Therefore, | |
81 | you may want to create a script called "oslevel" that echoes the | |
82 | level of AIX that your version of PASE runtime supports. If you're | |
83 | unsure, consult your documentation or use "4.3.3.0". | |
84 | ||
85 | If you have test cases that fail, check for the existence of spool files. | |
86 | The test case may be trying to use a syscall that is not implemented | |
87 | in PASE. To avoid the SIGILL, try setting the PASE_SYSCALL_NOSIGILL | |
88 | environment variable or have a handler for the SIGILL. If you can | |
89 | compile programs for PASE, run the config script and edit config.sh | |
90 | when it gives you the option. If you want to remove fchdir(), which | |
91 | isn't implement in V5R1, simply change the line that says: | |
92 | ||
93 | d_fchdir='define' | |
94 | ||
95 | to | |
96 | ||
97 | d_fchdir='undef' | |
98 | ||
99 | and then compile Perl. The places where fchdir() is used have | |
100 | alternatives for systems that do not have fchdir() available. | |
101 | ||
102 | =head2 Perl on ILE | |
103 | ||
104 | There exists a port of Perl to the ILE environment. This port, however, | |
105 | is based quite an old release of Perl, Perl 5.00502 (August 1998). | |
106 | (As of July 2002 the latest release of Perl is 5.8.0, and even 5.6.1 | |
107 | has been out since April 2001.) If you need to run Perl on ILE, though, | |
108 | you may need this older port: http://www.cpan.org/ports/#os400 | |
109 | Note that any Perl release later than 5.00502 has not been ported to ILE. | |
110 | ||
111 | If you need to use Perl in the ILE environment, you may want to consider | |
112 | using Qp2RunPase() to call the PASE version of Perl. | |
113 | ||
114 | =head1 AUTHORS | |
115 | ||
116 | Jarkko Hietaniemi <jhi@iki.fi> | |
117 | Bryan Logan <bryanlog@us.ibm.com> | |
118 | David Larson <larson1@us.ibm.com> | |
119 | ||
120 | =cut |