# CMake 3.19.6 does not set Boost\_LIBRARY\_DIR\_RELEASE

**URL:** https://discourse.cmake.org/t/cmake-3-19-6-does-not-set-boost-library-dir-release/2927
**Category:** Usage
**Tags:** os:linux
**Created:** [March 10, 2021, 11:48am UTC](https://discourse.cmake.org/t/cmake-3-19-6-does-not-set-boost-library-dir-release/2927 "2021-03-10T11:48:44Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![nicolamori](https://discourse.cmake.org/user_avatar/discourse.cmake.org/nicolamori/32/1278_2.png) [@nicolamori](https://discourse.cmake.org/u/nicolamori)
#### Post date: [March 10, 2021, 11:48am UTC](https://discourse.cmake.org/t/cmake-3-19-6-does-not-set-boost-library-dir-release/2927/1 "2021-03-10T11:48:45Z")

</div>

I’m using CMake 3.19.6 and Boost 1.71 on Ubuntu 20.04. I noticed that in this setup the `FindBoost.cmake` takes advantage of the CMake configuration files shipped by Boost to configure the Boost usage. Then the `_boost_set_legacy_variables_from_config` is called, however this macro does not set all the legacy variables like `Boost_LIBRARY_DIR_RELEASE`, and this breaks my project’s configuration.

I checked the documentation at the beginning of `FindBoost.cmake` but if I’m correct there’s no mention about the fact that when using the Boost CMake config files the `Boost_LIBRARY_DIR_RELEASE` will not be set, so I think that the current behavior is not correct.

Can anyone please comment on this? Thanks.