Issues with find_package(armadillo REQUIRED) when compiling on Ubuntu

[config-i1]

Hi,

I'm trying to compile a python library that uses Armadillo on Ubuntu, but when I do "pip install -e .", I get error:

CMake Error at CMakeLists.txt:17 (find_package):
By not providing "Findarmadillo.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"armadillo", but CMake did not find one.

    Could not find a package configuration file provided by "armadillo" with
    any of the following names:
  
      armadilloConfig.cmake
      armadillo-config.cmake
  
    Add the installation prefix of "armadillo" to CMAKE_PREFIX_PATH or set
    "armadillo_DIR" to a directory containing one of the above files.  If
    "armadillo" provides a separate development package or SDK, be sure it has
    been installed.

Armadillo is installed in /usr/lib, and the only option for me to make cmake see it, is to manually include the path in CMakeLists.txt. This is not good, because if I was to compile it on a different system the path would not be valid. But even when I tell it the path, it somehow compiles without LAPACK (I have it installed as well), and the code doesn't work. I have a feeling that this is because scikit-build installs its own cmake which is oblivious of what is installed on my OS, but I am not sure what I can do about that. Do you have any suggestions?

Just in case, here is the CMakeLists.txt file: https://github.com/config-i1/smooth/blob/Python/python/CMakeLists.txt Also, just FYI, I work on Ubuntu 22.04.3 LTS.