X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/a83b6f466440987720492416f8091f2530a9ab41..54dc0f912bb497a6d6861fbfa3f067ec3cfdfe0c:/README.vos diff --git a/README.vos b/README.vos index 5a4cb78..56a3419 100644 --- a/README.vos +++ b/README.vos @@ -8,162 +8,70 @@ README.vos - Perl for Stratus VOS =head1 SYNOPSIS -This is a port of Perl version 5, revision 7, to VOS. Perl is a -scripting or macro language that is popular on many systems. See your -local computer bookstore for a number of good books on Perl. - -=head2 Stratus POSIX Support - -Note that there are two different implementations of POSIX.1 -support on VOS. There is an alpha version of POSIX that is -available from the Stratus anonymous ftp site -(ftp://ftp.stratus.com/pub/vos/posix/alpha/alpha.html). There -is a generally-available version of POSIX that comes with the -VOS Standard C compiler and C runtime in VOS Release 14.3.0 or -higher. This port of POSIX will compile and bind with either -version of POSIX. - -Most of the Perl features should work on VOS regardless of which -version of POSIX that you are using. However, the alpha version -of POSIX is missing a number of key functions, and therefore any -attempt by perl.pm to call the following unimplemented POSIX -functions will result in an error message and an immediate and -fatal call to the VOS debugger. They are "dup", "fork", and -"waitpid". The lack of these functions pretty much prevents you -from starting VOS commands and grabbing their output in perl. -The workaround is to run the commands outside of perl, then have -perl process the output file. These functions are all available -in the generally-available version of POSIX. +This file contains notes for building perl on the Stratus VOS +operating system. Perl is a scripting or macro language that is +popular on many systems. See L for a number of good +books on Perl. + +These are instructions for building Perl from source. Most +people can simply download a pre-compiled distribution from the +VOS anonymous FTP site. This version of Perl is not supported +on VOS Release 14.2.0 or earlier releases. If you are running +VOS Release 14.3.0 or later, download Perl from +ftp://ftp.stratus.com/pub/vos/posix/ga/ga.html. Instructions +for unbundling the Perl distribution file are at +ftp://ftp.stratus.com/pub/vos/utility/utility.html. + +If you are running VOS Release 14.4.1 or later, you can obtain a +pre-compiled, supported copy of perl by purchasing Release 2.0.1 +(or later) of the VOS GNU C++ and GNU Tools product from Stratus +Technologies. + +=head1 BUILDING PERL FOR VOS + +To build perl from its source code, you must have a Continuum +platform running VOS Release 14.5.0 or later, the STCP product, +and the GNU C++ and GNU Tools, Release 2.0.1 or later. + +To build full perl using the supplied Configure script and +makefiles, change to the "vos" subdirectory and type the command +"compile_full_perl" or "start_process compile_full_perl". This +will configure, build, and test perl. =head1 INSTALLING PERL IN VOS -=head2 Compiling Perl 5 on VOS - -Before you can build Perl 5 on VOS, you need to have or acquire the -following additional items. - -=over 5 - -=item 1 - -The VOS Standard C Compiler and Runtime, or the VOS Standard C -Cross-Compiler. This is a standard Stratus product. - -=item 2 - -Either the VOS OS TCP/IP or STCP product set. If you are -building with the alpha version of POSIX you need the OS -TCP/IP product set. If you are building with the -generally-available version of POSIX you need the STCP -product set. These are standard Stratus products. - -=item 3 - -Either the alpha or generally-available version of the VOS -POSIX.1 environment. - -The alpha version of POSIX.1 support is available on the -Stratus FTP site. Login anonymously to ftp.stratus.com and -get the file /pub/vos/posix/alpha/posix.save.evf.gz in -binary file-transfer mode. Or use the Uniform Resource -Locator (URL) -ftp://ftp.stratus.com/pub/vos/alpha/posix.save.evf.gz from -your web browser. Instructions for unbundling this file -are at ftp://ftp.stratus.com/pub/vos/utility/utility.html. -This is not a standard Stratus product. - -The generally-available version of POSIX.1 support is -bundled with the VOS Standard C compiler and Runtime (or -Cross-Compiler) in VOS Release 14.3.0 or higher. This is a -standard Stratus product. - -=item 4 - -You must compile this version of Perl 5 on VOS Release -14.1.0 or higher because some of the perl source files -contain more than 32,767 source lines. Due to VOS -release-compatibility rules, this port of perl may not -execute on VOS Release 12 or earlier. - -=back - -To build perl 5, change to the "vos" subdirectory and type the -command "compile_perl -processor X", where X is the processor -type (mc68020, i80860, pa7100, pa8000) that you wish to use. -Note that the generally-available version of POSIX.1 support is -not available for the mc68020 or i80860 processors. - -You must have purchased the VOS Standard C Cross Compiler in -order to compile perl for a processor type that is different -from the processor type of the module. - -Note that code compiled for the pa7100 processor type can -execute on the PA7100, PA8000, PA8500 and PA8600 processors, and -that code compiled for the pa8000 processor type can execute on -the PA8000, PA8500 and PA8600 processors. - -=head2 Installing Perl 5 on VOS - =over 4 =item 1 -Create the directory >system>ported>command_library. - -=item 2 - -Copy the appropriate version of the perl program module to -this directory. For example, with your current directory -set to the top-level directory of Perl 5, to install the -executable program module for the Motorola 68K -architecture, enter: - - !copy_file vos>obj>perl.pm >system>ported>command_library>* - -(If you wish to use both Perl version 4 and Perl version 5, -you must give them different names; for example, perl.pm -and perl5.pm). - -=item 3 - -Create the directory >system>ported>perl>lib. +If you have built perl using the Configure script, ensure that +you have modify permission to C<< >system>ported >> and type -=item 4 - -Copy all of the files and subdirectories from the lib -subdirectory into this new directory. For example, with -the current directory set to the top-level directory of the -perl distribution, enter: - - !copy_dir lib >system>ported>perl>lib>5.7 + gmake install -=item 5 +=item 2 While there are currently no architecture-specific extensions or modules distributed with perl, the following directories can be used to hold such files: - >system>ported>perl>lib>5.7.68k - >system>ported>perl>lib>5.7.860 - >system>ported>perl>lib>5.7.7100 - >system>ported>perl>lib>5.7.8000 + >system>ported>lib>perl5>5.9.0>7100 + >system>ported>lib>perl5>5.9.0>8000 -=item 6 +=item 3 Site-specific perl extensions and modules can be installed in one of two places. Put architecture-independent files into: - >system>ported>perl>lib>site>5.7 + >system>ported>lib>perl5>site_perl>5.9.0 -Put architecture-dependent files into one of the following -directories: +Put site-specific architecture-dependent files into one of the +following directories: - >system>ported>perl>lib>site>5.7.68k - >system>ported>perl>lib>site>5.7.860 - >system>ported>perl>lib>site>5.7.7100 - >system>ported>perl>lib>site>5.7.8000 + >system>ported>lib>perl5>site_perl>5.9.0>7100 + >system>ported>lib>perl5>site_perl>5.9.0>8000 -=item 7 +=item 4 You can examine the @INC variable from within a perl program to see the order in which Perl searches these directories. @@ -172,16 +80,6 @@ to see the order in which Perl searches these directories. =head1 USING PERL IN VOS -=head2 Unimplemented Features of Perl on VOS - -If perl is built with the alpha version of VOS POSIX.1 support -and if it attempts to call an unimplemented VOS POSIX.1 -function, it will print a fatal error message and enter the VOS -debugger. This error is not recoverable. See vos_dummies.c for -a list of the unimplemented POSIX.1 functions. To see what -functions are unimplemented and what the error message looks -like, compile and execute "test_vos_dummies.c". - =head2 Restrictions of Perl on VOS This port of Perl version 5 to VOS prefers Unix-style, @@ -200,6 +98,42 @@ supported epoch is January 1, 1980 to January 17, 2038. See the file pod/perlport.pod for more information about the VOS port of Perl. +=head2 Handling of underflow and overflow + +Prior to VOS Release 14.7.0, VOS does not support automatically +mapping overflowed floating-point values to +infinity, nor +automatically mapping underflowed floating-point values to zero, +unlike many other platforms. The Perl pack function has been +modified to perform such mapping in software on VOS. Performing +other floating-point computations that underflow or overflow +will probably result in SIGFPE. Don't push your luck. + +As of VOS Release 14.7.0, the VOS POSIX runtime sets up the +PA-RISC hardware floating-point status register so that the +overflow and underflow exceptions do not trap, but instead +automatically convert the result to infinity or zero, as +appropriate. As of this writing, there are still floating-point +operations that can trap, for example, subtracting two infinite +values. This is recorded as suggestion posix-1022, which is not +yet fixed. + +=head1 TEST STATUS + +When Perl 5.9.0 is built using the native build process on VOS +Release 14.7.0 and GNU C++/GNU Tools 2.0.2a, all but nine +attempted tests either pass or result in TODO (ignored) +failures. The tests that fail are: + +t/io/dup, test 2 +t/io/tell, test 28 +t/op/pack, test 0 +ext/B/t/bytecode, test 1 +ext/Devel/Peek/t/Peek, test 1 +ext/Encode/t/enc_module, test 1 +ext/IO/t/io_dup, test 2 +lib/ExtUtils/t/MM_Unix, test 94 +lib/Net/ing/t/450_service, test 8 + =head1 SUPPORT STATUS I'm offering this port "as is". You can ask me questions, but I @@ -207,12 +141,17 @@ can't guarantee I'll be able to answer them. There are some excellent books available on the Perl language; consult a book seller. +If you want a supported version of perl for VOS, purchase the +VOS GNU C++ and GNU Tools Release 2.0.1 (or later) product from +Stratus Technologies, along with a support contract (or from +anyone else who will sell you support). + =head1 AUTHOR -Paul Green (Paul_Green@stratus.com) +Paul Green (Paul.Green@stratus.com) =head1 LAST UPDATE -October 24, 2000 +January 15, 2004 =cut