Not all parts of the source code are available under the same license. The individual source code files include the applicable license. Doing this is fine for c

Not all parts of the source code are available under the same license. The individual source code files include the applicable license. Doing this is fine for compatible licenses and not unusual for projects, though it can make certain things more complicated. Here's an example of what GNU says about GPL compatibility[1] - roughly meaning the whole work is published as GPL. [1]: https://www.gnu.org/licenses/gpl-faq.html#WhatDoesCompatMean https://www.gnu.org/licenses/gpl-faq.html#WhatDoesCompatMean