[CMake] namespace support

[Michael Wild]

On 02/02/2011 04:08 PM, Peter Kümmel wrote:
> I wanna build several targets in one CMakeLists.txt,
> because I have many simple one-file-only plugins with
> the same build rules, for instance:
> 
> include_directories(a)
> add_library(a MODULE a/a.cpp)
> 
> include_directories(b)
> add_library(b MODULE b/b.cpp)
> 
> 
> 
> The problem is that all include_directories and
> add_definitions have a file scope and are visible
> for all targets.
> 
> Is it already possible to use push/pop the scope like it
> must be done for add_subdirectory?
> 
> scope_push()
>     include_directories(a)
>     add_library(a MODULE a/a.cpp)
> scope_pop()
> 
> or
> 
> scope_enter(b)
>     include_directories(b)
>     add_library(b MODULE b/b.cpp)
> scope_leave()
> 
> or
> 
> namespace(a)
>     include_directories(a)
>     add_library(a MODULE a/a.cpp)
> endnamespace()
> 
> 
> Peter

Put a CMakeLists.txt file in a/ and b/ and do the include_directories()
and add_library() calls in there. That's the only way to have separate
include directories since there is no corresponding target property
(which admittedly would be nice to have).

Michael