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- If you read this file _as_is_, just ignore the funny characters you see.
- It is written in the POD format (see pod/perlpod.pod) which is specially
- designed to be readable as is.
-
- =head1 NAME
-
- perlplan9 - Plan 9-specific documentation for Perl
-
- =head1 DESCRIPTION
-
- These are a few notes describing features peculiar to
- Plan 9 Perl. As such, it is not intended to be a replacement
- for the rest of the Perl 5 documentation (which is both
- copious and excellent). If you have any questions to
- which you can't find answers in these man pages, contact
- Luther Huffman at lutherh@stratcom.com and we'll try to
- answer them.
-
- =head2 Invoking Perl
-
- Perl is invoked from the command line as described in
- L<perl>. Most perl scripts, however, do have a first line
- such as "#!/usr/local/bin/perl". This is known as a shebang
- (shell-bang) statement and tells the OS shell where to find
- the perl interpreter. In Plan 9 Perl this statement should be
- "#!/bin/perl" if you wish to be able to directly invoke the
- script by its name.
- Alternatively, you may invoke perl with the command "Perl"
- instead of "perl". This will produce Acme-friendly error
- messages of the form "filename:18".
-
- Some scripts, usually identified with a *.PL extension, are
- self-configuring and are able to correctly create their own
- shebang path from config information located in Plan 9
- Perl. These you won't need to be worried about.
-
- =head2 What's in Plan 9 Perl
-
- Although Plan 9 Perl currently only provides static
- loading, it is built with a number of useful extensions.
- These include Opcode, FileHandle, Fcntl, and POSIX. Expect
- to see others (and DynaLoading!) in the future.
-
- =head2 What's not in Plan 9 Perl
-
- As mentioned previously, dynamic loading isn't currently
- available nor is MakeMaker. Both are high-priority items.
-
- =head2 Perl5 Functions not currently supported in Plan 9 Perl
-
- Some, such as C<chown> and C<umask> aren't provided
- because the concept does not exist within Plan 9. Others,
- such as some of the socket-related functions, simply
- haven't been written yet. Many in the latter category
- may be supported in the future.
-
- The functions not currently implemented include:
-
- chown, chroot, dbmclose, dbmopen, getsockopt,
- setsockopt, recvmsg, sendmsg, getnetbyname,
- getnetbyaddr, getnetent, getprotoent, getservent,
- sethostent, setnetent, setprotoent, setservent,
- endservent, endnetent, endprotoent, umask
-
- There may be several other functions that have undefined
- behavior so this list shouldn't be considered complete.
-
- =head2 Signals in Plan 9 Perl
-
- For compatibility with perl scripts written for the Unix
- environment, Plan 9 Perl uses the POSIX signal emulation
- provided in Plan 9's ANSI POSIX Environment (APE). Signal stacking
- isn't supported. The signals provided are:
-
- SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGABRT,
- SIGFPE, SIGKILL, SIGSEGV, SIGPIPE, SIGPIPE, SIGALRM,
- SIGTERM, SIGUSR1, SIGUSR2, SIGCHLD, SIGCONT,
- SIGSTOP, SIGTSTP, SIGTTIN, SIGTTOU
-
- =head1 COMPILING AND INSTALLING PERL ON PLAN 9
-
- WELCOME to Plan 9 Perl, brave soul!
-
- This is a preliminary alpha version of Plan 9 Perl. Still to be
- implemented are MakeMaker and DynaLoader. Many perl commands are
- missing or currently behave in an inscrutable manner. These gaps will,
- with perseverance and a modicum of luck, be remedied in the near
- future.To install this software:
-
- 1. Create the source directories and libraries for perl by running the
- plan9/setup.rc command (i.e., located in the plan9 subdirectory).
- Note: the setup routine assumes that you haven't dearchived these
- files into /sys/src/cmd/perl. After running setup.rc you may delete
- the copy of the source you originally detarred, as source code has now
- been installed in /sys/src/cmd/perl. If you plan on installing perl
- binaries for all architectures, run "setup.rc -a".
-
- 2. After making sure that you have adequate privileges to build system
- software, from /sys/src/cmd/perl/5.00301 (adjust version
- appropriately) run:
-
- mk install
-
- If you wish to install perl versions for all architectures (68020,
- mips, sparc and 386) run:
-
- mk installall
-
- 3. Wait. The build process will take a *long* time because perl
- bootstraps itself. A 75MHz Pentium, 16MB RAM machine takes roughly 30
- minutes to build the distribution from scratch.
-
- =head2 Installing Perl Documentation on Plan 9
-
- This perl distribution comes with a tremendous amount of
- documentation. To add these to the built-in manuals that come with
- Plan 9, from /sys/src/cmd/perl/5.00301 (adjust version appropriately)
- run:
-
- mk man
-
- To begin your reading, start with:
-
- man perl
-
- This is a good introduction and will direct you towards other man
- pages that may interest you.
-
- (Note: "mk man" may produce some extraneous noise. Fear not.)
-
- =head1 BUGS
-
- "As many as there are grains of sand on all the beaches of the
- world . . ." - Carl Sagan
-
- =head1 Revision date
-
- This document was revised 09-October-1996 for Perl 5.003_7.
-
- =head1 AUTHOR
-
- Direct questions, comments, and the unlikely bug report (ahem) direct
- comments toward:
-
- Luther Huffman, lutherh@stratcom.com,
- Strategic Computer Solutions, Inc.
-