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== System installation ==
This library is header only. So you can either copy `include/cxxopts.hpp` to `/usr/include` or `/usr/local/include`, or add `include` to your search path.
== Building the examples and tests ==
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It is preferable to build out of source. Make a build directory somewhere, and then
do the following, where `${CXXOPTS_DIR}` is the path that you checked out `cxxopts`
to:
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cmake ${CXXOPTS_DIR}
make
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You can use another build tool, such as ninja.
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cmake -G Ninja ${CXXOPTS_DIR}
ninja
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To run the tests, you have to configure `cxxopts` with another flag:
cmake -D CXXOPTS_BUILD_TESTS=On ${CXXOPTS_DIR}
make
make test
