CMP0002

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Logical target names must be globally unique.

Targets names created with :command:add_executable, :command:add_library, or :command:add_custom_target are logical build target names. Logical target names must be globally unique because:

Unique names may be referenced unambiguously both in CMake code and on make tool command lines.
Logical names are used by :generator:Xcode and :ref:Visual Studio <Visual Studio Generators> IDE generators to produce meaningful project names for the targets.

The logical name of executable and library targets does not have to correspond to the physical file names built. Consider using the :prop_tgt:OUTPUT_NAME target property to create two targets with the same physical name while keeping logical names distinct. Custom targets must simply have globally unique names (unless one uses the global property :prop_gbl:ALLOW_DUPLICATE_CUSTOM_TARGETS with a Makefiles generator).

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