title: Environment variable to configure the location of the cpp source files
body: <p>I am writing a cpp library for myself and I have put the deader files in a folder <code>&lt;root&gt;/include</code> and the cpp files in <code>&lt;root&gt;/src</code> folder. To add my include path to the environment, I have appended <code>&lt;root&gt;/include</code> to <code>CPLUS_INCLUDE_PATH</code>. Now, the problem I am facing is that I am getting an error during the linking step because the linker is unable to find the implementation of my class. Is there any environment variable where I can mention this like the way I have done for the header files?</p>