[Bug 5088] New: Wine compilation does not recognize that libxml2 is installed

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5088

Summary: Wine compilation does not recognize that libxml2 is
                    installed
           Product: Wine
           Version: 0.9.12.
          Platform: PC-x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-kernel
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

When running some programs under Wine 0.9.12, I get the following 
error message:

"This program tried to use a DOMDocument object, 
libxml2 support was not present at compile time."

The error message seems to be generated by some source code
from Wine itself, i.e.  wine/dlls/msxml3/domdoc.c
However, the part of the program with the error message
will only be compiled when libxml2 is not present at
compile time, i.e. when the variable HAVE_LIBXML2 in Wine is false.
In my Gentoo system, libxml2 was installed with version 1.8.17-r2 
at compile time, but that variable was not set correctly.