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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.aix - Perl version 5 on IBM Unix (AIX) systems | |
8 | ||
9 | =head1 DESCRIPTION | |
10 | ||
a318903f MB |
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. | |
20d11268 MB |
14 | |
15 | =head2 Compiling Perl 5 on AIX | |
16 | ||
c5252117 RT |
17 | For information on compilers on older versions of AIX, see L<Compiling |
18 | Perl 5 on older AIX versions up to 4.3.3>. | |
7fabfece RT |
19 | |
20 | When compiling Perl, you must use an ANSI C compiler. AIX does not ship | |
21 | an ANSI compliant C-compiler with AIX by default, but binary builds of | |
22 | gcc for AIX are widely available. | |
23 | ||
24 | =head2 Supported Compilers | |
25 | ||
26 | Currently all versions of IBM's "xlc", "xlc_r", "cc", "cc_r" or | |
c5252117 | 27 | "vac" ANSI/C compiler will work for building Perl if that compiler |
7fabfece RT |
28 | works on your system. |
29 | ||
c5252117 | 30 | If you plan to link Perl to any module that requires thread-support, |
e1051f11 | 31 | like DBD::Oracle, it is better to use the _r version of the compiler. |
c5252117 RT |
32 | This will not build a threaded Perl, but a thread-enabled Perl. See |
33 | also L<Threaded Perl> later on. | |
e1051f11 | 34 | |
7fabfece RT |
35 | As of writing (2008-11) only the IBM XL C for AIX or XL C/C++ for AIX |
36 | compiler is supported by IBM on AIX 5L/6.1. | |
37 | ||
38 | The following compiler versions are supported by IBM: | |
39 | ||
40 | XL C and XL C/C++ V7, V8, V9, V10 | |
41 | ||
42 | The XL C for AIX is integrated in the XL C/C++ for AIX compiler. | |
43 | ||
fe5460cc RT |
44 | If you choose XL C/C++ V9 you need APAR IZ35785 installed |
45 | otherwise the integrated SDBM_File do not compile correctly due | |
46 | to an optimization bug. You can circumvent this problem by | |
47 | adding -qipa to the optimization flags (-Doptimize='-O -qipa'). | |
48 | The PTF for APAR IZ35785 which solves this problem will be available | |
7fabfece RT |
49 | in 1Q 2009. IBM does provide an emergency fix for this problem. |
50 | ||
fe5460cc RT |
51 | Perl can be compiled with either IBM's ANSI C compiler or with gcc. |
52 | The former is recommended, as not only it can compile Perl with no | |
53 | difficulty, but also can take advantage of features listed later | |
7fabfece RT |
54 | that require the use of IBM compiler-specific command-line flags. |
55 | ||
fe5460cc RT |
56 | If you decide to use gcc, make sure your installation is recent and |
57 | complete, and be sure to read the Perl INSTALL file for more gcc-specific | |
58 | details. Please report any hoops you had to jump through to the | |
7fabfece RT |
59 | development team. |
60 | ||
fe5460cc RT |
61 | =head2 Perl 5.8.9 was successfully compiled and tested on: |
62 | ||
63 | AIX Level | Compiler Level | w th | w/o th | |
64 | --------------------------+-------------------------+------+------- | |
65 | 5.1 TL9 32 bit | XL C/C++ V7 | OK | OK | |
66 | 5.1 TL9 32 bit | gcc 3.2.2 | OK | OK | |
67 | 5.1 TL9 64 bit | XL C/C++ V7 | OK | OK | |
68 | 5.2 TL10 32 bit | XL C/C++ V8 | OK | OK | |
69 | 5.2 TL10 64 bit | XL C/C++ V8 | OK | OK | |
70 | 5.3 TL7 32 bit | XL C/C++ V9 + IZ35785 | OK | OK | |
71 | 5.3 TL7 32 bit | gcc 4.2.4 | OK | OK | |
72 | 5.3 TL7 64 bit | XL C/C++ V9 + IZ35785 | OK | OK | |
73 | 6.1 TL1 32 bit | XL C/C++ V10 | OK | OK | |
74 | 6.1 TL1 64 bit + IZ39077 | XL C/C++ V10 | OK | OK | |
75 | ||
76 | w th = with thread | |
77 | w/o th = without thread | |
78 | ||
79 | Successfully tested means that all make test runs with an result of 100% OK. | |
80 | All tests were conducted with -Duseshrplib set. | |
81 | ||
7fabfece RT |
82 | =head2 Building Dynamic Extensions on AIX |
83 | ||
fe5460cc RT |
84 | Starting from Perl 5.7.2 (and consequently 5.8.x / 5.10.x) and AIX 4.3 |
85 | or newer Perl uses the AIX native dynamic loading interface in the so | |
86 | called runtime linking mode instead of the emulated interface that was | |
87 | used in Perl releases 5.6.1 and earlier or, for AIX releases 4.2 and | |
88 | earlier. This change does break backward compatibility with compiled | |
89 | modules from earlier Perl releases. The change was made to make Perl | |
90 | more compliant with other applications like Apache/mod_perl which are | |
91 | using the AIX native interface. This change also enables the use of | |
92 | C++ code with static constructors and destructors in Perl extensions, | |
7fabfece RT |
93 | which was not possible using the emulated interface. |
94 | ||
95 | It is highly recommended to use the new interface. | |
96 | ||
97 | =head2 Using Large Files with Perl | |
98 | ||
99 | Should yield no problems. | |
100 | ||
101 | =head2 Threaded Perl | |
102 | ||
81189653 | 103 | Should yield no problems with AIX 5.1 / 5.2 / 5.3 and 6.1. |
7fabfece | 104 | |
81189653 RT |
105 | IBM uses the AIX system Perl (V5.6.0 on AIX 5.1 and V5.8.2 on |
106 | AIX 5.2 / 5.3 and 6.1) for some AIX | |
107 | system scripts. If you switch the links in /usr/bin from the | |
7fabfece RT |
108 | AIX system Perl (/usr/opt/perl5) to the newly build Perl then you |
109 | get the same features as with the IBM AIX system Perl if the | |
110 | threaded options are used. | |
111 | ||
c5252117 | 112 | The threaded Perl build works also on AIX 5.1 but the IBM Perl |
81189653 RT |
113 | build (Perl v5.6.0) is not threaded on AIX 5.1. |
114 | ||
7fabfece RT |
115 | =head2 64-bit Perl |
116 | ||
117 | If your AIX system is installed with 64-bit support, you can expect 64-bit | |
118 | configurations to work. If you want to use 64-bit Perl on AIX 6.1 | |
119 | you need a APAR for a libc.a bug which affects (n)dbm_XXX functions. | |
81189653 | 120 | The APAR number for this problem is IZ39077. |
7fabfece RT |
121 | |
122 | If you need more memory (larger data segment) for your Perl programs you | |
123 | can set: | |
124 | ||
125 | /etc/security/limits | |
126 | default: (or your user) | |
127 | data = -1 (default is 262144 * 512 byte) | |
128 | ||
129 | With the default setting the size is limited to 128MB. | |
130 | The -1 removes this limit. | |
131 | ||
e1051f11 | 132 | =head2 Recommended Options AIX 5.1/5.2/5.3 and 6.1 (threaded/32-bit) |
7fabfece RT |
133 | |
134 | With the following options you get a threaded Perl version which | |
135 | passes all make tests in threaded 32-bit mode, which is the default | |
c5252117 | 136 | configuration for the Perl builds that AIX ships with. |
7fabfece RT |
137 | |
138 | rm config.sh | |
139 | ./Configure \ | |
140 | -d \ | |
141 | -Dcc=cc_r \ | |
142 | -Duseshrplib \ | |
143 | -Dusethreads \ | |
144 | -Dprefix=/usr/opt/perl5_32 | |
145 | ||
fe5460cc | 146 | The -Dprefix option will install Perl in a directory parallel to the |
7fabfece RT |
147 | IBM AIX system Perl installation. |
148 | ||
149 | =head2 Recommended Options AIX 5.1/5.2/5.3 and 6.1 (32-bit) | |
150 | ||
fe5460cc | 151 | With the following options you get a Perl version which passes |
7fabfece RT |
152 | all make tests in 32-bit mode. |
153 | ||
154 | rm config.sh | |
155 | ./Configure \ | |
156 | -d \ | |
157 | -Dcc=cc_r \ | |
158 | -Duseshrplib \ | |
159 | -Dprefix=/usr/opt/perl5_32 | |
160 | ||
161 | The -Dprefix option will install Perl in a directory parallel to the | |
162 | IBM AIX system Perl installation. | |
163 | ||
e1051f11 | 164 | =head2 Recommended Options AIX 5.1/5.2/5.3 and 6.1 (threaded/64-bit) |
7fabfece RT |
165 | |
166 | With the following options you get a threaded Perl version which | |
167 | passes all make tests in 64-bit mode. | |
168 | ||
169 | export OBJECT_MODE=64 / setenv OBJECT_MODE 64 (depending on your shell) | |
170 | ||
171 | rm config.sh | |
172 | ./Configure \ | |
173 | -d \ | |
174 | -Dcc=cc_r \ | |
175 | -Duseshrplib \ | |
176 | -Dusethreads \ | |
177 | -Duse64bitall \ | |
178 | -Dprefix=/usr/opt/perl5_64 | |
179 | ||
180 | =head2 Recommended Options AIX 5.1/5.2/5.3 and 6.1(64-bit) | |
181 | ||
fe5460cc RT |
182 | With the following options you get a Perl version which passes all |
183 | make tests in 64-bit mode. | |
7fabfece RT |
184 | |
185 | export OBJECT_MODE=64 / setenv OBJECT_MODE 64 (depending on your shell) | |
fe5460cc | 186 | |
7fabfece RT |
187 | rm config.sh |
188 | ./Configure \ | |
189 | -d \ | |
190 | -Dcc=cc_r \ | |
191 | -Duseshrplib \ | |
192 | -Duse64bitall \ | |
193 | -Dprefix=/usr/opt/perl5_64 | |
194 | ||
fe5460cc | 195 | The -Dprefix option will install Perl in a directory parallel to the |
7fabfece RT |
196 | IBM AIX system Perl installation. |
197 | ||
fe5460cc RT |
198 | If you choose gcc to compile 64-bit Perl then you need to use the |
199 | following options: | |
200 | ||
201 | -Dcc='gcc -maix64' | |
202 | ||
203 | ||
204 | =head2 Compiling Perl 5 on older AIX versions up to 4.3.3 | |
205 | ||
206 | Due to the fact that AIX 4.3.3 reached end-of-service in December 31, | |
207 | 2003 this information is provided as is. The Perl versions prior to | |
208 | Perl 5.8.9 could be compiled on AIX up to 4.3.3 with the following | |
209 | settings (your mileage may vary): | |
7fabfece | 210 | |
d5d9880c | 211 | When compiling Perl, you must use an ANSI C compiler. AIX does not ship |
20d11268 MB |
212 | an ANSI compliant C-compiler with AIX by default, but binary builds of |
213 | gcc for AIX are widely available. | |
214 | ||
215 | At the moment of writing, AIX supports two different native C compilers, | |
4951a6f9 | 216 | for which you have to pay: B<xlC> and B<vac>. If you decide to use either |
20d11268 MB |
217 | of these two (which is quite a lot easier than using gcc), be sure to |
218 | upgrade to the latest available patch level. Currently: | |
219 | ||
c67773d0 MB |
220 | xlC.C 3.1.4.10 or 3.6.6.0 or 4.0.2.2 or 5.0.2.9 or 6.0.0.3 |
221 | vac.C 4.4.0.3 or 5.0.2.6 or 6.0.0.1 | |
222 | ||
223 | note that xlC has the OS version in the name as of version 4.0.2.0, so | |
224 | you will find xlC.C for AIX-5.0 as package | |
225 | ||
226 | xlC.aix50.rte 5.0.2.0 or 6.0.0.3 | |
227 | ||
66a1b24b | 228 | subversions are not the same "latest" on all OS versions. For example, |
c67773d0 | 229 | the latest xlC-5 on aix41 is 5.0.2.9, while on aix43, it is 5.0.2.7. |
20d11268 | 230 | |
a318903f MB |
231 | Perl can be compiled with either IBM's ANSI C compiler or with gcc. |
232 | The former is recommended, as not only can it compile Perl with no | |
20d11268 MB |
233 | difficulty, but also can take advantage of features listed later that |
234 | require the use of IBM compiler-specific command-line flags. | |
235 | ||
12f54d27 JH |
236 | The IBM's compiler patch levels 5.0.0.0 and 5.0.1.0 have compiler |
237 | optimization bugs that affect compiling perl.c and regcomp.c, | |
238 | respectively. If Perl's configuration detects those compiler patch | |
239 | levels, optimization is turned off for the said source code files. | |
240 | Upgrading to at least 5.0.2.0 is recommended. | |
241 | ||
20d11268 | 242 | If you decide to use gcc, make sure your installation is recent and |
eed1f4d3 | 243 | complete, and be sure to read the Perl INSTALL file for more gcc-specific |
60ecc970 MB |
244 | details. Please report any hoops you had to jump through to the development |
245 | team. | |
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246 | |
247 | =head2 OS level | |
248 | ||
249 | Before installing the patches to the IBM C-compiler you need to know the | |
250 | level of patching for the Operating System. IBM's command 'oslevel' will | |
64cb7701 MB |
251 | show the base, but is not always complete (in this example oslevel shows |
252 | 4.3.NULL, whereas the system might run most of 4.3.THREE): | |
1a3e4d88 | 253 | |
20d11268 MB |
254 | # oslevel |
255 | 4.3.0.0 | |
256 | # lslpp -l | grep 'bos.rte ' | |
e41d30bc MB |
257 | bos.rte 4.3.3.75 COMMITTED Base Operating System Runtime |
258 | bos.rte 4.3.2.0 COMMITTED Base Operating System Runtime | |
259 | # | |
260 | ||
c5252117 | 261 | The same might happen to AIX 5.1 or other OS levels. As a side note, Perl |
64cb7701 | 262 | cannot be built without bos.adt.syscalls and bos.adt.libm installed |
1a3e4d88 JP |
263 | |
264 | # lslpp -l | egrep "syscalls|libm" | |
265 | bos.adt.libm 5.1.0.25 COMMITTED Base Application Development | |
c67773d0 | 266 | bos.adt.syscalls 5.1.0.36 COMMITTED System Calls Application |
64cb7701 | 267 | # |
20d11268 MB |
268 | |
269 | =head2 Building Dynamic Extensions on AIX | |
270 | ||
8218ea5d JH |
271 | AIX supports dynamically loadable objects as well as shared libraries. |
272 | Shared libraries by convention end with the suffix .a, which is a bit | |
273 | misleading, as an archive can contain static as well as dynamic members. | |
c5252117 | 274 | For Perl dynamically loaded objects we use the .so suffix also used on |
8218ea5d JH |
275 | many other platforms. |
276 | ||
277 | Note that starting from Perl 5.7.2 (and consequently 5.8.0) and AIX 4.3 | |
278 | or newer Perl uses the AIX native dynamic loading interface in the so | |
279 | called runtime linking mode instead of the emulated interface that was | |
280 | used in Perl releases 5.6.1 and earlier or, for AIX releases 4.2 and | |
281 | earlier. This change does break backward compatibility with compiled | |
c5252117 | 282 | modules from earlier Perl releases. The change was made to make Perl |
efc3b6b5 | 283 | more compliant with other applications like Apache/mod_perl which are |
8218ea5d | 284 | using the AIX native interface. This change also enables the use of C++ |
c5252117 | 285 | code with static constructors and destructors in Perl extensions, which |
8218ea5d | 286 | was not possible using the emulated interface. |
12f54d27 | 287 | |
20d11268 MB |
288 | =head2 The IBM ANSI C Compiler |
289 | ||
290 | All defaults for Configure can be used. | |
291 | ||
292 | If you've chosen to use vac 4, be sure to run 4.4.0.3. Older versions | |
4951a6f9 | 293 | will turn up nasty later on. For vac 5 be sure to run at least 5.0.1.0, |
c67773d0 MB |
294 | but vac 5.0.2.6 or up is highly recommended. Note that since IBM has |
295 | removed vac 5.0.2.1 through 5.0.2.5 from the software depot, these | |
296 | versions should be considered obsolete. | |
20d11268 | 297 | |
a318903f MB |
298 | Here's a brief lead of how to upgrade the compiler to the latest |
299 | level. Of course this is subject to changes. You can only upgrade | |
300 | versions from ftp-available updates if the first three digit groups | |
301 | are the same (in where you can skip intermediate unlike the patches | |
c5252117 | 302 | in the developer snapshots of Perl), or to one version up where the |
66a1b24b | 303 | "base" is available. In other words, the AIX compiler patches are |
a318903f MB |
304 | cumulative. |
305 | ||
306 | vac.C.4.4.0.1 => vac.C.4.4.0.3 is OK (vac.C.4.4.0.2 not needed) | |
307 | xlC.C.3.1.3.3 => xlC.C.3.1.4.10 is NOT OK (xlC.C.3.1.4.0 is not available) | |
308 | ||
309 | # ftp ftp.software.ibm.com | |
310 | Connected to service.boulder.ibm.com. | |
311 | : welcome message ... | |
312 | Name (ftp.software.ibm.com:merijn): anonymous | |
313 | 331 Guest login ok, send your complete e-mail address as password. | |
314 | Password: | |
315 | ... accepted login stuff | |
316 | ftp> cd /aix/fixes/v4/ | |
317 | ftp> dir other other.ll | |
318 | output to local-file: other.ll? y | |
319 | 200 PORT command successful. | |
320 | 150 Opening ASCII mode data connection for /bin/ls. | |
321 | 226 Transfer complete. | |
322 | ftp> dir xlc xlc.ll | |
323 | output to local-file: xlc.ll? y | |
324 | 200 PORT command successful. | |
325 | 150 Opening ASCII mode data connection for /bin/ls. | |
326 | 226 Transfer complete. | |
327 | ftp> bye | |
328 | ... goodbye messages | |
329 | # ls -l *.ll | |
330 | -rw-rw-rw- 1 merijn system 1169432 Nov 2 17:29 other.ll | |
331 | -rw-rw-rw- 1 merijn system 29170 Nov 2 17:29 xlc.ll | |
332 | ||
333 | On AIX 4.2 using xlC, we continue: | |
334 | ||
335 | # lslpp -l | fgrep 'xlC.C ' | |
336 | xlC.C 3.1.4.9 COMMITTED C for AIX Compiler | |
337 | xlC.C 3.1.4.0 COMMITTED C for AIX Compiler | |
338 | # grep 'xlC.C.3.1.4.*.bff' xlc.ll | |
339 | -rw-r--r-- 1 45776101 1 6286336 Jul 22 1996 xlC.C.3.1.4.1.bff | |
340 | -rw-rw-r-- 1 45776101 1 6173696 Aug 24 1998 xlC.C.3.1.4.10.bff | |
341 | -rw-r--r-- 1 45776101 1 6319104 Aug 14 1996 xlC.C.3.1.4.2.bff | |
342 | -rw-r--r-- 1 45776101 1 6316032 Oct 21 1996 xlC.C.3.1.4.3.bff | |
343 | -rw-r--r-- 1 45776101 1 6315008 Dec 20 1996 xlC.C.3.1.4.4.bff | |
344 | -rw-rw-r-- 1 45776101 1 6178816 Mar 28 1997 xlC.C.3.1.4.5.bff | |
345 | -rw-rw-r-- 1 45776101 1 6188032 May 22 1997 xlC.C.3.1.4.6.bff | |
346 | -rw-rw-r-- 1 45776101 1 6191104 Sep 5 1997 xlC.C.3.1.4.7.bff | |
347 | -rw-rw-r-- 1 45776101 1 6185984 Jan 13 1998 xlC.C.3.1.4.8.bff | |
348 | -rw-rw-r-- 1 45776101 1 6169600 May 27 1998 xlC.C.3.1.4.9.bff | |
349 | # wget ftp://ftp.software.ibm.com/aix/fixes/v4/xlc/xlC.C.3.1.4.10.bff | |
350 | # | |
351 | ||
352 | On AIX 4.3 using vac, we continue: | |
353 | ||
64cb7701 MB |
354 | # lslpp -l | grep 'vac.C ' |
355 | vac.C 5.0.2.2 COMMITTED C for AIX Compiler | |
356 | vac.C 5.0.2.0 COMMITTED C for AIX Compiler | |
357 | # grep 'vac.C.5.0.2.*.bff' other.ll | |
358 | -rw-rw-r-- 1 45776101 1 13592576 Apr 16 2001 vac.C.5.0.2.0.bff | |
359 | -rw-rw-r-- 1 45776101 1 14133248 Apr 9 2002 vac.C.5.0.2.3.bff | |
360 | -rw-rw-r-- 1 45776101 1 14173184 May 20 2002 vac.C.5.0.2.4.bff | |
c67773d0 MB |
361 | -rw-rw-r-- 1 45776101 1 14192640 Nov 22 2002 vac.C.5.0.2.6.bff |
362 | # wget ftp://ftp.software.ibm.com/aix/fixes/v4/other/vac.C.5.0.2.6.bff | |
a318903f MB |
363 | # |
364 | ||
64cb7701 MB |
365 | Likewise on all other OS levels. Then execute the following command, and |
366 | fill in its choices | |
a318903f MB |
367 | |
368 | # smit install_update | |
369 | -> Install and Update from LATEST Available Software | |
c67773d0 | 370 | * INPUT device / directory for software [ vac.C.5.0.2.6.bff ] |
a318903f MB |
371 | [ OK ] |
372 | [ OK ] | |
373 | ||
374 | Follow the messages ... and you're done. | |
375 | ||
8381f7b7 MB |
376 | If you like a more web-like approach, a good start point can be |
377 | http://www14.software.ibm.com/webapp/download/downloadaz.jsp and click | |
378 | "C for AIX", and follow the instructions. | |
379 | ||
e083a1cd JAE |
380 | =head2 The usenm option |
381 | ||
382 | If linking miniperl | |
383 | ||
384 | cc -o miniperl ... miniperlmain.o opmini.o perl.o ... -lm -lc ... | |
385 | ||
386 | causes error like this | |
387 | ||
388 | ld: 0711-317 ERROR: Undefined symbol: .aintl | |
389 | ld: 0711-317 ERROR: Undefined symbol: .copysignl | |
390 | ld: 0711-317 ERROR: Undefined symbol: .syscall | |
391 | ld: 0711-317 ERROR: Undefined symbol: .eaccess | |
392 | ld: 0711-317 ERROR: Undefined symbol: .setresuid | |
393 | ld: 0711-317 ERROR: Undefined symbol: .setresgid | |
394 | ld: 0711-317 ERROR: Undefined symbol: .setproctitle | |
395 | ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information. | |
396 | ||
397 | you could retry with | |
398 | ||
399 | make realclean | |
400 | rm config.sh | |
401 | ./Configure -Dusenm ... | |
402 | ||
403 | which makes Configure to use the C<nm> tool when scanning for library | |
404 | symbols, which usually is not done in AIX. | |
405 | ||
dd993642 JH |
406 | Related to this, you probably should not use the C<-r> option of |
407 | Configure in AIX, because that affects of how the C<nm> tool is used. | |
408 | ||
c5252117 | 409 | =head2 Using GNU's gcc for building Perl |
20d11268 | 410 | |
c67773d0 MB |
411 | Using gcc-3.x (tested with 3.0.4, 3.1, and 3.2) now works out of the box, |
412 | as do recent gcc-2.9 builds available directly from IBM as part of their | |
413 | Linux compatibility packages, available here: | |
818c4caa | 414 | |
4238f5a6 | 415 | http://www.ibm.com/servers/aix/products/aixos/linux/ |
20d11268 | 416 | |
20d11268 MB |
417 | =head2 Using Large Files with Perl |
418 | ||
60ecc970 | 419 | Should yield no problems. |
20d11268 MB |
420 | |
421 | =head2 Threaded Perl | |
422 | ||
60ecc970 | 423 | Threads seem to work OK, though at the moment not all tests pass when |
1d69df2b | 424 | threads are used in combination with 64-bit configurations. |
20d11268 | 425 | |
bef58541 JH |
426 | You may get a warning when doing a threaded build: |
427 | ||
428 | "pp_sys.c", line 4640.39: 1506-280 (W) Function argument assignment between types "unsigned char*" and "const void*" is not allowed. | |
429 | ||
430 | The exact line number may vary, but if the warning (W) comes from a line | |
431 | line this | |
432 | ||
433 | hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype); | |
434 | ||
435 | in the "pp_ghostent" function, you may ignore it safely. The warning | |
436 | is caused by the reentrant variant of gethostbyaddr() having a slightly | |
437 | different prototype than its non-reentrant variant, but the difference | |
438 | is not really significant here. | |
439 | ||
20d11268 MB |
440 | =head2 64-bit Perl |
441 | ||
1d69df2b | 442 | If your AIX is installed with 64-bit support, you can expect 64-bit |
12f54d27 JH |
443 | configurations to work. In combination with threads some tests might |
444 | still fail. | |
20d11268 | 445 | |
12f54d27 | 446 | =head2 AIX 4.2 and extensions using C++ with statics |
20d11268 | 447 | |
12f54d27 JH |
448 | In AIX 4.2 Perl extensions that use C++ functions that use statics |
449 | may have problems in that the statics are not getting initialized. | |
450 | In newer AIX releases this has been solved by linking Perl with | |
451 | the libC_r library, but unfortunately in AIX 4.2 the said library | |
452 | has an obscure bug where the various functions related to time | |
453 | (such as time() and gettimeofday()) return broken values, and | |
454 | therefore in AIX 4.2 Perl is not linked against the libC_r. | |
20d11268 | 455 | |
7fabfece | 456 | =head1 AUTHORS |
20d11268 | 457 | |
3bd76f0a | 458 | H.Merijn Brand <h.m.brand@xs4all.nl> |
7fabfece | 459 | Rainer Tammer <tammer@tammer.net> |
20d11268 | 460 | |
20d11268 MB |
461 | =head1 DATE |
462 | ||
e1051f11 | 463 | Version 0.0.8: 01 Dec 2008 |
20d11268 MB |
464 | |
465 | =cut |