Upon analyzing the setup for GTKWave and GHDL software, I noticed that there was an error within the code. Pictured to the left is what the current GitHub code looks like. Originally, line 2 within the code with the "move" command was exactly correct. The code directly mirrored the exact name of the GHDL file with all characters in the correct order. However, in the code of line 4 revolving around exporting the path to get to the GHDL folder, there was a typo with the folder name. The line of code originally read "PATH=$PATH\:/usr/local/ghdl-0.37-mcode-macosx/bin ; export PATH"
This line of code had an error because the file name was written incorrectly since "mcode" and "macosx" switched places. Since I pointed this out to Professor Lu, it has been dealt with and fixed. The picture to the left shows that both lines are matching now with the GHDL file name.