Commit | Line | Data |
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9133bbab | 1 | This document is written in pod format hence there are punctuation |
92ad49c1 | 2 | characters in odd places. Do not worry, you have apparently got the |
a83b6f46 JH |
3 | ASCII->EBCDIC translation worked out correctly. You can read more |
4 | about pod in pod/perlpod.pod or the short summary in the INSTALL file. | |
9d116dd7 | 5 | |
8fde188e GS |
6 | =head1 NAME |
7 | ||
de2902a6 | 8 | perlos390 - building and installing Perl for OS/390 and z/OS |
8fde188e GS |
9 | |
10 | =head1 SYNOPSIS | |
11 | ||
12 | This document will help you Configure, build, test and install Perl | |
37a78d01 | 13 | on OS/390 (aka z/OS) Unix System Services. |
8fde188e | 14 | |
2b7f2baa | 15 | B<This document needs to be updated, but we don't know what it should say. |
8166b4e0 | 16 | Please submit comments to L<https://github.com/Perl/perl5/issues>.> |
2b7f2baa | 17 | |
8fde188e GS |
18 | =head1 DESCRIPTION |
19 | ||
9133bbab NIS |
20 | This is a fully ported Perl for OS/390 Version 2 Release 3, 5, 6, 7, |
21 | 8, and 9. It may work on other versions or releases, but those are | |
92ad49c1 | 22 | the ones we have tested it on. |
8fde188e | 23 | |
9133bbab NIS |
24 | You may need to carry out some system configuration tasks before |
25 | running the Configure script for Perl. | |
8fde188e | 26 | |
37a78d01 JH |
27 | |
28 | =head2 Tools | |
29 | ||
30 | The z/OS Unix Tools and Toys list may prove helpful and contains links | |
f110302f | 31 | to ports of much of the software helpful for building Perl. |
4b05bc8e | 32 | L<http://www.ibm.com/servers/eserver/zseries/zos/unix/bpxa1toy.html> |
37a78d01 JH |
33 | |
34 | ||
a83b6f46 | 35 | =head2 Unpacking Perl distribution on OS/390 |
9d116dd7 | 36 | |
0e7519cd JH |
37 | If using ftp remember to transfer the distribution in binary format. |
38 | ||
9d116dd7 JH |
39 | Gunzip/gzip for OS/390 is discussed at: |
40 | ||
08d7a6b2 | 41 | http://www.ibm.com/servers/eserver/zseries/zos/unix/bpxa1ty1.html |
9d116dd7 JH |
42 | |
43 | to extract an ASCII tar archive on OS/390, try this: | |
44 | ||
45 | pax -o to=IBM-1047,from=ISO8859-1 -r < latest.tar | |
46 | ||
bfd0ae40 JH |
47 | or |
48 | ||
49 | zcat latest.tar.Z | pax -o to=IBM-1047,from=ISO8859-1 -r | |
50 | ||
0e7519cd | 51 | If you get lots of errors of the form |
bbee22da | 52 | |
e46aa1dd | 53 | tar: FSUM7171 ...: cannot set uid/gid: EDC5139I Operation not permitted |
bbee22da | 54 | |
92ad49c1 | 55 | you did not read the above and tried to use tar instead of pax, you'll |
0e7519cd JH |
56 | first have to remove the (now corrupt) perl directory |
57 | ||
58 | rm -rf perl-... | |
59 | ||
60 | and then use pax. | |
bbee22da | 61 | |
a83b6f46 | 62 | =head2 Setup and utilities for Perl on OS/390 |
8fde188e GS |
63 | |
64 | Be sure that your yacc installation is in place including any necessary | |
65 | parser template files. If you have not already done so then be sure to: | |
66 | ||
67 | cp /samples/yyparse.c /etc | |
68 | ||
9133bbab | 69 | This may also be a good time to ensure that your /etc/protocol file |
8fde188e | 70 | and either your /etc/resolv.conf or /etc/hosts files are in place. |
eae55d03 PK |
71 | The IBM document that described such USS system setup issues was |
72 | SC28-1890-07 "OS/390 UNIX System Services Planning", in particular | |
73 | Chapter 6 on customizing the OE shell. | |
8fde188e | 74 | |
37a78d01 JH |
75 | GNU make for OS/390, which is recommended for the build of perl (as |
76 | well as building CPAN modules and extensions), is available from the | |
77 | L</Tools>. | |
9d116dd7 | 78 | |
9133bbab NIS |
79 | Some people have reported encountering "Out of memory!" errors while |
80 | trying to build Perl using GNU make binaries. If you encounter such | |
81 | trouble then try to download the source code kit and build GNU make | |
82 | from source to eliminate any such trouble. You might also find GNU make | |
83 | (as well as Perl and Apache) in the red-piece/book "Open Source Software | |
eae55d03 PK |
84 | for OS/390 UNIX", SG24-5944-00 from IBM. |
85 | ||
9133bbab NIS |
86 | If instead of the recommended GNU make you would like to use the system |
87 | supplied make program then be sure to install the default rules file | |
8dd596cc PP |
88 | properly via the shell command: |
89 | ||
90 | cp /samples/startup.mk /etc | |
91 | ||
92 | and be sure to also set the environment variable _C89_CCMODE=1 (exporting | |
93 | _C89_CCMODE=1 is also a good idea for users of GNU make). | |
94 | ||
f2766b05 | 95 | You might also want to have GNU groff for OS/390 installed before |
b432a672 | 96 | running the "make install" step for Perl. |
f2766b05 | 97 | |
eae55d03 PK |
98 | There is a syntax error in the /usr/include/sys/socket.h header file |
99 | that IBM supplies with USS V2R7, V2R8, and possibly V2R9. The problem with | |
100 | the header file is that near the definition of the SO_REUSEPORT constant | |
101 | there is a spurious extra '/' character outside of a comment like so: | |
102 | ||
103 | #define SO_REUSEPORT 0x0200 /* allow local address & port | |
104 | reuse */ / | |
105 | ||
9133bbab NIS |
106 | You could edit that header yourself to remove that last '/', or you might |
107 | note that Language Environment (LE) APAR PQ39997 describes the problem | |
eae55d03 | 108 | and PTF's UQ46272 and UQ46271 are the (R8 at least) fixes and apply them. |
9133bbab | 109 | If left unattended that syntax error will turn up as an inability for Perl |
eae55d03 PK |
110 | to build its "Socket" extension. |
111 | ||
9133bbab | 112 | For successful testing you may need to turn on the sticky bit for your |
eae55d03 PK |
113 | world readable /tmp directory if you have not already done so (see man chmod). |
114 | ||
a83b6f46 | 115 | =head2 Configure Perl on OS/390 |
8fde188e | 116 | |
92ad49c1 | 117 | Once you have unpacked the distribution, run "sh Configure" (see INSTALL |
9133bbab | 118 | for a full discussion of the Configure options). There is a "hints" file |
8fde188e GS |
119 | for os390 that specifies the correct values for most things. Some things |
120 | to watch out for include: | |
121 | ||
92ad49c1 | 122 | =head3 Shell |
8fde188e | 123 | |
eae55d03 PK |
124 | A message of the form: |
125 | ||
92ad49c1 MB |
126 | (I see you are using the Korn shell. Some ksh's blow up on Configure, |
127 | mainly on older exotic systems. If yours does, try the Bourne shell instead.) | |
eae55d03 PK |
128 | |
129 | is nothing to worry about at all. | |
130 | ||
92ad49c1 | 131 | =head3 Samples |
eae55d03 | 132 | |
8fde188e GS |
133 | Some of the parser default template files in /samples are needed in /etc. |
134 | In particular be sure that you at least copy /samples/yyparse.c to /etc | |
eae55d03 | 135 | before running Perl's Configure. This step ensures successful extraction |
c67aee7a | 136 | of EBCDIC versions of parser files such as perly.c and perly.h. |
9133bbab NIS |
137 | This has to be done before running Configure the first time. If you failed |
138 | to do so then the easiest way to re-Configure Perl is to delete your | |
139 | misconfigured build root and re-extract the source from the tar ball. | |
140 | Then you must ensure that /etc/yyparse.c is properly in place before | |
59c9e5d6 | 141 | attempting to re-run Configure. |
8fde188e | 142 | |
92ad49c1 MB |
143 | =head3 Dynamic loading |
144 | ||
145 | Dynamic loading is required if you want to use XS modules from CPAN (like | |
146 | DBI (and DBD's), JSON::XS, and Text::CSV_XS) or update CORE modules from | |
147 | CPAN with newer versions (like Encode) without rebuilding all of the perl | |
148 | binary. | |
8fde188e | 149 | |
f2766b05 PP |
150 | This port will support dynamic loading, but it is not selected by |
151 | default. If you would like to experiment with dynamic loading then | |
152 | be sure to specify -Dusedl in the arguments to the Configure script. | |
153 | See the comments in hints/os390.sh for more information on dynamic loading. | |
154 | If you build with dynamic loading then you will need to add the | |
155 | $archlibexp/CORE directory to your LIBPATH environment variable in order | |
156 | for perl to work. See the config.sh file for the value of $archlibexp. | |
59c9e5d6 PP |
157 | If in trying to use Perl you see an error message similar to: |
158 | ||
159 | CEE3501S The module libperl.dll was not found. | |
e46aa1dd KW |
160 | From entry point __dllstaticinit at compile unit offset +00000194 |
161 | at | |
59c9e5d6 | 162 | |
9133bbab | 163 | then your LIBPATH does not have the location of libperl.x and either |
59c9e5d6 PP |
164 | libperl.dll or libperl.so in it. Add that directory to your LIBPATH and |
165 | proceed. | |
8fde188e | 166 | |
92ad49c1 MB |
167 | In hints/os390.sh, selecting -Dusedl will default to *also* select |
168 | -Duseshrplib. Having a shared plib not only requires LIBPATH to be set to | |
169 | the correct location of libperl.so but also makes it close to impossible | |
170 | to run more than one different perl that was built this way at the same | |
171 | time. | |
172 | ||
173 | All objects that are involved in -Dusedl builds should be compiled for | |
174 | this, probably by adding to all ccflags | |
175 | ||
176 | -qexportall -qxplink -qdll -Wc,XPLINK,dll,EXPORTALL -Wl,XPLINK,dll | |
177 | ||
178 | =head3 Optimizing | |
9d116dd7 | 179 | |
eae55d03 | 180 | Do not turn on the compiler optimization flag "-O". There is |
8fde188e GS |
181 | a bug in either the optimizer or perl that causes perl to |
182 | not work correctly when the optimizer is on. | |
9d116dd7 | 183 | |
92ad49c1 | 184 | =head3 Config files |
9d116dd7 | 185 | |
8fde188e GS |
186 | Some of the configuration files in /etc used by the |
187 | networking APIs are either missing or have the wrong | |
188 | names. In particular, make sure that there's either | |
eae55d03 | 189 | an /etc/resolv.conf or an /etc/hosts, so that |
8fde188e GS |
190 | gethostbyname() works, and make sure that the file |
191 | /etc/proto has been renamed to /etc/protocol (NOT | |
192 | /etc/protocols, as used by other Unix systems). | |
59c9e5d6 | 193 | You may have to look for things like HOSTNAME and DOMAINORIGIN |
9133bbab | 194 | in the "//'SYS1.TCPPARMS(TCPDATA)'" PDS member in order to |
59c9e5d6 | 195 | properly set up your /etc networking files. |
9d116dd7 | 196 | |
a83b6f46 | 197 | =head2 Build, Test, Install Perl on OS/390 |
8fde188e GS |
198 | |
199 | Simply put: | |
200 | ||
201 | sh Configure | |
202 | make | |
203 | make test | |
204 | ||
eae55d03 | 205 | if everything looks ok (see the next section for test/IVP diagnosis) then: |
8fde188e GS |
206 | |
207 | make install | |
208 | ||
209 | this last step may or may not require UID=0 privileges depending | |
210 | on how you answered the questions that Configure asked and whether | |
211 | or not you have write access to the directories you specified. | |
212 | ||
a83b6f46 | 213 | =head2 Build Anomalies with Perl on OS/390 |
eae55d03 PK |
214 | |
215 | "Out of memory!" messages during the build of Perl are most often fixed | |
216 | by re building the GNU make utility for OS/390 from a source code kit. | |
217 | ||
92ad49c1 MB |
218 | Building debugging-enabled binaries (with -g or -g3) will increase the |
219 | chance of getting these errors. Prevent -g if possible. | |
220 | ||
eae55d03 PK |
221 | Another memory limiting item to check is your MAXASSIZE parameter in your |
222 | 'SYS1.PARMLIB(BPXPRMxx)' data set (note too that as of V2R8 address space | |
9133bbab | 223 | limits can be set on a per user ID basis in the USS segment of a RACF |
eae55d03 PK |
224 | profile). People have reported successful builds of Perl with MAXASSIZE |
225 | parameters as small as 503316480 (and it may be possible to build Perl | |
226 | with a MAXASSIZE smaller than that). | |
227 | ||
9133bbab | 228 | Within USS your /etc/profile or $HOME/.profile may limit your ulimit |
eae55d03 PK |
229 | settings. Check that the following command returns reasonable values: |
230 | ||
231 | ulimit -a | |
232 | ||
233 | To conserve memory you should have your compiler modules loaded into the | |
234 | Link Pack Area (LPA/ELPA) rather than in a link list or step lib. | |
235 | ||
236 | If the c89 compiler complains of syntax errors during the build of the | |
237 | Socket extension then be sure to fix the syntax error in the system | |
238 | header /usr/include/sys/socket.h. | |
239 | ||
a83b6f46 | 240 | =head2 Testing Anomalies with Perl on OS/390 |
eae55d03 | 241 | |
b432a672 | 242 | The "make test" step runs a Perl Verification Procedure, usually before |
eae55d03 | 243 | installation. You might encounter STDERR messages even during a successful |
b432a672 | 244 | run of "make test". Here is a guide to some of the more commonly seen |
eae55d03 PK |
245 | anomalies: |
246 | ||
92ad49c1 | 247 | =head3 Signals |
eae55d03 PK |
248 | |
249 | A message of the form: | |
250 | ||
eae55d03 PK |
251 | io/openpid...........CEE5210S The signal SIGHUP was received. |
252 | CEE5210S The signal SIGHUP was received. | |
253 | CEE5210S The signal SIGHUP was received. | |
254 | ok | |
255 | ||
256 | indicates that the t/io/openpid.t test of Perl has passed but done so | |
257 | with extraneous messages on stderr from CEE. | |
258 | ||
92ad49c1 | 259 | =head3 File::Temp |
eae55d03 PK |
260 | |
261 | A message of the form: | |
262 | ||
e46aa1dd KW |
263 | lib/ftmp-security....File::Temp::_gettemp: Parent directory (/tmp/) |
264 | is not safe (sticky bit not set when world writable?) at | |
265 | lib/ftmp-security.t line 100 | |
266 | File::Temp::_gettemp: Parent directory (/tmp/) is not safe (sticky | |
267 | bit not set when world writable?) at lib/ftmp-security.t line 100 | |
eae55d03 PK |
268 | ok |
269 | ||
270 | indicates a problem with the permissions on your /tmp directory within the HFS. | |
271 | To correct that problem issue the command: | |
272 | ||
92ad49c1 | 273 | chmod a+t /tmp |
eae55d03 PK |
274 | |
275 | from an account with write access to the directory entry for /tmp. | |
276 | ||
92ad49c1 | 277 | =head3 Out of Memory! |
9133bbab | 278 | |
f858446f | 279 | Recent perl test suite is quite memory hungry. In addition to the comments |
9133bbab NIS |
280 | above on memory limitations it is also worth checking for _CEE_RUNOPTS |
281 | in your environment. Perl now has (in miniperlmain.c) a C #pragma | |
210b36aa | 282 | to set CEE run options, but the environment variable wins. |
9133bbab | 283 | |
210b36aa | 284 | The C code asks for: |
9133bbab NIS |
285 | |
286 | #pragma runopts(HEAP(2M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON)) | |
287 | ||
288 | The important parts of that are the second argument (the increment) to HEAP, | |
289 | and allowing the stack to be "Above the (16M) line". If the heap | |
210b36aa AMS |
290 | increment is too small then when perl (for example loading unicode/Name.pl) tries |
291 | to create a "big" (400K+) string it cannot fit in a single segment | |
9133bbab NIS |
292 | and you get "Out of Memory!" - even if there is still plenty of memory |
293 | available. | |
294 | ||
295 | A related issue is use with perl's malloc. Perl's malloc uses C<sbrk()> | |
296 | to get memory, and C<sbrk()> is limited to the first allocation so in this | |
297 | case something like: | |
298 | ||
299 | HEAP(8M,500K,ANYWHERE,KEEP,8K,4K) | |
300 | ||
301 | is needed to get through the test suite. | |
302 | ||
a83b6f46 | 303 | =head2 Installation Anomalies with Perl on OS/390 |
f2766b05 PP |
304 | |
305 | The installman script will try to run on OS/390. There will be fewer errors | |
9133bbab | 306 | if you have a roff utility installed. You can obtain GNU groff from the |
f2766b05 PP |
307 | Redbook SG24-5944-00 ftp site. |
308 | ||
a83b6f46 | 309 | =head2 Usage Hints for Perl on OS/390 |
64d55c8a | 310 | |
9d116dd7 | 311 | When using perl on OS/390 please keep in mind that the EBCDIC and ASCII |
9133bbab NIS |
312 | character sets are different. See perlebcdic.pod for more on such character |
313 | set issues. Perl builtin functions that may behave differently under | |
eae55d03 | 314 | EBCDIC are also mentioned in the perlport.pod document. |
9d116dd7 | 315 | |
9133bbab NIS |
316 | Open Edition (UNIX System Services) from V2R8 onward does support |
317 | #!/path/to/perl script invocation. There is a PTF available from | |
eae55d03 | 318 | IBM for V2R7 that will allow shell/kernel support for #!. USS |
9133bbab | 319 | releases prior to V2R7 did not support the #! means of script invocation. |
eae55d03 | 320 | If you are running V2R6 or earlier then see: |
9d116dd7 JH |
321 | |
322 | head `whence perldoc` | |
323 | ||
324 | for an example of how to use the "eval exec" trick to ask the shell to | |
eae55d03 PK |
325 | have Perl run your scripts on those older releases of Unix System Services. |
326 | ||
59c9e5d6 | 327 | If you are having trouble with square brackets then consider switching your |
9133bbab | 328 | rlogin or telnet client. Try to avoid older 3270 emulators and ISHELL for |
59c9e5d6 PP |
329 | working with Perl on USS. |
330 | ||
a83b6f46 | 331 | =head2 Floating Point Anomalies with Perl on OS/390 |
35a77668 | 332 | |
9133bbab NIS |
333 | There appears to be a bug in the floating point implementation on S/390 |
334 | systems such that calling int() on the product of a number and a small | |
335 | magnitude number is not the same as calling int() on the quotient of | |
336 | that number and a large magnitude number. For example, in the following | |
35a77668 PP |
337 | Perl code: |
338 | ||
339 | my $x = 100000.0; | |
340 | my $y = int($x * 1e-5) * 1e5; # '0' | |
341 | my $z = int($x / 1e+5) * 1e5; # '100000' | |
342 | print "\$y is $y and \$z is $z\n"; # $y is 0 and $z is 100000 | |
343 | ||
9133bbab | 344 | Although one would expect the quantities $y and $z to be the same and equal |
35a77668 PP |
345 | to 100000 they will differ and instead will be 0 and 100000 respectively. |
346 | ||
347 | The problem can be further examined in a roughly equivalent C program: | |
348 | ||
349 | #include <stdio.h> | |
350 | #include <math.h> | |
351 | main() | |
352 | { | |
353 | double r1,r2; | |
354 | double x = 100000.0; | |
355 | double y = 0.0; | |
356 | double z = 0.0; | |
357 | x = 100000.0 * 1e-5; | |
358 | r1 = modf (x,&y); | |
359 | x = 100000.0 / 1e+5; | |
360 | r2 = modf (x,&z); | |
361 | printf("y is %e and z is %e\n",y*1e5,z*1e5); | |
362 | /* y is 0.000000e+00 and z is 1.000000e+05 (with c89) */ | |
363 | } | |
364 | ||
a83b6f46 | 365 | =head2 Modules and Extensions for Perl on OS/390 |
eae55d03 | 366 | |
393dcb6c | 367 | Pure Perl (that is non XS) modules may be installed via the usual: |
eae55d03 PK |
368 | |
369 | perl Makefile.PL | |
370 | make | |
371 | make test | |
372 | make install | |
373 | ||
f2766b05 | 374 | If you built perl with dynamic loading capability then that would also |
92ad49c1 MB |
375 | be the way to build XS based extensions. However, if you built perl with |
376 | the default static linking you can still build XS based extensions for OS/390 | |
9133bbab NIS |
377 | but you will need to follow the instructions in ExtUtils::MakeMaker for |
378 | building statically linked perl binaries. In the simplest configurations | |
92ad49c1 | 379 | building a static perl + XS extension boils down to: |
9d116dd7 | 380 | |
eae55d03 PK |
381 | perl Makefile.PL |
382 | make | |
383 | make perl | |
384 | make test | |
385 | make install | |
386 | make -f Makefile.aperl inst_perl MAP_TARGET=perl | |
8fde188e | 387 | |
9133bbab | 388 | In most cases people have reported better results with GNU make rather |
eae55d03 | 389 | than the system's /bin/make program, whether for plain modules or for |
92ad49c1 | 390 | XS based extensions. |
8fde188e | 391 | |
f2766b05 PP |
392 | If the make process encounters trouble with either compilation or |
393 | linking then try setting the _C89_CCMODE to 1. Assuming sh is your | |
394 | login shell then run: | |
395 | ||
396 | export _C89_CCMODE=1 | |
397 | ||
398 | If tcsh is your login shell then use the setenv command. | |
399 | ||
8fde188e GS |
400 | =head1 AUTHORS |
401 | ||
eae55d03 PK |
402 | David Fiander and Peter Prymmer with thanks to Dennis Longnecker |
403 | and William Raffloer for valuable reports, LPAR and PTF feedback. | |
404 | Thanks to Mike MacIsaac and Egon Terwedow for SG24-5944-00. | |
35a77668 | 405 | Thanks to Ignasi Roca for pointing out the floating point problems. |
f2766b05 | 406 | Thanks to John Goodyear for dynamic loading help. |
8fde188e GS |
407 | |
408 | =head1 SEE ALSO | |
409 | ||
eae55d03 PK |
410 | L<INSTALL>, L<perlport>, L<perlebcdic>, L<ExtUtils::MakeMaker>. |
411 | ||
e46aa1dd | 412 | http://www.ibm.com/servers/eserver/zseries/zos/unix/bpxa1toy.html |
eae55d03 | 413 | |
e46aa1dd | 414 | http://www.redbooks.ibm.com/redbooks/SG245944.html |
eae55d03 | 415 | |
e46aa1dd | 416 | http://www.ibm.com/servers/eserver/zseries/zos/unix/bpxa1ty1.html#opensrc |
eae55d03 | 417 | |
e46aa1dd | 418 | http://www.xray.mpe.mpg.de/mailing-lists/perl-mvs/ |
8fde188e | 419 | |
e46aa1dd | 420 | http://publibz.boulder.ibm.com:80/cgi-bin/bookmgr_OS390/BOOKS/ceea3030/ |
9133bbab | 421 | |
e46aa1dd | 422 | http://publibz.boulder.ibm.com:80/cgi-bin/bookmgr_OS390/BOOKS/CBCUG030/ |
9133bbab | 423 | |
a83b6f46 | 424 | =head2 Mailing list for Perl on OS/390 |
8fde188e | 425 | |
043fec90 | 426 | If you are interested in the z/OS (formerly known as OS/390) |
3f66d419 JH |
427 | and POSIX-BC (BS2000) ports of Perl then see the perl-mvs mailing list. |
428 | To subscribe, send an empty message to perl-mvs-subscribe@perl.org. | |
9d116dd7 | 429 | |
3f66d419 | 430 | See also: |
35a77668 | 431 | |
fdee78a1 | 432 | https://lists.perl.org/list/perl-mvs.html |
35a77668 PP |
433 | |
434 | There are web archives of the mailing list at: | |
eae55d03 | 435 | |
cba88c42 | 436 | https://www.nntp.perl.org/group/perl.mvs/ |
9d116dd7 | 437 | |
8fde188e GS |
438 | =head1 HISTORY |
439 | ||
440 | This document was originally written by David Fiander for the 5.005 | |
441 | release of Perl. | |
442 | ||
eae55d03 PK |
443 | This document was podified for the 5.005_03 release of Perl 11 March 1999. |
444 | ||
445 | Updated 12 November 2000 for the 5.7.1 release of Perl. | |
8fde188e | 446 | |
92ad49c1 MB |
447 | Updated 15 January 2001 for the 5.7.1 release of Perl. |
448 | ||
449 | Updated 24 January 2001 to mention dynamic loading. | |
35a77668 | 450 | |
92ad49c1 MB |
451 | Updated 12 March 2001 to mention //'SYS1.TCPPARMS(TCPDATA)'. |
452 | ||
453 | Updated 28 November 2001 for broken URLs. | |
f2766b05 | 454 | |
5dfe9680 | 455 | Updated 03 October 2019 for perl-5.33.1+ |
59c9e5d6 | 456 | |
8fde188e | 457 | =cut |
eae55d03 | 458 |