Hi!<div><br></div><div>When I try to use the&nbsp;<span class="Apple-style-span" style="border-collapse: collapse; white-space: pre; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px; ">parse_config_file() function from the program_options library I get a link error saying (built on OS X 10.5):</span></div>
<div><span class="Apple-style-span" style="border-collapse: collapse; white-space: pre; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;"><br></span></div><div><span class="Apple-style-span" style="border-collapse: collapse; white-space: pre; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;">Undefined symbols:
  &quot;boost::program_options::basic_parsed_options&lt;char&gt; boost::program_options::parse_config_file&lt;char&gt;(std::basic_istream&lt;char, std::char_traits&lt;char&gt; &gt;&amp;, boost::program_options::options_description const&amp;, bool)&quot;, referenced from:
      _main in main.cc.o
ld: symbol(s) not found
</span></div><div><span class="Apple-style-span" style="border-collapse: collapse; white-space: pre; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;"><br></span></div><div><span class="Apple-style-span" style="border-collapse: collapse; white-space: pre; -webkit-border-horizontal-spacing: 2px; -webkit-border-vertical-spacing: 2px;">Taking a closer look at the code I discovered that the function is declared as a template in boost/program_options/parsers.hpp but is defined in <span class="Apple-style-span" style="border-collapse: separate; white-space: normal; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; ">boost/libs/program_options/src/parsers.cpp.</span></span></div>
<div>Is this really valid? I&#39;ve thought that templated functions need to be defined along with the declaration as the template arguments need to be evaluated at compile time.</div><div>Or am I missing something?</div>
<div><br></div><div>Thanks in advance!</div><div>Arthur</div>