What use is the .cxref configuration file?
The most obvious use is if you have a lot of command line options that you don’t want to have to enter every time that you run the program. However the .cxref file is most useful when you have a multiple directory source tree (See< Q 3.1), or when you are using an existing Makefile to build documentation. When there are various subdirectories containing source code, a .cxref file in each sub-directory can be used just containing the line '-R..' or whatever is appropriate to point cxref to the root of the source tree. This means that there is no need to keep track of which directory you are in, they all will use the correct directory to work from. If you already have a Makefile that goes through all of the source code then you may want to modify it so that it calls cxref instead of calling the C compiler. This means that there is no room to put the extra arguments to cxref on the command line. A .cxref file can contain the command line arguments so that you only need to need the argumen
