Revert "Upgrade Devel::PPPort from 3.21 to 3.22"

[perl5.git] / README.bs2000

diff --git a/README.bs2000 b/README.bs2000
index 566ba21..a1ea777 100644 (file)
--- a/README.bs2000
+++ b/README.bs2000
@@ -1,11 +1,11 @@
 This document is written in pod format hence there are punctuation
 This document is written in pod format hence there are punctuation

-characters in in odd places.  Do not worry, you've apparently got the
+characters 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
 
 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.BS2000 - building and installing Perl for BS2000.
+perlbs2000 - building and installing Perl for BS2000.

 
 =head1 SYNOPSIS
 
 
 =head1 SYNOPSIS
 


@@ -20,12 +20,12 @@ and testing it with 3.1A and are currently using Version V4.0A.
 
 You may need the following GNU programs in order to install perl:
 
 
 You may need the following GNU programs in order to install perl:
 

-=head2 gzip
+=head2 gzip on BS2000

 
 We used version 1.2.4, which could be installed out of the box with
 one failure during 'make check'.
 
 
 We used version 1.2.4, which could be installed out of the box with
 one failure during 'make check'.
 

-=head2 bison
+=head2 bison on BS2000

 
 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
 
 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


@@ -33,7 +33,7 @@ pure (reentrant) parser of bison.  We used version 1.25, but we had to
 add a few changes due to EBCDIC.  See below for more details
 concerning yacc.
 
 add a few changes due to EBCDIC.  See below for more details
 concerning yacc.
 

-=head2 Unpacking
+=head2 Unpacking Perl Distribution on BS2000

 
 To extract an ASCII tar archive on BS2000 POSIX you need an ASCII
 filesystem (we used the mountpoint /usr/local/ascii for this).  Now
 
 To extract an ASCII tar archive on BS2000 POSIX you need an ASCII
 filesystem (we used the mountpoint /usr/local/ascii for this).  Now


@@ -55,7 +55,7 @@ cd /usr/local/src
 IO_CONVERSION=YES
 cp -r /usr/local/ascii/perl5.005_02 ./
 
 IO_CONVERSION=YES
 cp -r /usr/local/ascii/perl5.005_02 ./
 

-=head2 Compiling
+=head2 Compiling Perl on BS2000

 
 There is a "hints" file for BS2000 called hints.posix-bc (because
 posix-bc is the OS name given by `uname`) that specifies the correct
 
 There is a "hints" file for BS2000 called hints.posix-bc (because
 posix-bc is the OS name given by `uname`) that specifies the correct


@@ -102,7 +102,7 @@ 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.
 
 We build perl using GNU make.  We tried the native make once and it
 worked too.
 

-=head2 Testing
+=head2 Testing Perl on BS2000

 
 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
 
 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


@@ -120,13 +120,13 @@ 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.
 
 lib/dumper..........FAILED tests 43, 45
 Failed 11/231 test scripts, 95.24% okay. 57/10595 subtests failed, 99.46% okay.
 

-=head2 Install
+=head2 Installing Perl on BS2000

 
 We have no nroff on BS2000 POSIX (yet), so we ignored any errors while
 installing the documentation.
 
 
 
 We have no nroff on BS2000 POSIX (yet), so we ignored any errors while
 installing the documentation.
 
 

-=head2 Using Perl in the Posix-Shell
+=head2 Using Perl in the Posix-Shell of BS2000

 
 BS2000 POSIX doesn't support the shebang notation
 (C<#!/usr/local/bin/perl>), so you have to use the following lines
 
 BS2000 POSIX doesn't support the shebang notation
 (C<#!/usr/local/bin/perl>), so you have to use the following lines


@@ -151,14 +151,14 @@ C</START-PROG FROM-FILE=*MODULE(PERL,PERL),PROG-MODE=*ANY,RUN-MODE=*ADV>
 First you get the BS2000 commandline prompt ('*').  Here you may enter
 your parameters, e.g. C<-e 'print "Hello World!\\n";'> (note the
 double backslash!) or C<-w> and the name of your Perl script.
 First you get the BS2000 commandline prompt ('*').  Here you may enter
 your parameters, e.g. C<-e 'print "Hello World!\\n";'> (note the
 double backslash!) or C<-w> and the name of your Perl script.

-Filenames starting with C</> are searched in in the Posix filesystem,
+Filenames starting with C</> are searched in the Posix filesystem,

 others are searched in the BS2000 filesystem.  You may even use
 wildcards if you put a C<%> in front of your filename (e.g. C<-w
 checkfiles.pl %*.c>).  Read your C/C++ manual for additional
 possibilities of the commandline prompt (look for
 PARAMETER-PROMPTING).
 
 others are searched in the BS2000 filesystem.  You may even use
 wildcards if you put a C<%> in front of your filename (e.g. C<-w
 checkfiles.pl %*.c>).  Read your C/C++ manual for additional
 possibilities of the commandline prompt (look for
 PARAMETER-PROMPTING).
 

-=head2 Floating point anomalies
+=head2 Floating point anomalies on BS2000

 
 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
 
 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


@@ -174,6 +174,40 @@ Perl code:
 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.
 
 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.
 

+=head2 Using PerlIO and different encodings on ASCII and EBCDIC partitions
+
+Since version 5.8 Perl uses the new PerlIO on BS2000.  This enables
+you using different encodings per IO channel.  For example you may use
+
+    use Encode;
+    open($f, ">:encoding(ascii)", "test.ascii");
+    print $f "Hello World!\n";
+    open($f, ">:encoding(posix-bc)", "test.ebcdic");
+    print $f "Hello World!\n";
+    open($f, ">:encoding(latin1)", "test.latin1");
+    print $f "Hello World!\n";
+    open($f, ">:encoding(utf8)", "test.utf8");
+    print $f "Hello World!\n";
+
+to get two files containing "Hello World!\n" in ASCII, EBCDIC, ISO
+Latin-1 (in this example identical to ASCII) respective UTF-EBCDIC (in
+this example identical to normal EBCDIC).  See the documentation of
+Encode::PerlIO for details.
+
+As the PerlIO layer uses raw IO internally, all this totally ignores
+the type of your filesystem (ASCII or EBCDIC) and the IO_CONVERSION
+environment variable.  If you want to get the old behavior, that the
+BS2000 IO functions determine conversion depending on the filesystem
+PerlIO still is your friend.  You use IO_CONVERSION as usual and tell
+Perl, that it should use the native IO layer:
+
+    export IO_CONVERSION=YES
+    export PERLIO=stdio
+
+Now your IO would be ASCII on ASCII partitions and EBCDIC on EBCDIC
+partitions.  See the documentation of PerlIO (without C<Encode::>!)
+for further possibilities.
+

 =head1 AUTHORS
 
 Thomas Dorner
 =head1 AUTHORS
 
 Thomas Dorner


@@ -184,13 +218,18 @@ L<INSTALL>, L<perlport>.
 
 =head2 Mailing list
 
 
 =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:
+If you are interested in the z/OS (formerly known as OS/390)
+and POSIX-BC (BS2000) ports of Perl then see the perl-mvs mailing list.
+To subscribe, send an empty message to perl-mvs-subscribe@perl.org.
+
+See also:
+
+    http://lists.perl.org/list/perl-mvs.html

 
 

-    subscribe perl-mvs
+There are web archives of the mailing list at:

 
 

-to majordomo@perl.org.
+    http://www.xray.mpe.mpg.de/mailing-lists/perl-mvs/
+    http://archive.develooper.com/perl-mvs@perl.org/

 
 =head1 HISTORY
 
 
 =head1 HISTORY