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POBoost Matrix in Objective C class does not compile
 

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    <p>I need to use some boost (<code>boost/numeric/ublas/matrix.hpp</code>) in my ObjectiveC/Foundation project. I installed boost using Homebrew (an it works in C++ Xcode project).</p> <p>I use XCode 4.2.1 (clang 3.0) under Lion 10.7.2. I created and empty Foundation project, added new ObjC class and included <code>#include &lt;boost/numeric/ublas/matrix.hpp&gt;</code>. It game me numerous warnings.</p> <p>My MAMatrix.mm (.mm means ObjC++):</p> <pre><code>#import "MAMatrix.h" #include &lt;boost/numeric/ublas/matrix.hpp&gt; @implementation MAMatrix - (id)initWithSize:(NSUInteger)aSize { return [self initWithHeight:aSize width:aSize]; } - (id)initWithHeight:(NSUInteger)anHeight width:(NSUInteger)anWidth { self = [super init]; if (self) { ; } return self; } @end </code></pre> <p>I am getting</p> <pre><code>In file included from MAMatrix.mm:11: In file included from /usr/local/include/boost/numeric/ublas/matrix.hpp:16: In file included from /usr/local/include/boost/numeric/ublas/vector.hpp:19: In file included from /usr/local/include/boost/numeric/ublas/storage.hpp:26: In file included from /usr/local/include/boost/numeric/ublas/traits.hpp:24: In file included from /usr/local/include/boost/type_traits.hpp:35: In file included from /usr/local/include/boost/type_traits/has_operator.hpp:12: In file included from /usr/local/include/boost/type_traits/has_bit_and.hpp:43: /usr/local/include/boost/type_traits/detail/has_binary_operator.hpp:157:4: error: expected expression BOOST_STATIC_CONSTANT(bool, value = (sizeof(check(((make&lt;Lhs&gt;() BOOST_TT_TRAIT_OP ... ^ /usr/local/include/boost/config/suffix.hpp:431:72: note: instantiated from: # define BOOST_STATIC_CONSTANT(type, assignment) static const type assignment ^ /usr/local/include/boost/type_traits/detail/has_binary_operator.hpp:157:121: note: instantiated from: BOOST_STATIC_CONSTANT(bool, value = (sizeof(check(((make&lt;Lhs&gt;() BOOST_TT_TRAIT_OP make&lt;Rhs&gt;()),make&lt;has_operator&gt;())))=... ^ </code></pre> <p>In</p> <pre><code>template &lt; typename Lhs, typename Rhs &gt; struct operator_exists { static ::boost::type_traits::yes_type check(has_operator); // this version is preferred when operator exists static ::boost::type_traits::no_type check(no_operator); // this version is used otherwise BOOST_STATIC_CONSTANT(bool, value = (sizeof(check(((make&lt;Lhs&gt;() BOOST_TT_TRAIT_OP make&lt;Rhs&gt;()),make&lt;has_operator&gt;())))==sizeof(::boost::type_traits::yes_type))); }; </code></pre> <p>I think it may be a boost issue, because STL works fine in my ObjC class.</p> <p>Thanks for help.</p>
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