[CMake] Circular Dependancy?

[Eric Noulard]

2007/6/5, Mike Jackson <imikejackson at gmail.com>:
> When I try as suggested I get the following error:
>
> make -C /Users/mjackson/Task_7/MXA_Workspace/PFImport/Build all
> CMake Error: Error in cmake code at
> /Users/mjackson/Task_7/MXA_Workspace/PFImport/CMakeLists.txt:23:
> ADD_SUBDIRECTORY not given a binary directory but the given source
> directory "/Users/mjackson/Task_7/MXA_Workspace/MXADataModel" is not
> a subdirectory of "/Users/mjackson/Task_7/MXA_Workspace/PFImport".
> When specifying an out-of-tree source a binary directory must be
> explicitly specified.
> Current CMake stack: /Users/mjackson/Task_7/MXA_Workspace/PFImport/
> CMakeLists.txt;/usr/local/share/cmake-2.4/Modules/
> CMakeCInformation.cmake;/usr/local/share/cmake-2.4/Modules/
> CMakeCXXInformation.cmake
> -- Configuring done
> make: *** [cmake_check_build_system] Error 255

The CMake error message is right indeed.

Your "MXADataModel" is not a  subdirectory
of "PFImport"

In CMake handled project one usually puts the top level
CMakeLists.txt (the one with PROJECT macro)
in the top most directory you did not do this.

Whatever your reason are, this is the reason you need to
specify the binary_dir to ADD_SUBDIRECTORY.

In fact in your case you do not go to a subdir
but to a "sibling" dir since as far as I understand you have:

/Users/mjackson/Task_7/MXA_Workspace/PFImport
/Users/mjackson/Task_7/MXA_Workspace/MXADataModel

>
> If I do ADD_SUBDIRECTORY(MXADataModel ${PROJECT_BINARY_DIR}/
> MXADataModel)
>
> Then cmake and make both run without complaints.
>
> --
> Mike Jackson   Senior Research Engineer
> Innovative Management & Technology Services
>
>
> On Jun 5, 2007, at 1:47 PM, Eric Noulard wrote:
>
> > 2007/6/5, David Cole <david.cole at kitware.com>:
> >> The thing that's strange about it is the second arg to
> >> ADD_SUBDIRECTORY.
> >> That should be a binary directory that is used by no other
> >> ADD_SUBDIRECTORY
> >> call and it should be different than the main PROJECT_BINARY_DIR
> >> as well...
> >
> > I didn't know thta (in fact I never use the [binary_dir] arg)
> >
> > Nevertheless, should it be DIFFERENT or UNIQUE from
> > ADD_LIBRARY/ADD_EXECUTABLE point of view?
> >
> >>
> >> It should perhaps be "${PROJECT_BINARY_DIR}/MXADataModel"
> >> ...?
> >
> > in this case:
> >
> > ADD_SUBDIRECTORY(MXADataModel)
> >
> > should be enough to get what you suggest, no?
> >
> >>
> >> HTH,
> >> David
> >>
> > --
> > Erk
>
>


-- 
Erk