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Migrating perl code from 32 to 64 bit OS

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# 1  
Old 06-02-2005
Migrating perl code from 32 to 64 bit OS
Hello all,
I am migrating perl code from 32-bit Solaris 2.5 to 64-bit Solaris 9. On which part of code should I concentrate? And please suggest if there is any checklist for the same.

Thanks in advance,
Devesh.
# 2  
Old 06-02-2005
Quote:
Originally Posted by devesh
Hello all,
I am migrating perl code from 32-bit Solaris 2.5 to 64-bit Solaris 9. On which part of code should I concentrate? And please suggest if there is any checklist for the same.

Thanks in advance,
Devesh.
I depends on what exactly you are doing with perl, it is quite possible, depending on that, that there would be little or no change needed. Assuming the versions of perl are not wildly different of course.
# 3  
Old 06-02-2005
Probably unless you do some binary stuff, which is sensitive to how data are physically packed, Perl is largely platform independent. But the deeper you go, the more likely you will hit non-portable aspects (I guess XS apps or modules, which involves an intimate C-Perl binding, needs to be at least recompiled).

If you use pack() and unpack() functions, chances are you may run into portability problems as well.
# 4  
Old 06-06-2005
switching from 32 to 64 bit perl
Under AIX, the README file states the following:

README for AIX Perl 5.8.0 distribution
======================================

This readme is for explaining the logic behind how this version of perl
was packaged.

Perl 5.8.0 first released with AIX 5.2.0 in the Fall 2002.
The 64-bit and 32-bit versions are packaged together with
the 32-bit version being the default version.

The 64-bit version was built using both maximal 64-bit support along with
64-bit integer support.

Both versions reside under /usr/opt/perl5 directory.

Both versions are perl thread capable, built using the newer ithreads
(interpreter threads) and also have builtin support for PerlIO.

Also of interest is the libperl.a library located in the following places
under /usr/opt/perl5:

./lib/5.8.0/aix-thread-multi/CORE/libperl.a
./lib64/5.8.0/aix-thread-multi-64all/CORE/libperl.a

Switching to use the 64-bit version only requires redirecting
the perl symbolic links in /usr/bin, to point to the
64_bit versions of the same command in /usr/opt/perl5/bin.

For your convenience I've included scripts you may cut and
paste (at your own risk). That will re-link each file for you.

NOTE: You must run this script as root for it to work.


Check the README file for Solaris dist. you might find some hints there or
Check the folder where the lib's are stored there may be a lib64 folder, which may be used to convert your 32bit to 64 bit versions.
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