Just trying to learn how to compile and configure so I need to know what this line -> -DCMAKE_INSTALL_PREFIX:PATH= <- means? What is it referring to?

I do understand -MAKE_INSTALL what does the rest mean and refer to?

Thanks

You unpack the tarball somewhere. But you want it installed somewhere else.

So, you run ./configure. When that is done, inspect the contents of the top-level Makefile. If you specified the PREFIX in the ./configure step, you will see it in the Makefile as PREFIX=/path/to/installation/directory (something like /usr/, /usr/local, /opt, or something else). The prefix is the toplevel directory in which to install, with bits and pieces going to /etc (config files), or /usr/bin or /usr/local/bin, etc.

You can edit the top-level Makefile to change the PREFIX, LIBDIR, BINDIR, etc, or just reconfigure with the appropriate directories specified in the ./configure command.

For more info on what you can add to the ./configure command, cd to the directory in which you unpacked the tarball, and do ./configure -help. You will see a list of options that you can add to the command.

thanks, bigrigdriver, good and clear will print your explanation.