Hi Nicolas, It's my first time using Boost, but i think you missed the build steps. The Boost library is header-only, except this parts: http://www.boost.org/doc/libs/1_46_0/more/getting_started/unix-variants.html... <http://www.boost.org/doc/libs/1_46_0/more/getting_started/unix-variants.html#header-only-libraries>For example, i'm using Boost.MPI and Boost.Random, my bootstrap.sh call is something like: ./bootstrap.sh --prefix=/your/desired/path --with-libraries=mpi,random I think you need to pass Filesystem to bootstrap.sh before anything. Also is a good idea read it's docs, because maybe you will need to edit some specific configuration files like i did in Boost.MPI. Regards, Júlio. 2011/2/23 Nicolas Chaumont <nicolas.chaumont@gmail.com>
Hello and thank you for reign my post,
When I want to compile the program:
#include "boost/filesystem.hpp"
int main(int argc, char** argv) { boost::filesystem::path path; boost::filesystem::exists(path); //<=This is the line that causes the error
return 0; }
I get the following error:
"boost::filesystem2::detail::status_api(std::basic_string<char, std::char_traits <char>, std::allocator<char> > const&, boost::system::error_code&)",
referenced from:
boost::enable_if<boost::filesystem2::is_basic_path<boost::filesystem2::basic_pat h<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem2::path_traits> >, bool>::type boost::filesystem2::exists< boost::filesystem2::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem2::path_traits> >( boost::filesystem2::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem2::path_traits> const&)in main.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
I'm using XCode 3.2.4, Darwin GCC 4.2 with the Mac OSX 10.6 SDK. The program links against the libboost_system.a and libboost_filesystem.a libraries from Boost 1.45, both compiled with the same compiler. Boost was compiled in the most straight forward way, i.e. from the boost root directory, I invoke the only two commands:
./bootstrap.sh
make
Note that I haven't installed the library in /usr/local.
Since the example compiles fine with the problematic line commented out, I assume the include path is correct, and that the linker found libboost_system.a (in stage/lib). I also made sure there are no other versions of boost present on my computer to eliminate the possibility of a header/library version mismatch.
Also, I've tried to compile with different architectures, both in debug and release mode. I couldn't remove this error.
I looked for the missing symbol in both libboost_system.a and libboost_filesystem.a (nm -m <library name> | c++filt), and the filesystem2 namespace doesn't exist.
My understanding is that the boost::filesystem2 namespace was never generated when I compiled the libraries, but for some reason is generated when I compile my little program. So I suppose there might be a definition that triggers or prevents this namespace from being created.
Anyone has an idea about what should I do to remove my error?
Thank you in advance,
Regards, Nicolas
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