Thanks for your time replying guys.
You are both correct, hardly surprising, what was happening was that I was pointing Cmake to the wrong source directory, BUT ... the reason why is that there was no CMakeLists.txt in the correct directory.... and from there I let myself get confused!!!
Thanks, Warner, for your explanation about the directories, and cmake etc.. I understand now.
I used KDESVN to down load the svn version. I will try a few things and get back to you if I find any problems.
Can I ask one more thing?
I found the icons folder and contents in the source code. But what happens to these picture files when freecad is installed in my system?
I search my file system from /, assuming that I would find a directory/ies somewhere with icon files, but it didn't, except the ones associated with some of the modules that have their own icon files, like Arch.
I read freecad's web site's instructions related to creating icons. I will have a go at making some, but unless I missed it somewhere, I can't see any instructions for how to load these into freecad to try them out, i.e. see what they look like in situ/to scale etc..
I worked out how to add an existing icon from the selection offered by Freecad, to my macro and add it to my new custom tool bar. But not an icon which I may have created myself/or found elsewhere.
What I was thinking I would initially do is make an icon and then just associate it with my macro in my custom tool bar, and then I can see what it looks like in situ/to scale etc.. Unless there is a better way?