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# CMP0044

Case sensitive `<LANG>_COMPILER_ID` generator expressions

CMake 2.8.12 introduced the `<LANG>_COMPILER_ID` `generator expressions` to allow comparison of the `CMAKE_<LANG>_COMPILER_ID` with a test value. The possible valid values are lowercase, but the comparison with the test value was performed case-insensitively.

The OLD behavior for this policy is to perform a case-insensitive comparison with the value in the `<LANG>_COMPILER_ID` expression. The NEW behavior for this policy is to perform a case-sensitive comparison with the value in the `<LANG>_COMPILER_ID` expression.

This policy was introduced in CMake version 3.0. CMake version 3.2.2 warns when the policy is not set and uses OLD behavior. Use the cmake_policy command to set it to OLD or NEW explicitly.

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