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Eigen is primarily MPL2 licensed. See COPYING.MPL2 and these links: |
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http://www.mozilla.org/MPL/2.0/ |
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http://www.mozilla.org/MPL/2.0/FAQ.html |
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Some files contain third-party code under BSD or LGPL licenses, whence the other |
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COPYING.* files here. |
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All the LGPL code is either LGPL 2.1-only, or LGPL 2.1-or-later. |
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For this reason, the COPYING.LGPL file contains the LGPL 2.1 text. |
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If you want to guarantee that the Eigen code that you are |
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under the MPL2 and possibly more permissive licenses (like BSD), |
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preprocessor symbol: |
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EIGEN_MPL2_ONLY |
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For example, with most compilers, you could add this to your project CXXFLAGS: |
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-DEIGEN_MPL2_ONLY |
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This will cause a compilation error to be generated if you |
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LGPL licensed. |
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