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| 129 | .\" ======================================================================== |
| 130 | .\" |
| 131 | .IX Title "PERLBS2000 1" |
| 132 | .TH PERLBS2000 1 "2006-01-07" "perl v5.8.8" "Perl Programmers Reference Guide" |
| 133 | .SH "NAME" |
| 134 | README.BS2000 \- building and installing Perl for BS2000. |
| 135 | .SH "SYNOPSIS" |
| 136 | .IX Header "SYNOPSIS" |
| 137 | This document will help you Configure, build, test and install Perl |
| 138 | on \s-1BS2000\s0 in the \s-1POSIX\s0 subsystem. |
| 139 | .SH "DESCRIPTION" |
| 140 | .IX Header "DESCRIPTION" |
| 141 | This is a ported perl for the \s-1POSIX\s0 subsystem in \s-1BS2000\s0 \s-1VERSION\s0 \s-1OSD\s0 |
| 142 | V3.1A or later. It may work on other versions, but we started porting |
| 143 | and testing it with 3.1A and are currently using Version V4.0A. |
| 144 | .PP |
| 145 | You may need the following \s-1GNU\s0 programs in order to install perl: |
| 146 | .Sh "gzip on \s-1BS2000\s0" |
| 147 | .IX Subsection "gzip on BS2000" |
| 148 | We used version 1.2.4, which could be installed out of the box with |
| 149 | one failure during 'make check'. |
| 150 | .Sh "bison on \s-1BS2000\s0" |
| 151 | .IX Subsection "bison on BS2000" |
| 152 | The yacc coming with \s-1BS2000\s0 \s-1POSIX\s0 didn't work for us. So we had to |
| 153 | use bison. We had to make a few changes to perl in order to use the |
| 154 | pure (reentrant) parser of bison. We used version 1.25, but we had to |
| 155 | add a few changes due to \s-1EBCDIC\s0. See below for more details |
| 156 | concerning yacc. |
| 157 | .Sh "Unpacking Perl Distribution on \s-1BS2000\s0" |
| 158 | .IX Subsection "Unpacking Perl Distribution on BS2000" |
| 159 | To extract an \s-1ASCII\s0 tar archive on \s-1BS2000\s0 \s-1POSIX\s0 you need an \s-1ASCII\s0 |
| 160 | filesystem (we used the mountpoint /usr/local/ascii for this). Now |
| 161 | you extract the archive in the \s-1ASCII\s0 filesystem without |
| 162 | I/O\-conversion: |
| 163 | .PP |
| 164 | cd /usr/local/ascii |
| 165 | export IO_CONVERSION=NO |
| 166 | gunzip < /usr/local/src/perl.tar.gz | pax \-r |
| 167 | .PP |
| 168 | You may ignore the error message for the first element of the archive |
| 169 | (this doesn't look like a tar archive / skipping to next file...), |
| 170 | it's only the directory which will be created automatically anyway. |
| 171 | .PP |
| 172 | After extracting the archive you copy the whole directory tree to your |
| 173 | \&\s-1EBCDIC\s0 filesystem. \fBThis time you use I/O\-conversion\fR: |
| 174 | .PP |
| 175 | cd /usr/local/src |
| 176 | IO_CONVERSION=YES |
| 177 | cp \-r /usr/local/ascii/perl5.005_02 ./ |
| 178 | .Sh "Compiling Perl on \s-1BS2000\s0" |
| 179 | .IX Subsection "Compiling Perl on BS2000" |
| 180 | There is a \*(L"hints\*(R" file for \s-1BS2000\s0 called hints.posix\-bc (because |
| 181 | posix-bc is the \s-1OS\s0 name given by `uname`) that specifies the correct |
| 182 | values for most things. The major problem is (of course) the \s-1EBCDIC\s0 |
| 183 | character set. We have german \s-1EBCDIC\s0 version. |
| 184 | .PP |
| 185 | Because of our problems with the native yacc we used \s-1GNU\s0 bison to |
| 186 | generate a pure (=reentrant) parser for perly.y. So our yacc is |
| 187 | really the following script: |
| 188 | .PP |
| 189 | \&\-\-\-\-\-8<\-\-\-\-\-/usr/local/bin/yacc\-\-\-\-\-8<\-\-\-\-\- |
| 190 | #! /usr/bin/sh |
| 191 | .PP |
| 192 | # Bison as a reentrant yacc: |
| 193 | .PP |
| 194 | # save parameters: |
| 195 | params="\*(L" |
| 196 | while [[ $# \-gt 1 ]]; do |
| 197 | params=\*(R"$params \f(CW$1\fR" |
| 198 | shift |
| 199 | done |
| 200 | .PP |
| 201 | # add flag \f(CW%pure_parser:\fR |
| 202 | .PP |
| 203 | tmpfile=/tmp/bison.$$.y |
| 204 | echo \f(CW%pure_parser\fR > \f(CW$tmpfile\fR |
| 205 | cat \f(CW$1\fR >> \f(CW$tmpfile\fR |
| 206 | .PP |
| 207 | # call bison: |
| 208 | .PP |
| 209 | echo \*(L"/usr/local/bin/bison \-\-yacc \f(CW$params\fR \f(CW$1\fR\et\et\et(Pure Parser)\*(R" |
| 210 | /usr/local/bin/bison \-\-yacc \f(CW$params\fR \f(CW$tmpfile\fR |
| 211 | .PP |
| 212 | # cleanup: |
| 213 | .PP |
| 214 | rm \-f \f(CW$tmpfile\fR |
| 215 | \&\-\-\-\-\-8<\-\-\-\-\-\-\-\-\-\-8<\-\-\-\-\- |
| 216 | .PP |
| 217 | We still use the normal yacc for a2p.y though!!! We made a softlink |
| 218 | called byacc to distinguish between the two versions: |
| 219 | .PP |
| 220 | ln \-s /usr/bin/yacc /usr/local/bin/byacc |
| 221 | .PP |
| 222 | We build perl using \s-1GNU\s0 make. We tried the native make once and it |
| 223 | worked too. |
| 224 | .Sh "Testing Perl on \s-1BS2000\s0" |
| 225 | .IX Subsection "Testing Perl on BS2000" |
| 226 | We still got a few errors during \f(CW\*(C`make test\*(C'\fR. Some of them are the |
| 227 | result of using bison. Bison prints \fIparser error\fR instead of \fIsyntax |
| 228 | error\fR, so we may ignore them. The following list shows |
| 229 | our errors, your results may differ: |
| 230 | .PP |
| 231 | op/numconvert.......FAILED tests 1409\-1440 |
| 232 | op/regexp...........FAILED tests 483, 496 |
| 233 | op/regexp_noamp.....FAILED tests 483, 496 |
| 234 | pragma/overload.....FAILED tests 152\-153, 170\-171 |
| 235 | pragma/warnings.....FAILED tests 14, 82, 129, 155, 192, 205, 207 |
| 236 | lib/bigfloat........FAILED tests 351\-352, 355 |
| 237 | lib/bigfltpm........FAILED tests 354\-355, 358 |
| 238 | lib/complex.........FAILED tests 267, 487 |
| 239 | lib/dumper..........FAILED tests 43, 45 |
| 240 | Failed 11/231 test scripts, 95.24% okay. 57/10595 subtests failed, 99.46% okay. |
| 241 | .Sh "Installing Perl on \s-1BS2000\s0" |
| 242 | .IX Subsection "Installing Perl on BS2000" |
| 243 | We have no nroff on \s-1BS2000\s0 \s-1POSIX\s0 (yet), so we ignored any errors while |
| 244 | installing the documentation. |
| 245 | .Sh "Using Perl in the Posix-Shell of \s-1BS2000\s0" |
| 246 | .IX Subsection "Using Perl in the Posix-Shell of BS2000" |
| 247 | \&\s-1BS2000\s0 \s-1POSIX\s0 doesn't support the shebang notation |
| 248 | (\f(CW\*(C`#!/usr/local/bin/perl\*(C'\fR), so you have to use the following lines |
| 249 | instead: |
| 250 | .PP |
| 251 | : # use perl |
| 252 | eval 'exec /usr/local/bin/perl \-S \f(CW$0\fR ${1+\*(L"$@\*(R"}' |
| 253 | if \f(CW$running_under_some_shell\fR; |
| 254 | .ie n .Sh "Using Perl in ""native"" \s-1BS2000\s0" |
| 255 | .el .Sh "Using Perl in ``native'' \s-1BS2000\s0" |
| 256 | .IX Subsection "Using Perl in native BS2000" |
| 257 | We don't have much experience with this yet, but try the following: |
| 258 | .PP |
| 259 | Copy your Perl executable to a \s-1BS2000\s0 \s-1LLM\s0 using bs2cp: |
| 260 | .PP |
| 261 | \&\f(CW\*(C`bs2cp /usr/local/bin/perl 'bs2:perl(perl,l)'\*(C'\fR |
| 262 | .PP |
| 263 | Now you can start it with the following (\s-1SDF\s0) command: |
| 264 | .PP |
| 265 | \&\f(CW\*(C`/START\-PROG FROM\-FILE=*MODULE(PERL,PERL),PROG\-MODE=*ANY,RUN\-MODE=*ADV\*(C'\fR |
| 266 | .PP |
| 267 | First you get the \s-1BS2000\s0 commandline prompt ('*'). Here you may enter |
| 268 | your parameters, e.g. \f(CW\*(C`\-e 'print "Hello World!\e\en";'\*(C'\fR (note the |
| 269 | double backslash!) or \f(CW\*(C`\-w\*(C'\fR and the name of your Perl script. |
| 270 | Filenames starting with \f(CW\*(C`/\*(C'\fR are searched in the Posix filesystem, |
| 271 | others are searched in the \s-1BS2000\s0 filesystem. You may even use |
| 272 | wildcards if you put a \f(CW\*(C`%\*(C'\fR in front of your filename (e.g. \f(CW\*(C`\-w |
| 273 | checkfiles.pl %*.c\*(C'\fR). Read your C/\*(C+ manual for additional |
| 274 | possibilities of the commandline prompt (look for |
| 275 | \&\s-1PARAMETER\-PROMPTING\s0). |
| 276 | .Sh "Floating point anomalies on \s-1BS2000\s0" |
| 277 | .IX Subsection "Floating point anomalies on BS2000" |
| 278 | There appears to be a bug in the floating point implementation on \s-1BS2000\s0 \s-1POSIX\s0 |
| 279 | systems such that calling \fIint()\fR on the product of a number and a small |
| 280 | magnitude number is not the same as calling \fIint()\fR on the quotient of |
| 281 | that number and a large magnitude number. For example, in the following |
| 282 | Perl code: |
| 283 | .PP |
| 284 | .Vb 4 |
| 285 | \& my $x = 100000.0; |
| 286 | \& my $y = int($x * 1e-5) * 1e5; # '0' |
| 287 | \& my $z = int($x / 1e+5) * 1e5; # '100000' |
| 288 | \& print "\e$y is $y and \e$z is $z\en"; # $y is 0 and $z is 100000 |
| 289 | .Ve |
| 290 | .PP |
| 291 | Although one would expect the quantities \f(CW$y\fR and \f(CW$z\fR to be the same and equal |
| 292 | to 100000 they will differ and instead will be 0 and 100000 respectively. |
| 293 | .Sh "Using PerlIO and different encodings on \s-1ASCII\s0 and \s-1EBCDIC\s0 partitions" |
| 294 | .IX Subsection "Using PerlIO and different encodings on ASCII and EBCDIC partitions" |
| 295 | Since version 5.8 Perl uses the new PerlIO on \s-1BS2000\s0. This enables |
| 296 | you using different encodings per \s-1IO\s0 channel. For example you may use |
| 297 | .PP |
| 298 | .Vb 9 |
| 299 | \& use Encode; |
| 300 | \& open($f, ">:encoding(ascii)", "test.ascii"); |
| 301 | \& print $f "Hello World!\en"; |
| 302 | \& open($f, ">:encoding(posix-bc)", "test.ebcdic"); |
| 303 | \& print $f "Hello World!\en"; |
| 304 | \& open($f, ">:encoding(latin1)", "test.latin1"); |
| 305 | \& print $f "Hello World!\en"; |
| 306 | \& open($f, ">:encoding(utf8)", "test.utf8"); |
| 307 | \& print $f "Hello World!\en"; |
| 308 | .Ve |
| 309 | .PP |
| 310 | to get two files containing \*(L"Hello World!\en\*(R" in \s-1ASCII\s0, \s-1EBCDIC\s0, \s-1ISO\s0 |
| 311 | Latin\-1 (in this example identical to \s-1ASCII\s0) respective UTF-EBCDIC (in |
| 312 | this example identical to normal \s-1EBCDIC\s0). See the documentation of |
| 313 | Encode::PerlIO for details. |
| 314 | .PP |
| 315 | As the PerlIO layer uses raw \s-1IO\s0 internally, all this totally ignores |
| 316 | the type of your filesystem (\s-1ASCII\s0 or \s-1EBCDIC\s0) and the \s-1IO_CONVERSION\s0 |
| 317 | environment variable. If you want to get the old behavior, that the |
| 318 | \&\s-1BS2000\s0 \s-1IO\s0 functions determine conversion depending on the filesystem |
| 319 | PerlIO still is your friend. You use \s-1IO_CONVERSION\s0 as usual and tell |
| 320 | Perl, that it should use the native \s-1IO\s0 layer: |
| 321 | .PP |
| 322 | .Vb 2 |
| 323 | \& export IO_CONVERSION=YES |
| 324 | \& export PERLIO=stdio |
| 325 | .Ve |
| 326 | .PP |
| 327 | Now your \s-1IO\s0 would be \s-1ASCII\s0 on \s-1ASCII\s0 partitions and \s-1EBCDIC\s0 on \s-1EBCDIC\s0 |
| 328 | partitions. See the documentation of PerlIO (without \f(CW\*(C`Encode::\*(C'\fR!) |
| 329 | for further posibilities. |
| 330 | .SH "AUTHORS" |
| 331 | .IX Header "AUTHORS" |
| 332 | Thomas Dorner |
| 333 | .SH "SEE ALSO" |
| 334 | .IX Header "SEE ALSO" |
| 335 | \&\s-1INSTALL\s0, perlport. |
| 336 | .Sh "Mailing list" |
| 337 | .IX Subsection "Mailing list" |
| 338 | If you are interested in the \s-1VM/ESA\s0, z/OS (formerly known as \s-1OS/390\s0) |
| 339 | and POSIX-BC (\s-1BS2000\s0) ports of Perl then see the perl-mvs mailing list. |
| 340 | To subscribe, send an empty message to perl\-mvs\-subscribe@perl.org. |
| 341 | .PP |
| 342 | See also: |
| 343 | .PP |
| 344 | .Vb 1 |
| 345 | \& http://lists.perl.org/showlist.cgi?name=perl-mvs |
| 346 | .Ve |
| 347 | .PP |
| 348 | There are web archives of the mailing list at: |
| 349 | .PP |
| 350 | .Vb 2 |
| 351 | \& http://www.xray.mpe.mpg.de/mailing-lists/perl-mvs/ |
| 352 | \& http://archive.develooper.com/perl-mvs@perl.org/ |
| 353 | .Ve |
| 354 | .SH "HISTORY" |
| 355 | .IX Header "HISTORY" |
| 356 | This document was originally written by Thomas Dorner for the 5.005 |
| 357 | release of Perl. |
| 358 | .PP |
| 359 | This document was podified for the 5.6 release of perl 11 July 2000. |