I just did a fresh install of Lazarus and it says the fpc.cfg file isn't found. These are the files I used to install lazarus with:

fpc-src_2.6.2-0_amd64.deb
fpc_2.6.2-0_amd64.deb
lazarus_1.0.10-0_amd64.

I ran a search for fpc.cfg and ffound these files:

/home/terry/Downloads/fpc.cfg
/etc/fpc.cfg

ls -la /etc/fpc.cfg
-rw-r--r-- 1 root root 7799 May 14 08:09 /etc/fpc.cfg

Where does the file need to be inorder for Lazarus to find it?

This is a Linux Mint 19.2 desktop using Mate and the processor is a i7- 8700, 16gb of ram.

Terry

You are aware that fpc is and ?

Seems like you are installing very old versions 2.6.2 and 1.0.10 respectively...

"Terry A. Haimann wrote

Where does the file need to be inorder for Lazarus to find it?

Copy it from /etc into your home dir as follows:
cp /etc/fpc.cfg ~/.fpc.cfg
Notice the period that makes it a hidden file.
Lazarus looks for it in several places and this ios one of them.

.. get a newer lazarus from:

https://www.lazarus-ide.org/index.php?page=downloads