Lazarus Can't find unit system used by fcllaz

Lazarus Can't find unit system used by fcllaz

You typically see this error message following a fresh install or when trying to build FreePascal and Lazarus from source code. The error means literally that the pre-compiled units of FreePascal for one reason or another are simply not being found by the compiler. There are generally 2 sources for these errors -- left over remnants from old install and environment problems.

Program Placement

There are currently at least 2 views of where FreePascal and Lazarus are to be installed on Linux, Unix and similar systems. The first is a more security conscious thought pattern where the executables are placed in either /root/bin or /usr/bin, libraries are placed in /root/lib or /usr/lib, shared files are placed in /usr/share, and configuration files in /home/username. The other favors control by the user by placing executables in /home/username/FreePascal, libraries and pre-compiled units in /home/username/FreePascal/lib/fpc/3.0.0/units and configuration files in /home/username. The word 'username' is typically the users name or handle. FreePascal could be a higher directory with lower directories for fpc-3.0.0 and lazarus. I follow this latter paradigm keeping all of my FreePascal files in one convenient location.

Finding Dangling Files

If you have had previous installations of FreePascal or Lazarus