Programming :: How To Write Makefiles

I've been working at learning how to write makefiles and I'm a bit stuck.

I've got a fairly simple project that will eventually be a framework for TCP/IP Communications in evolutionary algorithms that I've been using Eclipse to develop.

For personal development I want to learn how to write makefiles by hand but have gotten kind of stuck

Here is the makefile as it stands now:

Code:

Port and Mailbox are a virtual class and a template class respectively.

I get these errors when I run make:

Code:

So for some reason every single function in the Connection class has been defined multiple times. I assume because it's included as a dependency for multiple targets, but I've seen this in numerous examples that apparently work.

Everything in libpthread is undefined because I'm not linking in the library. I've tried adding the library options to the LDFLAGS variable but that doesn't seem to work either.