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copied!<p>Export is only support by the EDG frontend, comercially only available in the Comeau compiler as far as I know.</p> <p>Export doesn't eliminate the need for source disclosure, nor does it reduce compile dependencies, while it requires a massive effort from compiler builders. </p> <p>So Herb Sutter himself asked compiler builders to 'forget about' export. As the time investment needed would be better spend elsewhere... so I don't think export will ever be implemented by other compilers after they saw how long it took, and how little was gained.</p> <p>The paper is called "Why we can't afford export", it's listed on <a href="http://gotw.ca/publications" rel="nofollow noreferrer">Sutters blog</a> but no pdf there (a quick google should turn it up though), it's six years old now, I suppose they all listened and never bothered :)</p> <p>Many people use two header files (e.g. <code>.hpp</code> and <code>.ipp</code>), one with only the declaration, and one with the definitions, then it's simply a matter of including one in the other.</p> <p>foo.hpp</p> <pre><code>#ifndef MY_TEMPLATES_HPP #define MY_TEMPLATES_HPP template< class T > void foo(T & t); #include "foo.ipp" #endif </code></pre> <p>foo.ipp</p> <pre><code>#ifdef MY_TEMPLATES_IPP nonsense here, that will generate compiler error #else #define MY_TEMPLATES_IPP template< class T > void foo(T & t) { ... // long function } #endif </code></pre> <p>This only gains some clarity of course, nothing really changes compared to simply inlining everything in one header file.</p>

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