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author | Jarkko Hietaniemi <jhi@iki.fi> | 2001-02-09 15:11:13 +0000 |
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committer | Jarkko Hietaniemi <jhi@iki.fi> | 2001-02-09 15:11:13 +0000 |
commit | dc5c060f96a5de06c9e1797503c70e8155e23e3e (patch) | |
tree | 1911ed2aa44096e17514f398c3e4de725a551b8f /README.posix-bc | |
parent | 0f5a2e590c3bb0e4ece26f74eeb3121063d229ad (diff) | |
download | perl-dc5c060f96a5de06c9e1797503c70e8155e23e3e.tar.gz |
Rename README.posix-bc to README.bs2000 to avoid confusion
when people think that perlposix-bc.pod tells anything about
Perl and POSIX. Regen toc.
p4raw-id: //depot/perl@8730
Diffstat (limited to 'README.posix-bc')
-rw-r--r-- | README.posix-bc | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/README.posix-bc b/README.posix-bc deleted file mode 100644 index a0128fda81..0000000000 --- a/README.posix-bc +++ /dev/null @@ -1,178 +0,0 @@ -This document is written in pod format hence there are punctuation -characters in in odd places. Do not worry, you've apparently got the -ASCII->EBCDIC translation worked out correctly. You can read more -about pod in pod/perlpod.pod or the short summary in the INSTALL file. - -=head1 NAME - -README.posix-bc - building and installing Perl for BS2000 POSIX. - -=head1 SYNOPSIS - -This document will help you Configure, build, test and install Perl -on BS2000 in the POSIX subsystem. - -=head1 DESCRIPTION - -This is a ported perl for the POSIX subsystem in BS2000 VERSION OSD -V3.1A. It may work on other versions, but that's the one we've tested -it on. - -You may need the following GNU programs in order to install perl: - -=head2 gzip - -We used version 1.2.4, which could be installed out of the box with -one failure during 'make check'. - -=head2 bison - -The yacc coming with BS2000 POSIX didn't work for us. So we had to -use bison. We had to make a few changes to perl in order to use the -pure (reentrant) parser of bison. We used version 1.25, but we had to -add a few changes due to EBCDIC. - -=head2 Unpacking - -To extract an ASCII tar archive on BS2000 POSIX you need an ASCII -filesystem (we used the mountpoint /usr/local/ascii for this). Now -you extract the archive in the ASCII filesystem without -I/O-conversion: - -cd /usr/local/ascii -export IO_CONVERSION=NO -gunzip < /usr/local/src/perl.tar.gz | pax -r - -You may ignore the error message for the first element of the archive -(this doesn't look like a tar archive / skipping to next file...), -it's only the directory which will be created automatically anyway. - -After extracting the archive you copy the whole directory tree to your -EBCDIC filesystem. B<This time you use I/O-conversion>: - -cd /usr/local/src -IO_CONVERSION=YES -cp -r /usr/local/ascii/perl5.005_02 ./ - -=head2 Compiling - -There is a "hints" file for posix-bc that specifies the correct values -for most things. The major problem is (of course) the EBCDIC character -set. We have german EBCDIC version. - -Because of our problems with the native yacc we used GNU bison to -generate a pure (=reentrant) parser for perly.y. So our yacc is -really the following script: - ------8<-----/usr/local/bin/yacc-----8<----- -#! /usr/bin/sh - -# Bison as a reentrant yacc: - -# save parameters: -params="" -while [[ $# -gt 1 ]]; do - params="$params $1" - shift -done - -# add flag %pure_parser: - -tmpfile=/tmp/bison.$$.y -echo %pure_parser > $tmpfile -cat $1 >> $tmpfile - -# call bison: - -echo "/usr/local/bin/bison --yacc $params $1\t\t\t(Pure Parser)" -/usr/local/bin/bison --yacc $params $tmpfile - -# cleanup: - -rm -f $tmpfile ------8<----------8<----- - -We still use the normal yacc for a2p.y though!!! We made a softlink -called byacc to distinguish between the two versions: - -ln -s /usr/bin/yacc /usr/local/bin/byacc - -We build perl using GNU make. We tried the native make once and it -worked too. - -=head2 Testing - -We still got a few errors during C<make test>. Some of them are the -result of using bison. Bison prints I<parser error> instead of I<syntax -error>, so we may ignore them. The following list shows -our errors, your results may differ: - -op/numconvert.......FAILED tests 1409-1440 -op/regexp...........FAILED tests 483, 496 -op/regexp_noamp.....FAILED tests 483, 496 -pragma/overload.....FAILED tests 152-153, 170-171 -pragma/warnings.....FAILED tests 14, 82, 129, 155, 192, 205, 207 -lib/bigfloat........FAILED tests 351-352, 355 -lib/bigfltpm........FAILED tests 354-355, 358 -lib/complex.........FAILED tests 267, 487 -lib/dumper..........FAILED tests 43, 45 -Failed 11/231 test scripts, 95.24% okay. 57/10595 subtests failed, 99.46% okay. - -=head2 Install - -We have no nroff on BS2000 POSIX (yet), so we ignored any errors while -installing the documentation. - - -=head2 Using Perl - -BS2000 POSIX doesn't support the shebang notation -(C<#!/usr/local/bin/perl>), so you have to use the following lines -instead: - -: # use perl - eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}' - if $running_under_some_shell; - -=head2 Floating point anomalies - -There appears to be a bug in the floating point implementation on BS2000 POSIX -systems such that calling int() on the product of a number and a small -magnitude number is not the same as calling int() on the quotient of -that number and a large magnitude number. For example, in the following -Perl code: - - my $x = 100000.0; - my $y = int($x * 1e-5) * 1e5; # '0' - my $z = int($x / 1e+5) * 1e5; # '100000' - print "\$y is $y and \$z is $z\n"; # $y is 0 and $z is 100000 - -Although one would expect the quantities $y and $z to be the same and equal -to 100000 they will differ and instead will be 0 and 100000 respectively. - -=head1 AUTHORS - -Thomas Dorner - -=head1 SEE ALSO - -L<INSTALL>, L<perlport>. - -=head2 Mailing list - -The Perl Institute (http://www.perl.org/) maintains a perl-mvs mailing -list of interest to all folks building and/or using perl on EBCDIC -platforms. To subscribe, send a message of: - - subscribe perl-mvs - -to majordomo@perl.org. - -=head1 HISTORY - -This document was originally written by Thomas Dorner for the 5.005 -release of Perl. - -This document was podified for the 5.6 release of perl 11 July 2000. - -=cut |