[Boost-bugs] [Boost C++ Libraries] #10038: filesystem library with -std=c++11 causes undefined reference to copy_file

Subject: [Boost-bugs] [Boost C++ Libraries] #10038: filesystem library with -std=c++11 causes undefined reference to copy_file
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-05-11 03:57:07

#10038: filesystem library with -std=c++11 causes undefined reference to copy_file
--------------------------------------------+------------------------
 Reporter:  jim.king@…                      |      Owner:  bemandawes
     Type:  Bugs                            |     Status:  new
Milestone:  To Be Determined                |  Component:  filesystem
  Version:  Boost 1.56.0                    |   Severity:  Problem
 Keywords:  filesystem copy_file undefined  |
--------------------------------------------+------------------------
 {{{
 #include <boost/filesystem.hpp>

 int main(void)
 {
     boost::filesystem::copy_file("a", "b");
     return 0;
 }
 }}}

 Using either g++ 4.8.1 or clang++ 3.5 when I enable the compiler option
 -std=c++11, the boost::filesystem::detail::copy_file cannot be found in
 the library:

 {{{
 root_at_dvm-3:/tmp# g++ --version
 g++ (Ubuntu 4.8.1-2ubuntu1~12.04) 4.8.1

 # g++ -g -I/usr/include/boost-1_56 fscopy.cpp -o fscopy
 -lboost_filesystem-clang35-mt-d-1_56 -lboost_system-clang35-mt-d-1_56

 # g++ -std=c++11 -g -I/usr/include/boost-1_56 fscopy.cpp -o fscopy
 -lboost_filesystem-clang35-mt-d-1_56 -lboost_system-clang35-mt-d-1_56
 /usr/include/boost-1_56/boost/filesystem/operations.hpp:385: error:
 undefined reference to
 'boost::filesystem::detail::copy_file(boost::filesystem::path const&,
 boost::filesystem::path const&, boost::filesystem::copy_option,
 boost::system::error_code*)'
 collect2: error: ld returned 1 exit status

 # /usr/bin/clang++ -g -I/usr/include/boost-1_56 fscopy.cpp -o fscopy
 -lboost_filesystem-clang35-mt-d-1_56 -lboost_system-clang35-mt-d-1_56

 # /usr/bin/clang++ -std=c++11 -g -I/usr/include/boost-1_56 fscopy.cpp -o
 fscopy -lboost_filesystem-clang35-mt-d-1_56 -lboost_system-
 clang35-mt-d-1_56
 /usr/include/boost-1_56/boost/filesystem/operations.hpp:385: error:
 undefined reference to
 'boost::filesystem::detail::copy_file(boost::filesystem::path const&,
 boost::filesystem::path const&, boost::filesystem::copy_option,
 boost::system::error_code*)'
 clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 }}}

 The boost 1.56 libraries were built with clang-3.5 on Ubuntu 12.04.2 LTS
 with libstdc++ from g++-4.8.1 installed.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10038>
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