Problem using more than 1 module in Windows (XS) - please help



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Problem using more than 1 module in Windows (XS) - please help

Postby jatshergill » Wed, 20 Sep 2006 23:48:54 GMT

Hi all
	I have a problem that I am running into while using Perl XS to build
an interface to my C++ library. This is on a windows machine with perl
5.6.1. I was able to use PerlXS to expose out different 'c++
classes' that my API supports. I wrote the .XS files for each of
these objects and now I am able to make a simple file and use
these objects from Perl. The problem comes when I try to use more than
1 object (module) in a single .pl file. Here would an example

========== working example perl script  ================

use lib "C:/Documents and Settings/myusername/Desktop/perl
use MyDataReader;
my $dr = new MyDataReader("hsd_demo_pre");
$dr->execQuery("select * from bug");
print "fields: " . $dr->getFieldCount() . "\n";

================== perl script giving problem =============
use lib "C:/Documents and Settings/myusername/Desktop/perl
use MyDataReader;

use MyAdmin;   # Adding this line gives problems

my $dr = new MyDataReader("hsd_demo_pre");
$dr->execQuery("select * from bug");
print "fields: " . $dr->getFieldCount() . "\n";

========= Error Message ==================

C:\Documents and Settings\myusername\Desktop\perl experiment\api>perl
Can't load 'C:\Documents and Settings\ myusername \Desktop\perl
/MyAdmin.dll' for module MyAdmin: load_file:Attempt to access invalid
address at C
:/Perl/lib/ line 206.
Compilation failed in require at line 11.
BEGIN failed--compilation aborted at line 11.

So the problem shows up when I use more than one 'use' statements
in a perl script. Its important to note here that I can use the
'MyAdmin' module by itself just fine. So its not aproblem with that
module. The problem is only when I try to use more than 1 module in a
single perl script.

==================== Makefile.PL ===================
use ExtUtils::MakeMaker;
$CC = 'cl';
# See lib/ExtUtils/ for details of how to influence
# the contents of the Makefile that is written.
WriteMakefile( 'NAME' => 'MyDataReader',
               'VERSION' => '0.10',
               'DEFINE'	=> '-TP -EHsc',     # e.g., '-DHAVE_SOMETHING'
               'CC' => $CC,
               'LDDLFLAGS' => '-nologo -libpath:"C:\Perl\lib\CORE"
			   'LIBC' => 'msvcrtd.lib',
			   'LDLOADLIBS' => 'oldnames.lib kernel32.lib user32.lib gdi32.lib
winspool.lib  comdlg32.lib advapi32.lib shell32.lib ole32.lib
oleaut32.lib  netapi32.lib uuid.lib wsock32.lib mpr.lib winmm.lib
version.lib odbc32.lib odbccp32.lib msvcrtd.lib',
			   'CCFLAGS' => '-nologo -O1 -MDd -DNDEBUG -DWIN32 -D_CONSOLE
               'LD' => '$(CC)',
               'XSOPT' => '-C++',
			   'OPTIMIZE' => '-O1 -MDd -DNDEBUG',
               'PERM_RW' => '664',
               'PERM_RWX' => '775',
               'TYPEMAPS' => ['']    ,
			    'INC'      => "-Iinclude",
          	'MYEXTLIB' => 'lib\myexternalapi.lib'

========== end =========

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