[CMake] Change the default output path in Visual Studio

[Petr Bena]

I got to test it now, it doesn't seem to work, it changes the path,
but instead of ROOT/Debug/extensions/library_here.dll it puts it to
ROOT/extensions/Debug/library_here.dll which is different, but still
not what I wanted.

On Mon, Mar 30, 2015 at 3:46 PM, Nils Gladitz <nilsgladitz at gmail.com> wrote:
> On 03/30/2015 03:36 PM, Petr Bena wrote:
>>
>> Hi Nils,
>>
>> Great! Could you please give me some mininal example and perhaps add
>> it to documentation page which is now kind of vague? From what is
>> written there, I suppose that this variable changes the runtime output
>> directory, but for all targets since it's set and until it's changed?
>>
>> eg. if I have huge CMakeLists.txt file that includes other CMake files
>> using add_subdirectory I would wrap all add_subdirectory directives
>> with change to this variable? like:
>>
>> RUNTIME_OUTPUT_DIRECTORY("extensions/")
>> add_subdirectory("extension/ext1")
>> # Now I should reset it back to what it was?
>> RUNTIME_OUTPUT_DIRECTORY("WHAT DO I PUT HERE??")
>
>
> CMAKE_RUNTIME_OUTPUT_DIRECTORY is a variable.
>
> You can set it with e.g.:
>   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
>
> You could unset it again with e.g.
>   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY)
>
> Regular cmake variables are inherited into sub-directories.
>
> CMAKE_RUNTIME_OUTPUT_DIRECTORY is read at every add_executable() and
> add_library() call to initialize the RUNTIME_OUTPUT_DIRECTORY_PROPERTY [1]
> of the newly created target.
>
> So to revise your example the following should work (assuming the
> sub-directory itself does not override the defaults):
>
>   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/extensions)
>
>   add_subdirectory(extension/ext1)
>
>   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY)
>
> Nils
>
> [1] www.cmake.org/cmake/help/v3.2/prop_tgt/RUNTIME_OUTPUT_DIRECTORY.html
>
>