Commit | Line | Data |
---|---|---|
9a997319 JH |
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 | |
8b204b88 JH |
11 | This is a port of Perl version 5 to VOS. Perl is a scripting or |
12 | macro language that is popular on many systems. See your local | |
13 | 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 | |
8b204b88 JH |
20 | (ftp://ftp.stratus.com/pub/vos/posix/alpha/alpha.html). There is |
21 | a generally-available version of POSIX that comes with the VOS | |
22 | Standard C Compiler or VOS C runtime in VOS Release 14.3.0 or | |
23 | higher. This port of perl will compile and bind with either | |
5b8c1387 JH |
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 | |
24e8e380 | 31 | fatal call to the VOS debugger. They are "dup", "fork", and |
8b204b88 JH |
32 | "waitpid". The lack of these functions prevents you from |
33 | starting VOS commands and grabbing their output in perl. The | |
34 | workaround is to run the commands outside of perl, then have perl | |
35 | process the output file. These functions are all available in | |
36 | 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 | ||
0d6ca59a JH |
49 | The VOS Standard C Compiler (or the VOS Standard C |
50 | Cross-Compiler) and the VOS C Runtime. If you are using | |
51 | the generally-available version of POSIX support, you may | |
52 | instead use the the VOS GNU C/C++ Compiler. These are | |
53 | standard Stratus products. | |
9a997319 JH |
54 | |
55 | =item 2 | |
56 | ||
57 | Either the VOS OS TCP/IP or STCP product set. If you are | |
58 | building with the alpha version of POSIX you need the OS | |
59 | TCP/IP product set. If you are building with the | |
60 | generally-available version of POSIX you need the STCP | |
61 | product set. These are standard Stratus products. | |
62 | ||
63 | =item 3 | |
64 | ||
65 | Either the alpha or generally-available version of the VOS | |
66 | POSIX.1 environment. | |
67 | ||
68 | The alpha version of POSIX.1 support is available on the | |
69 | Stratus FTP site. Login anonymously to ftp.stratus.com and | |
70 | get the file /pub/vos/posix/alpha/posix.save.evf.gz in | |
71 | binary file-transfer mode. Or use the Uniform Resource | |
72 | Locator (URL) | |
73 | ftp://ftp.stratus.com/pub/vos/alpha/posix.save.evf.gz from | |
74 | your web browser. Instructions for unbundling this file | |
75 | are at ftp://ftp.stratus.com/pub/vos/utility/utility.html. | |
76 | This is not a standard Stratus product. | |
77 | ||
0d6ca59a JH |
78 | In VOS Release 14.3.0, the generally-available version of |
79 | POSIX.1 support is bundled with the VOS Standard C compiler | |
80 | (or Standard C Cross-Compiler). In VOS Release 14.4.0 or | |
81 | higher, it is also bundled with the VOS C Runtime. These | |
82 | are standard Stratus products. | |
9a997319 JH |
83 | |
84 | =item 4 | |
85 | ||
86 | You must compile this version of Perl 5 on VOS Release | |
87 | 14.1.0 or higher because some of the perl source files | |
88 | contain more than 32,767 source lines. Due to VOS | |
89 | release-compatibility rules, this port of perl may not | |
90 | execute on VOS Release 12 or earlier. | |
91 | ||
0d6ca59a JH |
92 | =item 5 |
93 | ||
8b204b88 JH |
94 | If you are using the generally-available version of VOS POSIX |
95 | support, then you should also acquire the VOS GNU C/C++ Compiler | |
96 | and GNU Tools product because it provides many common Unix or | |
97 | POSIX commands. When perl is built with this version of POSIX | |
98 | support, it assumes that it can find "bash", "sed" and other | |
99 | POSIX-compatible commands in the directory | |
100 | /system/gnu_library/bin. | |
0d6ca59a | 101 | |
9a997319 | 102 | =back |
24e8e380 GS |
103 | |
104 | To build perl 5, change to the "vos" subdirectory and type the | |
105 | command "compile_perl -processor X", where X is the processor | |
106 | type (mc68020, i80860, pa7100, pa8000) that you wish to use. | |
5b8c1387 JH |
107 | Note that the generally-available version of POSIX.1 support is |
108 | not available for the mc68020 or i80860 processors. | |
109 | ||
0d6ca59a JH |
110 | Use the "-version alpha" control argument to build perl with |
111 | the alpha version of POSIX support, and use the "-version | |
112 | ga" control argument to build it with the | |
113 | generally-available version of POSIX. The default is "ga". | |
114 | ||
115 | Use the "-compiler cc" control argument to build perl with | |
116 | the VOS Standard C compiler. Use the "-compiler gcc" | |
117 | control argument to build it with the GNU GCC compiler. The | |
118 | default is "cc". | |
119 | ||
5b8c1387 JH |
120 | You must have purchased the VOS Standard C Cross Compiler in |
121 | order to compile perl for a processor type that is different | |
122 | from the processor type of the module. | |
123 | ||
24e8e380 | 124 | Note that code compiled for the pa7100 processor type can |
5b8c1387 JH |
125 | execute on the PA7100, PA8000, PA8500 and PA8600 processors, and |
126 | that code compiled for the pa8000 processor type can execute on | |
127 | the PA8000, PA8500 and PA8600 processors. | |
24e8e380 | 128 | |
9a997319 | 129 | =head2 Installing Perl 5 on VOS |
24e8e380 | 130 | |
9a997319 | 131 | =over 4 |
24e8e380 | 132 | |
9a997319 JH |
133 | =item 1 |
134 | ||
135 | Create the directory >system>ported>command_library. | |
136 | ||
137 | =item 2 | |
138 | ||
139 | Copy the appropriate version of the perl program module to | |
140 | this directory. For example, with your current directory | |
141 | set to the top-level directory of Perl 5, to install the | |
142 | executable program module for the Motorola 68K | |
143 | architecture, enter: | |
24e8e380 GS |
144 | |
145 | !copy_file vos>obj>perl.pm >system>ported>command_library>* | |
146 | ||
9a997319 JH |
147 | (If you wish to use both Perl version 4 and Perl version 5, |
148 | you must give them different names; for example, perl.pm | |
149 | and perl5.pm). | |
150 | ||
151 | =item 3 | |
24e8e380 | 152 | |
9a997319 | 153 | Create the directory >system>ported>perl>lib. |
24e8e380 | 154 | |
9a997319 JH |
155 | =item 4 |
156 | ||
157 | Copy all of the files and subdirectories from the lib | |
158 | subdirectory into this new directory. For example, with | |
159 | the current directory set to the top-level directory of the | |
160 | perl distribution, enter: | |
24e8e380 | 161 | |
5b8c1387 | 162 | !copy_dir lib >system>ported>perl>lib>5.7 |
24e8e380 | 163 | |
9a997319 JH |
164 | =item 5 |
165 | ||
166 | While there are currently no architecture-specific | |
167 | extensions or modules distributed with perl, the following | |
168 | directories can be used to hold such files: | |
24e8e380 | 169 | |
5b8c1387 JH |
170 | >system>ported>perl>lib>5.7.68k |
171 | >system>ported>perl>lib>5.7.860 | |
172 | >system>ported>perl>lib>5.7.7100 | |
173 | >system>ported>perl>lib>5.7.8000 | |
24e8e380 | 174 | |
9a997319 JH |
175 | =item 6 |
176 | ||
177 | Site-specific perl extensions and modules can be installed in one of | |
178 | two places. Put architecture-independent files into: | |
24e8e380 | 179 | |
5b8c1387 | 180 | >system>ported>perl>lib>site>5.7 |
24e8e380 | 181 | |
9a997319 JH |
182 | Put architecture-dependent files into one of the following |
183 | directories: | |
24e8e380 | 184 | |
5b8c1387 JH |
185 | >system>ported>perl>lib>site>5.7.68k |
186 | >system>ported>perl>lib>site>5.7.860 | |
187 | >system>ported>perl>lib>site>5.7.7100 | |
188 | >system>ported>perl>lib>site>5.7.8000 | |
24e8e380 | 189 | |
9a997319 JH |
190 | =item 7 |
191 | ||
192 | You can examine the @INC variable from within a perl program | |
193 | to see the order in which Perl searches these directories. | |
495c5fdc | 194 | |
9a997319 JH |
195 | =back |
196 | ||
197 | =head1 USING PERL IN VOS | |
198 | ||
a83b6f46 | 199 | =head2 Unimplemented Features of Perl on VOS |
495c5fdc | 200 | |
5b8c1387 JH |
201 | If perl is built with the alpha version of VOS POSIX.1 support |
202 | and if it attempts to call an unimplemented VOS POSIX.1 | |
203 | function, it will print a fatal error message and enter the VOS | |
204 | debugger. This error is not recoverable. See vos_dummies.c for | |
205 | a list of the unimplemented POSIX.1 functions. To see what | |
206 | functions are unimplemented and what the error message looks | |
207 | like, compile and execute "test_vos_dummies.c". | |
24e8e380 | 208 | |
a83b6f46 | 209 | =head2 Restrictions of Perl on VOS |
495c5fdc | 210 | |
24e8e380 GS |
211 | This port of Perl version 5 to VOS prefers Unix-style, |
212 | slash-separated pathnames over VOS-style greater-than-separated | |
213 | pathnames. VOS-style pathnames should work in most contexts, but | |
214 | if you have trouble, replace all greater-than characters by slash | |
215 | characters. Because the slash character is used as a pathname | |
216 | delimiter, Perl cannot process VOS pathnames containing a slash | |
217 | character in a directory or file name; these must be renamed. | |
495c5fdc | 218 | |
24e8e380 GS |
219 | This port of Perl also uses Unix-epoch date values internally. |
220 | As long as you are dealing with ASCII character string | |
221 | representations of dates, this should not be an issue. The | |
222 | supported epoch is January 1, 1980 to January 17, 2038. | |
495c5fdc | 223 | |
24e8e380 GS |
224 | See the file pod/perlport.pod for more information about the VOS |
225 | port of Perl. | |
495c5fdc | 226 | |
9a997319 | 227 | =head1 SUPPORT STATUS |
495c5fdc | 228 | |
495c5fdc | 229 | I'm offering this port "as is". You can ask me questions, but I |
5b8c1387 | 230 | can't guarantee I'll be able to answer them. There are some |
24e8e380 GS |
231 | excellent books available on the Perl language; consult a book |
232 | seller. | |
495c5fdc | 233 | |
9a997319 JH |
234 | =head1 AUTHOR |
235 | ||
236 | Paul Green (Paul_Green@stratus.com) | |
237 | ||
238 | =head1 LAST UPDATE | |
239 | ||
8b204b88 | 240 | July 4, 2001 |
9a997319 JH |
241 | |
242 | =cut |