[Cmake] Custom Commands

[Kevin Wright]

Hi All,

I'm just taking a look into using CMake here, so I'm brand new, please 
forgive any stupid questions.

I'm trying to set up a sub-directory where first a source file is generated 
using an external utility, then that source file (along with other static 
ones) are to be built into a library.

So, I've used ADD_CUSTOM_COMMAND to create a target that will build the 
extra source code, but I can't figure out how to incorporate that source 
file into the library.  I tried adding the output of the ADD_CUSTOM_COMMAND 
to the source list of ADD_LIBRARY, but it complains during configuration 
that the source file didn't exist.

Thanks any help,
Kevin.