Configuration Options for CMake

Building and running the tests provided by Hana may be influenced by a number of configuration flags. These would be given as arguments to cmake, prefixed with -D, followed by the variable name, an equal sign, and the value. For instance,

cmake .. -DCMAKE_CXX_COMPILER=clang++

In addition to the following table, a full list of variables may be obtained with cmake-gui.

CMake Variables	Values	Default	Description
CMAKE_CXX_COMPILER	path	auto	Path to your C++ compiler of choice
CMAKE_CXX_FLAGS	string	unset	Additional user-defined flags for the C++ compiler
BOOST_HANA_ENABLE_CONCEPT_CHECKS	ON / OFF	ON	Enable concept checking in the interface methods.
BOOST_HANA_ENABLE_EXCEPTIONS	ON / OFF	ON	Build tests with exceptions enabled.
BOOST_HANA_ENABLE_MEMCHECK	ON / OFF	OFF	Run the unit tests and examples under Valgrind, if it is found.
BOOST_HANA_ENABLE_STRING_UDL	ON / OFF	ON	Enable GNU extension for string literal operator templates
BOOST_HANA_ENABLE_WERROR	ON / OFF	OFF	Fail and stop if a warning is triggered.
BOOST_ROOT	path	auto	Path to full boost installation, only required if detection fails.
MPL11_INCLUDE_DIR	path	auto	Path to MPL11 include directory. When set, this will be used as-is.
MPL11_CLONE_IF_MISSING	ON / OFF	OFF	If MPL11 include directory can't be found and this is set to true, the MPL11 project will be cloned locally.
Meta_INCLUDE_DIR	path	auto	Path to Meta include directory. When set, this will be used as-is.
Meta_CLONE_IF_MISSING	ON / OFF	OFF	If Meta include directory can't be found and this is set to true, the MPL11 project will be cloned locally.
Valgrind_EXECUTABLE	path	auto	Path to the Valgrind executable.