COPYING.README
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COPYING.README
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			Eigen is primarily MPL2 licensed. See COPYING.MPL2 and these links:
			http://www.mozilla.org/MPL/2.0/
			http://www.mozilla.org/MPL/2.0/FAQ.html

			Some files contain third-party code under BSD or LGPL licenses, whence the other
			COPYING.* files here.

			All the LGPL code is either LGPL 2.1-only, or LGPL 2.1-or-later.
			For this reason, the COPYING.LGPL file contains the LGPL 2.1 text.

			If you want to guarantee that the Eigen code that you are #including is licensed
			under the MPL2 and possibly more permissive licenses (like BSD), #define this
			preprocessor symbol:
			EIGEN_MPL2_ONLY
			For example, with most compilers, you could add this to your project CXXFLAGS:
			-DEIGEN_MPL2_ONLY
			This will cause a compilation error to be generated if you #include any code that is
			LGPL licensed.