sudo emerge --sync

Quill requires some development libraries and tools. You can install them using the following command:

   sudo emerge dev-libs/boost dev-util/cmake sys-devel/gcc

It's a good practice to keep your source code separate from your build files.

   mkdir ~/quill-build
   cd ~/quill-build

You can get the latest version of Quill from its GitHub repository.

   git clone https://github.com/quillcpp/quill.git
   cd quill

Use CMake to configure and build the project.

   cmake -Bbuild -H.
   make -C build

If you want to install Quill system-wide, you can use `make install`.

   sudo make -C build install

You can check if Quill is installed correctly by running a simple example or checking for the presence of the library files.

That's it! You should now have Quill installed on your Gentoo system. If you encounter any issues, refer to the official Quill documentation or seek help from the Gentoo community forums.