CODEWITHSUNDEEP
c++xcodeboost
Devin Crossman
Devin Crossman

Reputation: 7592

linking Boost library to Xcode project

I'm trying to create a project that uses the Boost library. I'm on OS X 10.9.5 (I should update that) and using Xcode 6.2. I installed boost with homebrew brew install boost and it's located in /usr/local/Cellar/boost/1.59.0. I added the path the the /usr/local/Cellar/boost/1.59.0/include to the header search path in Xcode and it seems to recognize it because the autocomplete hinting works.

In the boost documentation it mentions that some of the Boost libraries must be built before they can be used. I assume homebrew took care of that because I have a bunch of .a and .dylib files in /usr/local/Cellar/boost/1.59.0/lib

I'm still new to C++ and the Xcode build process but it seems I still need to link the compiled libraries to my project. I tried adding the path /usr/local/Cellar/boost/1.59.0/lib to my project's library search paths but I'm not sure if that is correct.

Here is the error I get when I try to build my project.

Undefined symbols for architecture x86_64:
  "boost::filesystem::detail::create_directory(boost::filesystem::path const&, boost::system::error_code*)", referenced from:
      boost::filesystem::create_directory(boost::filesystem::path const&) in main.o
  "boost::filesystem::detail::status(boost::filesystem::path const&, boost::system::error_code*)", referenced from:
      boost::filesystem::exists(boost::filesystem::path const&) in main.o
  "boost::system::system_category()", referenced from:
      ___cxx_global_var_init2 in main.o
  "boost::system::generic_category()", referenced from:
      ___cxx_global_var_init in main.o
      ___cxx_global_var_init1 in main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Is there something else I need to configure to get this to work?

Upvotes: 3

Views: 2645

Answers (1)

Eelke
Eelke

Reputation: 22043

Adding the path is correct but you also need to specify the libraries you need. On the commandline you would use -l for that in Xcode you can add them to Other Linker Flags.

The libraries you need are boost_filesystem and boost_system.

Upvotes: 3

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