[Solved] Trying to build for the first time in a while, getting a cmake error (Debian)

[AzimuthFE]

When I try to run cmake I get:

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CMake Error at CMakeLists.txt:151 (find_package):
  Could not find a configuration file for package "Qt5Core" that is
  compatible with requested version "5.12".

  The following configuration files were considered but not accepted:

    /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfig.cmake, version: 5.11.3
    /lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfig.cmake, version: 5.11.3

Trying to upgrade qt5-default gives:

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qt5-default is already installed at the latest version (5.11.3+dfsg1-1+deb10u3), so it will not be upgraded

I am unsure how to proceed?

[AnyOldName3]

You're probably going to have to build Qt yourself or install a PPA/testing version. Debian is so opposed to regressions that they consider oldest supported LTS build as dangerously close to the bleeding edge and won't provide it.

[AzimuthFE]

Cool. At least I know now. I built it in a folder other than /bin or /usr/bin. How do I point cmake to the right folder?

Edit: nvm I figured it out. Thanks for your help. For anyone else who has qt in a non standard folder you need to add -DCMAKE_PREFIX_PATH="/path/to/qt/".