Cmake-Gui : CMAKE_SOURCE_DIR bug

This discussion covers the bug pretty well but essentially it boils down to this.

Note in the above picture the source directory ends with a trailing '/'

This causes problems when users check for the top level project. Here is some example code that hit this bug.

if (${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_SOURCE_DIR})
    set(FOOBAR_IS_TOP_LEVEL ON)
endif()

The project will never be top level because CMAKE_SOURCE_DIR will end in a trailing '/' while CMAKE_CURRENT_SOURCE_DIR will not.

Basically the inputs of cmake-gui need to be sanitized to prevent this type of error.

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