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Don't try and redefine macros that are already set.

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[SVN r68095]
This commit is contained in:
John Maddock
2011-01-13 12:14:56 +00:00
parent c02516b25b
commit 902217df24
1 changed files with 4 additions and 4 deletions
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8
include/boost/type_traits/common_type.hpp
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@@ -11,20 +11,20 @@
#include <boost/config.hpp>
#ifdef __SUNPRO_CC
#if defined(__SUNPRO_CC) && !defined(BOOST_COMMON_TYPE_DONT_USE_TYPEOF)
# define BOOST_COMMON_TYPE_DONT_USE_TYPEOF
#endif
#ifdef __IBMCPP__
#if defined(__IBMCPP__) && !defined(BOOST_COMMON_TYPE_DONT_USE_TYPEOF)
# define BOOST_COMMON_TYPE_DONT_USE_TYPEOF
#endif
//----------------------------------------------------------------------------//
#if defined(BOOST_NO_VARIADIC_TEMPLATES)
#if defined(BOOST_NO_VARIADIC_TEMPLATES) && !defined(BOOST_COMMON_TYPE_ARITY)
#define BOOST_COMMON_TYPE_ARITY 3
#endif
//----------------------------------------------------------------------------//
#if defined(BOOST_NO_DECLTYPE) && !defined(BOOST_COMMON_TYPE_DONT_USE_TYPEOF)
#if defined(BOOST_NO_DECLTYPE) && !defined(BOOST_COMMON_TYPE_DONT_USE_TYPEOF) && !defined(BOOST_TYPEOF_SILENT)
#define BOOST_TYPEOF_SILENT
#include <boost/typeof/typeof.hpp> // boost wonders never cease!
#endif