CMP0044ΒΆ
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
3.19.8 warns when the policy is not set and uses OLD behavior. Use
the cmake_policy() command to set it to OLD or NEW explicitly.
Note
The OLD behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.