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231 lines
6.4 KiB
231 lines
6.4 KiB
If you read this file _as_is_, just ignore the funny characters you
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see. It is written in the POD format (see pod/perlpod.pod) which is
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specially designed to be readable as is.
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=head1 NAME
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README.epoc - Perl for EPOC
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=head1 SYNOPSIS
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Perl 5 README file for the EPOC operating system.
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=head1 INTRODUCTION
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EPOC is a OS for palmtops and mobile phones. For more informations look at:
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http://www.symbian.com/
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This is a port of perl to EPOC. It runs on ER5 machines: Psion 5mx,
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5mx Pro, Psion Revo and on the Ericson M128. I have no report about
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the Psion Netbook or the S7. It runs on ER3 Hardware (Series 5
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classic), too. For more information about this hardware please refer
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to http://www.psion.com.
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Vendors which like to have support for their devices are free to send
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me a sample.
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=head1 INSTALLING PERL ON EPOC
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You can download a ready-to-install version from
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http://www.science-computing.de/o.flebbe/perl. You may find other
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versions with some CPAN modules included at this location.
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You will need at least 4MB free space in order to install and run
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perl.
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Install perl.sis on the EPOC machine. If you do not know how to do
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that, consult your PsiWin documentation.
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Perl itself and its standard library is using 2.9 MB disk space.
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Unicode support and some other modules are left out. (For details,
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please look into epoc/createpkg.pl). If you like to use these modules,
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you are free to copy them from a current perl release.
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=head1 STARTING PERL ON EPOC
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For ER5 machines, you can get the software Perlstart
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http://www.science-computing.de/o.flebbe/perl. It contains file
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recognizers for files with the extension .pl and .pm. With it you can
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start perl with a double click on the camel icon. Be sure to configure
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the perl installation drive first. You can even provide a script with
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a special commandline, if needed.
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Alternativly you can get ESHELL from symbian:
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http://developer.epocworld.com/downloads/progs/Eshell.zip
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Running ESHELL you can enter: perl -de 0 in order to run the perl
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debugger. If you are leaving perl, you get into the system screen. You
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have to switch back manually to ESHELL. When perl is running, you will
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see a task with the name STDOUT in the task list.
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If you have a ER3 machine (i.e. a PSION 5), you may have to supply the
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full path to the perl executable C:\system\programs\perl.exe.
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If you need to set the current directory of perl, please use the
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command line switch '-x'. See L<perlrun> for details.
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=head1 STOPPING PERL ON EPOC
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You can stop a running perl process in the task list by closing the
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application `STDOUT'. You cannot stop a running perl process if it has
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not written anyting to stdout or stderr! Be very cautious with I/O
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redirection. You will have to reboot the PDA!
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=head1 USING PERL ON EPOC
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=head2 I/O Redirection
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You can redirect the output with the UNIX bourne shell syntax (this is
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built into perl rather then eshell) For instance the following command
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line will run the script test.pl with the output redirected to
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stdout_file, the errors to stderr_file and input from stdin_file.
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perl test.pl >stdout_file <stdin_file 2>stderr_file
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Alternatively you can use 2>&1 in order to add the standard error
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output to stdout.
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=head2 PATH Names
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ESHELL looks for executables in ?:/System/Programs. The SIS file
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installs perl in this special folder directory. The default drive and
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path are the same as folder the executable resides. The EPOC
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filesystem is case-preserving, not case-sensitive.
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The EPOC estdlib uses the ?: syntax for establishing a search order:
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First in C: (RAM), then on D: (CF Card, if present) and last in Z:
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(ROM). For instance ?:\a.txt searches for C:\a.txt, D:\a.txt (and
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Z:\a.txt)
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The perl @INC search path is implemented with '?:'. Your perl
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executable can live on a different drive than the perl library or even
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your scripts.
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ESHELL paths have to be written with backslashes '\', file arguments
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to perl with slashes '/'. Remember that I/O redirection is done
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internally in perl, so please use slashes for redirects.
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perl.exe C:/test.pl >C:/output.txt
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=head2 Editors
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A suitable text editor can be downloaded from symbian
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http://developer.epocworld.com/downloads/progs/Editor.zip
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=head2 Features
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The built-in function EPOC::getcwd returns the current directory.
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=head2 Restrictions
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Features are left out, because of restrictions of the POSIX support in
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EPOC:
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=over 4
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=item *
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backquoting, pipes etc.
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=item *
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system() does not inherit ressources like: file descriptors,
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environment etc.
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=item *
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signal, kill, alarm. Do not try to use them. This may be
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impossible to implement on EPOC.
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=item *
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select is missing.
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=item *
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binmode does not exist. (No CR LF to LF translation for text files)
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=item *
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EPOC does not handle the notion of current drive and current
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directory very well (i.e. not at all, but it tries hard to emulate
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one) See PATH.
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=item *
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Heap is limited to 4MB.
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=item *
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Dynamic loading is not implemented.
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=back
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=head2 Compiling Perl 5 on the EPOC cross compiling environment
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Sorry, this is far too short.
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=over 4
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=item *
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You will need the C++ SDK from http://developer.epocworld.com/.
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=item *
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You will need to set up the cross SDK from
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http://www.science-computing.de/o.flebbe/sdk
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=item *
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You may have to adjust config.sh (cc, cppflags) to reflect your epoc
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and SDK location.
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=item *
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Get the Perl sources from your nearest CPAN site.
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=item *
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Unpack the sources.
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=item *
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Build a native perl from this sources... Make sure to save the
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miniperl executable as miniperl.native.
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Start again from scratch
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cp epoc/* .
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./Configure -S
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make
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cp miniperl.native miniperl
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make
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make ext/Errno/pm_to_blib
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perl link.pl perlmain.o lib/auto/DynaLoader/DynaLoader.a \
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lib/auto/Data/Dumper/Dumper.a \
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lib/auto/File/Glob/Glob.a lib/auto/IO/IO.a \
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lib/auto/Socket/Socket.a \
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lib/auto/Fcntl/Fcntl.a lib/auto/Sys/Hostname/Hostname.a \
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perl.a `cat ext.libs`
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perl createpkg.pl
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wine G:/bin/makesis perl.pkg perl.sis
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=back
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=head1 SUPPORT STATUS
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I'm offering this port "as is". You can ask me questions, but I can't
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guarantee I'll be able to answer them.
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=head1 AUTHOR
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Olaf Flebbe <[email protected]>
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http://www.science-computing.de/o.flebbe/perl/
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=head1 LAST UPDATE
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2001-02-26
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=cut
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