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.
7 README.aix - Perl version 5 on IBM Unix (AIX) systems
11 This document describes various features of IBM's Unix operating
12 system (AIX) that will affect how Perl version 5 (hereafter just Perl)
13 is compiled and/or runs.
15 =head2 Compiling Perl 5 on AIX
17 When compiling Perl, you must use an ANSI C compiler. AIX does not ship
18 an ANSI compliant C-compiler with AIX by default, but binary builds of
19 gcc for AIX are widely available.
21 At the moment of writing, AIX supports two different native C compilers,
22 for which you have to pay: B<xlc> and B<VAC>. If you decide to use either
23 of these two (which is quite a lot easier than using gcc), be sure to
24 upgrade to the latest available patch level. Currently:
27 vac.C 4.4.0.3 or 5.0.2.0
29 Perl can be compiled with either IBM's ANSI C compiler or with gcc.
30 The former is recommended, as not only can it compile Perl with no
31 difficulty, but also can take advantage of features listed later that
32 require the use of IBM compiler-specific command-line flags.
34 The IBM's compiler patch levels 5.0.0.0 and 5.0.1.0 have compiler
35 optimization bugs that affect compiling perl.c and regcomp.c,
36 respectively. If Perl's configuration detects those compiler patch
37 levels, optimization is turned off for the said source code files.
38 Upgrading to at least 5.0.2.0 is recommended.
40 If you decide to use gcc, make sure your installation is recent and
41 complete, and be sure to read the Perl README file for more gcc-specific
42 details. Please report any hoops you had to jump through to the development
47 Before installing the patches to the IBM C-compiler you need to know the
48 level of patching for the Operating System. IBM's command 'oslevel' will
49 show the base, but is not always complete:
53 # lslpp -l | grep 'bos.rte '
54 bos.rte 4.3.2.1 COMMITTED Base Operating System Runtime
55 bos.rte 4.3.2.0 COMMITTED Base Operating System Runtime
58 =head2 Building Dynamic Extensions on AIX
60 AIX supports dynamically loadable objects as well as shared libraries.
61 Shared libraries by convention end with the suffix .a, which is a bit
62 misleading, as an archive can contain static as well as dynamic members.
63 For perl dynamically loaded objects we use the .so suffix also used on
66 Note that starting from Perl 5.7.2 (and consequently 5.8.0) and AIX 4.3
67 or newer Perl uses the AIX native dynamic loading interface in the so
68 called runtime linking mode instead of the emulated interface that was
69 used in Perl releases 5.6.1 and earlier or, for AIX releases 4.2 and
70 earlier. This change does break backward compatibility with compiled
71 modules from earlier perl releases. The change was made to make Perl
72 more compliant with other applications like Apache/modperl which are
73 using the AIX native interface. This change also enables the use of C++
74 code with static constructors and destructors in perl extensions, which
75 was not possible using the emulated interface.
77 =head2 The IBM ANSI C Compiler
79 All defaults for Configure can be used.
81 If you've chosen to use vac 4, be sure to run 4.4.0.3. Older versions
82 will turn up nasty later on. For vac 5 be sure to run at least 5.0.1.0.
84 Here's a brief lead of how to upgrade the compiler to the latest
85 level. Of course this is subject to changes. You can only upgrade
86 versions from ftp-available updates if the first three digit groups
87 are the same (in where you can skip intermediate unlike the patches
88 in the developer snapshots of perl), or to one version up where the
89 `base' is available. In other words, the AIX compiler patches are
92 vac.C.4.4.0.1 => vac.C.4.4.0.3 is OK (vac.C.4.4.0.2 not needed)
93 xlC.C.3.1.3.3 => xlC.C.3.1.4.10 is NOT OK (xlC.C.3.1.4.0 is not available)
95 # ftp ftp.software.ibm.com
96 Connected to service.boulder.ibm.com.
98 Name (ftp.software.ibm.com:merijn): anonymous
99 331 Guest login ok, send your complete e-mail address as password.
101 ... accepted login stuff
102 ftp> cd /aix/fixes/v4/
103 ftp> dir other other.ll
104 output to local-file: other.ll? y
105 200 PORT command successful.
106 150 Opening ASCII mode data connection for /bin/ls.
107 226 Transfer complete.
109 output to local-file: xlc.ll? y
110 200 PORT command successful.
111 150 Opening ASCII mode data connection for /bin/ls.
112 226 Transfer complete.
116 -rw-rw-rw- 1 merijn system 1169432 Nov 2 17:29 other.ll
117 -rw-rw-rw- 1 merijn system 29170 Nov 2 17:29 xlc.ll
119 On AIX 4.2 using xlC, we continue:
121 # lslpp -l | fgrep 'xlC.C '
122 xlC.C 3.1.4.9 COMMITTED C for AIX Compiler
123 xlC.C 3.1.4.0 COMMITTED C for AIX Compiler
124 # grep 'xlC.C.3.1.4.*.bff' xlc.ll
125 -rw-r--r-- 1 45776101 1 6286336 Jul 22 1996 xlC.C.3.1.4.1.bff
126 -rw-rw-r-- 1 45776101 1 6173696 Aug 24 1998 xlC.C.3.1.4.10.bff
127 -rw-r--r-- 1 45776101 1 6319104 Aug 14 1996 xlC.C.3.1.4.2.bff
128 -rw-r--r-- 1 45776101 1 6316032 Oct 21 1996 xlC.C.3.1.4.3.bff
129 -rw-r--r-- 1 45776101 1 6315008 Dec 20 1996 xlC.C.3.1.4.4.bff
130 -rw-rw-r-- 1 45776101 1 6178816 Mar 28 1997 xlC.C.3.1.4.5.bff
131 -rw-rw-r-- 1 45776101 1 6188032 May 22 1997 xlC.C.3.1.4.6.bff
132 -rw-rw-r-- 1 45776101 1 6191104 Sep 5 1997 xlC.C.3.1.4.7.bff
133 -rw-rw-r-- 1 45776101 1 6185984 Jan 13 1998 xlC.C.3.1.4.8.bff
134 -rw-rw-r-- 1 45776101 1 6169600 May 27 1998 xlC.C.3.1.4.9.bff
135 # wget ftp://ftp.software.ibm.com/aix/fixes/v4/xlc/xlC.C.3.1.4.10.bff
138 On AIX 4.3 using vac, we continue:
140 # lslpp -l | fgrep 'vac.C '
141 vac.C 4.4.0.2 COMMITTED C for AIX Compiler
142 vac.C 4.4.0.0 COMMITTED C for AIX Compiler
143 # grep 'vac.C.4.4.0.*.bff' other.ll
144 -rw-rw-r-- 1 45776101 1 13466624 May 26 1999 vac.C.4.4.0.1.bff
145 -rw-rw-r-- 1 45776101 1 13473792 Aug 31 1999 vac.C.4.4.0.2.bff
146 -rw-rw-r-- 1 45776101 1 13480960 May 19 20:32 vac.C.4.4.0.3.bff
147 # wget ftp://ftp.software.ibm.com/aix/fixes/v4/other/vac.C.4.4.0.3.bff
150 Then execute the following command, and fill in its choices
152 # smit install_update
153 -> Install and Update from LATEST Available Software
154 * INPUT device / directory for software [ vac.C.4.4.0.3.bff ]
158 Follow the messages ... and you're done.
160 =head2 Using GNU's gcc for building perl
162 We're working on this using gcc-3.0 ... (any input highly appreciated)
164 =head2 Using Large Files with Perl
166 Should yield no problems.
170 Threads seem to work OK, though at the moment not all tests pass when
171 threads are used in combination with 64bit configurations.
175 If your AIX is installed with 64-bit support, you can expect 64bit
176 configurations to work. In combination with threads some tests might
179 =head2 AIX 4.2 and extensions using C++ with statics
181 In AIX 4.2 Perl extensions that use C++ functions that use statics
182 may have problems in that the statics are not getting initialized.
183 In newer AIX releases this has been solved by linking Perl with
184 the libC_r library, but unfortunately in AIX 4.2 the said library
185 has an obscure bug where the various functions related to time
186 (such as time() and gettimeofday()) return broken values, and
187 therefore in AIX 4.2 Perl is not linked against the libC_r.
191 H.Merijn Brand <h.m.brand@hccnet.nl>
193 Structure copied from README.hpux
197 Version 0.0.3: 12 Jul 2001