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UNITY_BUILD doesn't seem to propagate to dependent projects #56

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marthinsen opened this issue Aug 9, 2023 · 1 comment

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marthinsen commented Aug 9, 2023

From this line of code:
https://github.com/cpp-best-practices/cmake_template/blob/d19d8921771ba582824948f0cc57f849a5c6efd8/ProjectOptions.cmake#L147C3-L147C98
One can get the impression that linking to myproject_options would be sufficient to enable unity build on a project. As far as I can tell that is not correct, the UNITY_BUILD property seems to not propagate to dependent projects. Or am I missing something here?

If one doesn't want set UNITY_BUILD globally, l guess one have to set the property for each target explicitly...

The text was updated successfully, but these errors were encountered:

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ClausKlein commented Aug 27, 2023 •

edited

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UNITY_BUILD does not work in this way, see CMAKE_UNITY_BUILD

But in generell it should be used for libraries because it may reduce the build time dramatically.

see #63 for example

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