Backgrounds > Open source licenses > NLopt (without Luksan) license

NLopt combines several free/open-source nonlinear optimization

libraries by various authors. See the COPYING, COPYRIGHT, and README

files in the subdirectories for the original copyright and licensing

information of these packages.

The compiled NLopt library, i.e. the combined work of all of the

included optimization routines, is licensed under the conjunction of

all of these licensing terms. Currently, the most restrictive terms

are for the code in the "luksan" directory, which is licensed under

the GNU Lesser General Public License (GNU LGPL), version 2.1 or

later (see luksan/COPYRIGHT).

That means that the compiled NLopt library is governed by the terms of

the LGPL.

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Other portions of NLopt, including any modifications to the abovementioned

packages, are licensed under the standard "MIT License:"

Permission is hereby granted, free of charge, to any person obtaining

a copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sublicense, and/or sell copies of the Software, and to

permit persons to whom the Software is furnished to do so, subject to

the following conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.