[CMake] How to make executable depend on pre-existing controlfile?

[Trevor Kellaway]

i,

> > I'm try to get my link to depend on a pre-existing file 
> that contains 
> > linker segment information "link.prm".
> >
> > [snip]

> I guess you also have a custom command which generates this file ?
> Are you sure it's ${CMAKE_SOURCE_DIR}/link.prm and not 
> ${CMAKE_BINARY_DIR}/link.prm ?

Nope, this is a hand crafted file (not generated) that contains
information about the embedded target memory layout etc. that the
embedded linker needs to read. So, "${CMAKE_SOURCE_DIR}/link.prm"
definitely exists.

> Is this cmake >= 2.4.3 ?

Latest and greatest "cmake-2.4.6-win32-x86"

- TrevK