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