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.
7 README.vos - Perl for Stratus VOS
11 This file contains notes for building perl on the Stratus VOS
12 operating system. Perl is a scripting or macro language that is
13 popular on many systems. See L<perlbook> for a number of good
16 These are instructions for building Perl from source. Most
17 people can simply download a pre-compiled distribution from the
18 VOS anonymous FTP site. This version of Perl is not supported
19 on VOS Release 14.2.0 or earlier releases. If you are running
20 VOS Release 14.3.0 or later, download Perl from
21 ftp://ftp.stratus.com/pub/vos/posix/ga/ga.html. Instructions
22 for unbundling the Perl distribution file are at
23 ftp://ftp.stratus.com/pub/vos/utility/utility.html.
25 If you are running VOS Release 14.4.1 or later, you can obtain a
26 pre-compiled, supported copy of perl by purchasing Release 2.0.1
27 of the VOS GNU C++ and GNU Tools product from Stratus
30 =head1 BUILDING PERL FOR VOS
32 To build perl from its source code, you must have a Continuum
33 platform running VOS Release 14.5.0 or later, the STCP product,
34 and the GNU C++ and GNU Tools, Release 2.0.1 or later.
36 To build full perl using the supplied Configure script and
37 makefiles, change to the "vos" subdirectory and type the command
38 "compile_full_perl" or "start_process compile_full_perl". This
39 will configure, build, and test perl. All of the test cases
40 that are executed should pass.
42 =head1 INSTALLING PERL IN VOS
48 If you have built perl using the Configure script, ensure that
49 you have modify permission to C<< >system>ported >> and type
55 While there are currently no architecture-specific
56 extensions or modules distributed with perl, the following
57 directories can be used to hold such files:
59 >system>ported>lib>perl5>5.9.0>68k
60 >system>ported>lib>perl5>5.9.0>860
61 >system>ported>lib>perl5>5.9.0>7100
62 >system>ported>lib>perl5>5.9.0>8000
66 Site-specific perl extensions and modules can be installed in one of
67 two places. Put architecture-independent files into:
69 >system>ported>lib>perl5>site_perl>5.9.0
71 Put site-specific architecture-dependent files into one of the
72 following directories:
74 >system>ported>lib>perl5>site_perl>5.9.0>68k
75 >system>ported>lib>perl5>site_perl>5.9.0>860
76 >system>ported>lib>perl5>site_perl>5.9.0>7100
77 >system>ported>lib>perl5>site_perl>5.9.0>8000
81 You can examine the @INC variable from within a perl program
82 to see the order in which Perl searches these directories.
86 =head1 USING PERL IN VOS
88 =head2 Restrictions of Perl on VOS
90 This port of Perl version 5 to VOS prefers Unix-style,
91 slash-separated pathnames over VOS-style greater-than-separated
92 pathnames. VOS-style pathnames should work in most contexts, but
93 if you have trouble, replace all greater-than characters by slash
94 characters. Because the slash character is used as a pathname
95 delimiter, Perl cannot process VOS pathnames containing a slash
96 character in a directory or file name; these must be renamed.
98 This port of Perl also uses Unix-epoch date values internally.
99 As long as you are dealing with ASCII character string
100 representations of dates, this should not be an issue. The
101 supported epoch is January 1, 1980 to January 17, 2038.
103 See the file pod/perlport.pod for more information about the VOS
106 =head2 Handling of underflow and overflow
108 Prior to VOS Release 14.7.0, VOS does not support automatically
109 mapping overflowed floating-point values to +infinity, nor
110 automatically mapping underflowed floating-point values to zero,
111 unlike many other platforms. The Perl pack function has been
112 modified to perform such mapping in software on VOS. Performing
113 other floating-point computations that underflow or overflow
114 will probably result in SIGFPE. Don't push your luck.
116 As of VOS Release 14.7.0, the VOS POSIX runtime sets up the
117 PA-RISC hardware floating-point status register so that the
118 overflow and underflow exceptions do not trap, but instead
119 automatically convert the result to infinity or zero, as
120 appropriate. As of this writing, there are still floating-point
121 operations that can trap, for example, subtracting two infinite
122 values. This is recorded as suggestion posix-1022, which is not
127 When Perl 5.8.1 is built using the native build process on VOS
128 Release 14.5.0 and GNU C++/GNU Tools 2.0.1, all but five
129 attempted tests either pass or result in TODO (ignored)
130 failures. The tests that fail are:
132 ext/Time/HiRes/HiRes, tests 8, 11, 20, and 21.
133 lib/Net/Ping/t/450_service, test 8.
135 =head1 SUPPORT STATUS
137 I'm offering this port "as is". You can ask me questions, but I
138 can't guarantee I'll be able to answer them. There are some
139 excellent books available on the Perl language; consult a book
142 If you want a supported version of perl for VOS, purchase the VOS
143 GNU C++ and GNU Tools Release 2.0.1 product from Stratus
144 Technologies, along with a support contract (or from anyone else
145 who will sell you support).
149 Paul Green (Paul.Green@stratus.com)