[CMake] One library with multiple sub-directories

[Brad King]

Bradley Lowekamp wrote:
> Hello,
>     I am trying to generate a single library from multiple source 
> sub-directories where in the subdirectories files may have the same 
> name. Currently I have been making sure that each file had different 
> names, but I can't be doing this any more. The way I have it currently 
> set up is basically as follows:
> 
> directory structure:
>     /-
>     -/foo
>         default.cpp
>     -/bar
>         default.cpp
> 
> top level cmake:
>     SUBDIRS( foo)
>     SUBDIRS(bar)
>     SET (MY_LIB_SRC ${FOO_SRC} ${BAR_SRC})
>     ADD_LIBRARIES(my ${MY_LIB_SRC}

Just leave out the SUBDIRS and build it all from the top:

ADD_LIBRARIES(my foo/default.cpp bar/default.cpp)

The object files will be built with the proper relative paths.

-Brad