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1 | If you read this file _as_is_, just ignore the funny characters you |
2 | see. It is written in the POD format (see pod/perlpod.pod) which is | |
3 | specially designed to be readable as is. | |
4 | ||
5 | =head1 NAME | |
6 | ||
7 | README.vos - Perl for Stratus VOS | |
8 | ||
9 | =head1 SYNOPSIS | |
24e8e380 | 10 | |
9a997319 JH |
11 | This is a port of Perl version 5, revision 7, to VOS. Perl is a |
12 | scripting or macro language that is popular on many systems. See your | |
13 | local computer bookstore for a number of good books on Perl. | |
495c5fdc | 14 | |
9a997319 | 15 | =head2 Stratus POSIX Support |
495c5fdc | 16 | |
5b8c1387 JH |
17 | Note that there are two different implementations of POSIX.1 |
18 | support on VOS. There is an alpha version of POSIX that is | |
19 | available from the Stratus anonymous ftp site | |
20 | (ftp://ftp.stratus.com/pub/vos/posix/alpha/alpha.html). There | |
21 | is a generally-available version of POSIX that comes with the | |
22 | VOS Standard C compiler and C runtime in VOS Release 14.3.0 or | |
23 | higher. This port of POSIX will compile and bind with either | |
24 | version of POSIX. | |
25 | ||
26 | Most of the Perl features should work on VOS regardless of which | |
27 | version of POSIX that you are using. However, the alpha version | |
28 | of POSIX is missing a number of key functions, and therefore any | |
495c5fdc PG |
29 | attempt by perl.pm to call the following unimplemented POSIX |
30 | functions will result in an error message and an immediate and | |
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31 | fatal call to the VOS debugger. They are "dup", "fork", and |
32 | "waitpid". The lack of these functions pretty much prevents you | |
33 | from starting VOS commands and grabbing their output in perl. | |
34 | The workaround is to run the commands outside of perl, then have | |
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35 | perl process the output file. These functions are all available |
36 | in the generally-available version of POSIX. | |
24e8e380 | 37 | |
9a997319 JH |
38 | =head1 INSTALLING PERL IN VOS |
39 | ||
40 | =head2 Compiling Perl 5 on VOS | |
495c5fdc | 41 | |
495c5fdc PG |
42 | Before you can build Perl 5 on VOS, you need to have or acquire the |
43 | following additional items. | |
44 | ||
9a997319 JH |
45 | =over 5 |
46 | ||
47 | =item 1 | |
48 | ||
49 | The VOS Standard C Compiler and Runtime, or the VOS Standard C | |
50 | Cross-Compiler. This is a standard Stratus product. | |
51 | ||
52 | =item 2 | |
53 | ||
54 | Either the VOS OS TCP/IP or STCP product set. If you are | |
55 | building with the alpha version of POSIX you need the OS | |
56 | TCP/IP product set. If you are building with the | |
57 | generally-available version of POSIX you need the STCP | |
58 | product set. These are standard Stratus products. | |
59 | ||
60 | =item 3 | |
61 | ||
62 | Either the alpha or generally-available version of the VOS | |
63 | POSIX.1 environment. | |
64 | ||
65 | The alpha version of POSIX.1 support is available on the | |
66 | Stratus FTP site. Login anonymously to ftp.stratus.com and | |
67 | get the file /pub/vos/posix/alpha/posix.save.evf.gz in | |
68 | binary file-transfer mode. Or use the Uniform Resource | |
69 | Locator (URL) | |
70 | ftp://ftp.stratus.com/pub/vos/alpha/posix.save.evf.gz from | |
71 | your web browser. Instructions for unbundling this file | |
72 | are at ftp://ftp.stratus.com/pub/vos/utility/utility.html. | |
73 | This is not a standard Stratus product. | |
74 | ||
75 | The generally-available version of POSIX.1 support is | |
76 | bundled with the VOS Standard C compiler and Runtime (or | |
77 | Cross-Compiler) in VOS Release 14.3.0 or higher. This is a | |
78 | standard Stratus product. | |
79 | ||
80 | =item 4 | |
81 | ||
82 | You must compile this version of Perl 5 on VOS Release | |
83 | 14.1.0 or higher because some of the perl source files | |
84 | contain more than 32,767 source lines. Due to VOS | |
85 | release-compatibility rules, this port of perl may not | |
86 | execute on VOS Release 12 or earlier. | |
87 | ||
88 | =back | |
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89 | |
90 | To build perl 5, change to the "vos" subdirectory and type the | |
91 | command "compile_perl -processor X", where X is the processor | |
92 | type (mc68020, i80860, pa7100, pa8000) that you wish to use. | |
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93 | Note that the generally-available version of POSIX.1 support is |
94 | not available for the mc68020 or i80860 processors. | |
95 | ||
96 | You must have purchased the VOS Standard C Cross Compiler in | |
97 | order to compile perl for a processor type that is different | |
98 | from the processor type of the module. | |
99 | ||
24e8e380 | 100 | Note that code compiled for the pa7100 processor type can |
5b8c1387 JH |
101 | execute on the PA7100, PA8000, PA8500 and PA8600 processors, and |
102 | that code compiled for the pa8000 processor type can execute on | |
103 | the PA8000, PA8500 and PA8600 processors. | |
24e8e380 | 104 | |
9a997319 | 105 | =head2 Installing Perl 5 on VOS |
24e8e380 | 106 | |
9a997319 | 107 | =over 4 |
24e8e380 | 108 | |
9a997319 JH |
109 | =item 1 |
110 | ||
111 | Create the directory >system>ported>command_library. | |
112 | ||
113 | =item 2 | |
114 | ||
115 | Copy the appropriate version of the perl program module to | |
116 | this directory. For example, with your current directory | |
117 | set to the top-level directory of Perl 5, to install the | |
118 | executable program module for the Motorola 68K | |
119 | architecture, enter: | |
24e8e380 GS |
120 | |
121 | !copy_file vos>obj>perl.pm >system>ported>command_library>* | |
122 | ||
9a997319 JH |
123 | (If you wish to use both Perl version 4 and Perl version 5, |
124 | you must give them different names; for example, perl.pm | |
125 | and perl5.pm). | |
126 | ||
127 | =item 3 | |
24e8e380 | 128 | |
9a997319 | 129 | Create the directory >system>ported>perl>lib. |
24e8e380 | 130 | |
9a997319 JH |
131 | =item 4 |
132 | ||
133 | Copy all of the files and subdirectories from the lib | |
134 | subdirectory into this new directory. For example, with | |
135 | the current directory set to the top-level directory of the | |
136 | perl distribution, enter: | |
24e8e380 | 137 | |
5b8c1387 | 138 | !copy_dir lib >system>ported>perl>lib>5.7 |
24e8e380 | 139 | |
9a997319 JH |
140 | =item 5 |
141 | ||
142 | While there are currently no architecture-specific | |
143 | extensions or modules distributed with perl, the following | |
144 | directories can be used to hold such files: | |
24e8e380 | 145 | |
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146 | >system>ported>perl>lib>5.7.68k |
147 | >system>ported>perl>lib>5.7.860 | |
148 | >system>ported>perl>lib>5.7.7100 | |
149 | >system>ported>perl>lib>5.7.8000 | |
24e8e380 | 150 | |
9a997319 JH |
151 | =item 6 |
152 | ||
153 | Site-specific perl extensions and modules can be installed in one of | |
154 | two places. Put architecture-independent files into: | |
24e8e380 | 155 | |
5b8c1387 | 156 | >system>ported>perl>lib>site>5.7 |
24e8e380 | 157 | |
9a997319 JH |
158 | Put architecture-dependent files into one of the following |
159 | directories: | |
24e8e380 | 160 | |
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161 | >system>ported>perl>lib>site>5.7.68k |
162 | >system>ported>perl>lib>site>5.7.860 | |
163 | >system>ported>perl>lib>site>5.7.7100 | |
164 | >system>ported>perl>lib>site>5.7.8000 | |
24e8e380 | 165 | |
9a997319 JH |
166 | =item 7 |
167 | ||
168 | You can examine the @INC variable from within a perl program | |
169 | to see the order in which Perl searches these directories. | |
495c5fdc | 170 | |
9a997319 JH |
171 | =back |
172 | ||
173 | =head1 USING PERL IN VOS | |
174 | ||
175 | =head2 Unimplemented Features | |
495c5fdc | 176 | |
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177 | If perl is built with the alpha version of VOS POSIX.1 support |
178 | and if it attempts to call an unimplemented VOS POSIX.1 | |
179 | function, it will print a fatal error message and enter the VOS | |
180 | debugger. This error is not recoverable. See vos_dummies.c for | |
181 | a list of the unimplemented POSIX.1 functions. To see what | |
182 | functions are unimplemented and what the error message looks | |
183 | like, compile and execute "test_vos_dummies.c". | |
24e8e380 | 184 | |
9a997319 | 185 | =head2 Restrictions |
495c5fdc | 186 | |
24e8e380 GS |
187 | This port of Perl version 5 to VOS prefers Unix-style, |
188 | slash-separated pathnames over VOS-style greater-than-separated | |
189 | pathnames. VOS-style pathnames should work in most contexts, but | |
190 | if you have trouble, replace all greater-than characters by slash | |
191 | characters. Because the slash character is used as a pathname | |
192 | delimiter, Perl cannot process VOS pathnames containing a slash | |
193 | character in a directory or file name; these must be renamed. | |
495c5fdc | 194 | |
24e8e380 GS |
195 | This port of Perl also uses Unix-epoch date values internally. |
196 | As long as you are dealing with ASCII character string | |
197 | representations of dates, this should not be an issue. The | |
198 | supported epoch is January 1, 1980 to January 17, 2038. | |
495c5fdc | 199 | |
24e8e380 GS |
200 | See the file pod/perlport.pod for more information about the VOS |
201 | port of Perl. | |
495c5fdc | 202 | |
9a997319 | 203 | =head1 SUPPORT STATUS |
495c5fdc | 204 | |
495c5fdc | 205 | I'm offering this port "as is". You can ask me questions, but I |
5b8c1387 | 206 | can't guarantee I'll be able to answer them. There are some |
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207 | excellent books available on the Perl language; consult a book |
208 | seller. | |
495c5fdc | 209 | |
9a997319 JH |
210 | =head1 AUTHOR |
211 | ||
212 | Paul Green (Paul_Green@stratus.com) | |
213 | ||
214 | =head1 LAST UPDATE | |
215 | ||
216 | October 24, 2000 | |
217 | ||
218 | =cut |