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The changes are part of CMP0128. When the standard level is unset: * Flags are added if extension mode doesn't match the compiler's default. Previously logic only worked if LANG_EXTENSIONS was ON. Fixes #22224. * The full flag is used. Previously CMAKE_LANG_EXTENSION_COMPILE_OPTION was used. This was only supported for IAR. Otherwise: * Avoid adding flags if not necessary per the detected compiler defaults. * Fixed check for when the requested standard is older. It now matches the nearby comments. I reworded the fallback comment as its logic was a bit difficult to wrap my head around.
9 lines
471 B
Plaintext
9 lines
471 B
Plaintext
CMake Warning \(dev\) in CMakeLists\.txt:
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Policy CMP0128 is not set: Selection of language standard and extension
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flags improved\. Run "cmake --help-policy CMP0128" for policy details\. Use
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the cmake_policy command to set the policy and suppress this warning\.
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For compatibility with older versions of CMake, unnecessary flags for
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language standard or compiler extensions may be added.
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This warning is for project developers\. Use -Wno-dev to suppress it\.
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