[CMake] Plugins (Modules) on Windows

[Filipe Sousa]

bpwlist at cox.net wrote:
> Hi All,
> 
> I have a project in which I build a main application and several plugins (modules).  My main cmake file look something like this:
> 
> ADD_SUBDIRECTORY(MainApp)
> ADD_SUBDIRECTORY(plugins/Plugin1)
> ADD_SUBDIRECTORY(plugins/Plugin2)
> ...
> 
> Plugin1 cmakes file looks like this:
> PROJECT(Plugin1)
> INCLUDE_DIRECTORIES(
>     .
>     ${CMAKE_SOURCE_DIR}/MyApp
> )
> 
> SET (SRCS foo.cpp)
> 
> ADD_LIBRARY(Plugin1 MODULE ${SRCS})
> 
> MyApp's Cmake file looks like this:
> 
> PROJECT(MyApp)
> SET (SRCS bar.cpp)
> ADD_EXECUTABLE(MyApp ${SRCS}
> 
> This works great on linux.  But under windows I get several unresolved symbols.  Under linux the symbols are resolved when the module is loaded by MyApp, under windows the symbols are trying to be resolved by the linker.  I can fix this in Visual Studio by adding MyApp.lib to the list of dependencies.  MyApp.lib is generated as a side effect of VS building the executable.   When I try add MyApp.lib under cmake it appears to get confused.  (since MyApp is a executable not a library)  What is the right way of doing this?
> 
> Thanks,
> 
> Bryan Walsh

Why don't you move the common code to a separated library? Then you 
could link your application and the plugins with that library.

-- Filipe Sousa