The AUTOLOAD part of the code did not change from the first CPAN version of this module 11 years ago as is more or less the same as advised cpan-AutoLoader. Nevertheless, the constant is found. Here are my trace modifications from the XS:

static double
constant(name, arg)
char *name;
int arg;
{
    errno = 0;
    printf ("constant '%s',%d\n", name, arg);
    switch (*name) {
...
    if (strEQ(name, "SQL_PARAM_INPUT_OUTPUT"))
#ifdef SQL_PARAM_INPUT_OUTPUT
        printf("Now I'm here and return %d\n",SQL_PARAM_INPUT_OUTPUT )
+;
        return SQL_PARAM_INPUT_OUTPUT;
#else
        goto not_there;
#endif
...

[download]

Otherwise this is unmodified code from CPAN (or IBM as You like).

This code should work, it has to be either with my local (missing) configuration, localization or ... well, I have no clue.

And it came to pass that in time the Great God Om spake unto Brutha, the Chosen One: "Psst!"
(Terry Pratchett, Small Gods)

In reply to Re^2: Problem with AUTOLOAD and Windows by Brutha
in thread Problem with AUTOLOAD and Windows by Brutha

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.