[CMake] Build application suite with dependency checking but single shared libraries without it

[Tim Grothe]

Hi Cmakers,

I'm new to CMake and because every new technology is a bit tricky at first,
I hope some of you can give me a hint with the following build scenario.

Operating System: Windows

There are three directories on the same filesystem hierarchy.

- Include-directory
- Lib-directory
- Subversion-workingcopy

The workingcopy contains around 80 applications and like 900 shared
libraries
and all of those applications can make use of all shared libraries and form
together one application suite.

What I'd like to accomplish are the following two scenarios combined in one
CMake configuration (if possible):

1) Build the complete application suite with automatic dependency resolving.

For this scenario I would think that I put a CmakeLists.txt to every folder
hierarchy in the workingcopy and
add all the necessary folders with add_subdirectory(). Because of the many
shared libraries and the somewhat complex
folder-hierarchy I'm not that sure about how to manage the dependencies
(probably find_package()) but this should not
be the question now.
The header files, libs and the binaries should be stored in the
Include-Directory, Lib-Directory and a binary directory
on the same level like the other two directories.

2) Build a shared library or application on it's own without dependency
checking.

Every shared library and every application is an "independent" project.
When building one of these projects
the Include-Directory and the Lib-Directory should be used when compiling
and linking but if a dependency is missing
or a lib file is out of date this should result in a build error in this
scenario and the developer has to take care
of this situation by himself. The created binaries and libs should be
stored in a subdirectory of the corresponding project.

So I've got an idea about how to solve 1) but I have no idea how to solve
2) especially in combination with 1).

regards
Tim
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