[CMake] Question regarding project structure

[Michael Wild]

On 16. Sep, 2010, at 17:13 , David Aldrich wrote:

> Hi David
> 
>> Something like this should work:
> 
>> cmake_minimum_required(VERSION 2.8)
>> project(MyExe)
> 
>> add_subdirectory(../Kernel Kernel)
>> add_subdirectory(../DynLibs DynLibs)
> 
>> add_executable(MyExe exe.cxx)
>> target_link_libraries(MyExe Kernel)
> 
> I have a problem with add_executable(). Our Kernel library includes main.cpp, so all our existing linker command does is to take libKernel.a and make it an executable:
> 
> g++ -o _gnuRelease/MyExe -ldl -Wl,-whole-archive,-export-dynamic ../Kernel/_gnuRelease/libKernel.a
> 
> So I have no source files to specify. Does 'exe.cxx' (above) have special properties or is it just a placeholder? If the latter, how can I build an executable with no source files specified?
> 
> BR
> 
> David

There is none. The only way to do that is create an empty dummy file (using e.g. a combination of file(WRITE) and configure_file() to prevent recompiling after every CMake run).

--
There is always a well-known solution to every human problem -- neat, plausible, and wrong.
H. L. Mencken

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