commit 1987082cf9278a639d772b4f35a8ae2d34944177
Author: Václav Slavík <vaclav@slavik.io>
Date:   Mon May 4 18:04:46 2015 +0200

    Fix compilation with Boost 1.58
    
    1.58 introduces strict type checking in boost::get() and while that's
    good in theory, the VariantUtils code makes it impractical to use.
    Instead, use relaxed_get() to get the old behavior. relaxed_get() didn't
    exist in older versions of Boost, so the code must check BOOST_VERSION.
    
    Fixes #93.

diff --git a/include/VariantUtils.h b/include/VariantUtils.h
index 1e6c243..5a72e59 100644
--- a/include/VariantUtils.h
+++ b/include/VariantUtils.h
@@ -8,6 +8,7 @@
 #define VARIANTUTILS_H
 
 #include <boost/any.hpp>
+#include <boost/version.hpp>
 #include "Lucene.h"
 #include "MiscUtils.h"
 
@@ -22,7 +23,11 @@ public:
 
     template <typename TYPE, typename VAR>
     static TYPE get(VAR var) {
+#if BOOST_VERSION < 105800
         return var.type() == typeid(TYPE) ? boost::get<TYPE>(var) : TYPE();
+#else
+        return var.type() == typeid(TYPE) ? boost::relaxed_get<TYPE>(var) : TYPE();
+#endif
     }
 
     template <typename TYPE, typename VAR>