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I have built boost 1.44 on CentOS 5.5 using the gcc that is part of CentOS 5.5. All targets built fine. However trying to build a simple cpp file with nothing but an include of boost filesystem results in this linking error (3 times):
undefined reference to `boost::system::generic_category()'
I cannot see why this would happen. The lib is build, it can be seen, and yet I've seen this error discussed in google searches for versions of boost going back quite a while (when built with gcc). Anyone have any suggestions?
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The Boost Filesystem Library provides portable facilities to query and manipulate paths, files, and directories. The motivation for the library is the need to be able to perform portable script-like operations from within C++ programs.
Unlike a large portion of the Boost ecosystem, boost::filesystem is not header-only. However, integration into a project was quite simple, and the functionality it provided was impressive.
Boost provides free peer-reviewed portable C++ source libraries. We emphasize libraries that work well with the C++ Standard Library. Boost libraries are intended to be widely useful, and usable across a broad spectrum of applications.
Boost is meant to build on top of STL and many of the libraries are slated to become part of the standard library eventually. Boost libraries are generally less mature and less standard than STL.
Add -lboost_system to your LDFLAGS when linking your simple app.
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