[CMake] Re: What's the difference of CMAKE_SOURCE_DIR, PROJECT_SOURCE_DIR and project_SOURCE_DIR?

[Clark J. Wang]

On 5/22/07, Clark J. Wang <dearvoid at gmail.com> wrote:
>
> For PROJECT(project), what's the difference between CMAKE_SOURCE_DIR,
> PROJECT_SOURCE_DIR and project_SOURCE_DIR? And XXX_BINARY_DIR?
>

I found quite a few of similar variables on the wiki page (
http://www.cmake.org/Wiki/CMake_Useful_Variables ). They confuse me a lot.
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