Hi Nicolas,<div><br></div><div>It&#39;s my first time using Boost, but i think you missed the build steps. The Boost library is header-only, except this parts:</div><div><br></div><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><a href="http://www.boost.org/doc/libs/1_46_0/more/getting_started/unix-variants.html#header-only-libraries">http://www.boost.org/doc/libs/1_46_0/more/getting_started/unix-variants.html#header-only-libraries</a></div>
<div><br></div><div><a href="http://www.boost.org/doc/libs/1_46_0/more/getting_started/unix-variants.html#header-only-libraries"></a>For example, i&#39;m using Boost.MPI and Boost.Random, my bootstrap.sh call is something like:</div>
<div><br></div><div>./bootstrap.sh --prefix=/your/desired/path --with-libraries=mpi,random</div><div><br></div><div>I think you need to pass Filesystem to bootstrap.sh before anything. Also is a good idea read it&#39;s docs, because maybe you will need to edit some specific configuration files like i did in Boost.MPI.</div>
<div><br></div><div>Regards,</div><div>Júlio.<br><br><div class="gmail_quote">2011/2/23 Nicolas Chaumont <span dir="ltr">&lt;<a href="mailto:nicolas.chaumont@gmail.com">nicolas.chaumont@gmail.com</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>Hello and thank you for reign my post,</div><div><br></div><div>When I want to compile the program:</div><div><br></div><div>#include &quot;boost/filesystem.hpp&quot;</div><div><br></div><div>int main(int argc, char** argv)</div>

<div>{</div><div>    boost::filesystem::path path;</div><div>    boost::filesystem::exists(path); //&lt;=This is the line that causes the error</div><div><br></div><div>    return 0;</div><div>}</div><div><br></div><div>
I get the following error:</div>
<div><br></div><div>&quot;boost::filesystem2::detail::status_api(std::basic_string&lt;char, std::char_traits</div><div>&lt;char&gt;, std::allocator&lt;char&gt; &gt; const&amp;, boost::system::error_code&amp;)&quot;, </div>

<div><br></div><div>referenced from:</div><div><br></div><div>boost::enable_if&lt;boost::filesystem2::is_basic_path&lt;boost::filesystem2::basic_pat</div><div>h&lt;std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt;, </div>

<div>boost::filesystem2::path_traits&gt; &gt;, bool&gt;::type boost::filesystem2::exists&lt;</div><div>boost::filesystem2::basic_path&lt;std::basic_string&lt;char, std::char_traits&lt;char&gt;, </div><div>std::allocator&lt;char&gt; &gt;, boost::filesystem2::path_traits&gt; &gt;(</div>

<div>boost::filesystem2::basic_path&lt;std::basic_string&lt;char, std::char_traits&lt;char&gt;, </div><div>std::allocator&lt;char&gt; &gt;, boost::filesystem2::path_traits&gt; const&amp;)in main.o</div><div><br></div><div>

ld: symbol(s) not found</div><div><br></div><div>collect2: ld returned 1 exit status</div><div><br></div><div>I&#39;m using XCode 3.2.4, Darwin GCC 4.2 with the Mac OSX 10.6 SDK. The program </div><div>links against the libboost_system.a and libboost_filesystem.a libraries from </div>

<div>Boost 1.45, both compiled with the same compiler.</div><div>Boost was compiled in the most straight forward way, i.e. from the boost root </div><div>directory, I invoke the only two commands:</div><div><br></div><div>

./bootstrap.sh</div><div><br></div><div>make</div><div><br></div><div>Note that I haven&#39;t installed the library in /usr/local.</div><div><br></div><div>Since the example compiles fine with the problematic line commented out, </div>

<div>I assume the include path is correct, and that the linker found </div><div>libboost_system.a (in stage/lib). I also made sure there are no other versions </div><div>of boost present on my computer to eliminate the possibility of a header/library </div>

<div>version mismatch.</div><div><br></div><div>Also, I&#39;ve tried to compile with different architectures, both in debug and </div><div>release mode. I couldn&#39;t remove this error.</div><div><br></div><div>I looked for the missing symbol in both libboost_system.a and </div>

<div>libboost_filesystem.a (nm -m &lt;library name&gt; | c++filt), and the filesystem2 </div><div>namespace doesn&#39;t exist.</div><div><br></div><div>My understanding is that the boost::filesystem2 namespace was never generated </div>

<div>when I compiled the libraries, but for some reason is generated when I compile </div><div>my little program. So I suppose there might be a definition that triggers or </div><div>prevents this namespace from being created.</div>

<div><br></div><div>Anyone has an idea about what should I do to remove my error?</div><div><br></div><div>Thank you in advance,</div><div><br></div><div>Regards,</div><div>Nicolas</div><font color="#888888"><div><br></div>

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