/usr/local/include/xapian/version.h:29:2: warning: #warning The C++ ABI version of compiler you are using does not exactly match [-Wcpp]
 #warning The C++ ABI version of compiler you are using does not exactly match
  ^~~~~~~
/usr/local/include/xapian/version.h:30:2: warning: #warning that of the compiler used to build the library. If linking fails [-Wcpp]
 #warning that of the compiler used to build the library. If linking fails
  ^~~~~~~
/usr/local/include/xapian/version.h:31:2: warning: #warning due to missing symbols, this is probably the reason why. [-Wcpp]
 #warning due to missing symbols, this is probably the reason why.
  ^~~~~~~
/usr/local/include/xapian/version.h:32:2: warning: #warning The Xapian library was built with g++ 4.2.1 [-Wcpp]
 #warning The Xapian library was built with g++ 4.2.1