[jira] [Created] (XERCESC-2260) Header include test uses #if instead of #ifdef

Thomas Klausner created XERCESC-2260:
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             Summary: Header include test uses #if instead of #ifdef
                 Key: XERCESC-2260
                 URL: https://issues.apache.org/jira/browse/XERCESC-2260
             Project: Xerces-C++
          Issue Type: Bug
          Components: Build
    Affects Versions: 3.2.4
         Environment: pkgsrc (on NetBSD)
            Reporter: Thomas Klausner
         Attachments: patch-src_xercesc_util_Xerces__autoconf__config.hpp.c=
make.in

When building xerces-c 3.2.4, it detects some system headers during the con=
figuration step and then defines symbols if these are headers are found.

If the headers are not found, the symbols are just not defined (instead of =
being defined to the value zero).

However, the installed header files (that other projects use) check these s=
ymbols with `#if` instead of `#ifdef`, which doesn't work well with undefin=
ed symbols.

=C2=A0

I've attached a patch switching which fixes the problem for me.



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