Starting with Python 3.11, the definition HAVE_LIBB2 was introduced to support building the _blake2 extension against the libb2 library.
See python/cpython@b16b6bb8dac ("bpo-47095: Use libb2 to provide blake2 implementation (GH-32059)", 2022-03-26)
In additional of building against the built-in implementation, the CMake build-system should be updated to support this.
Related issues and pull requests:
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Starting with Python 3.11, the definition HAVE_LIBB2 was introduced to support building the _blake2 extension against the libb2 library.
See python/cpython@b16b6bb8dac ("bpo-47095: Use libb2 to provide blake2 implementation (GH-32059)", 2022-03-26)
In additional of building against the built-in implementation, the CMake build-system should be updated to support this.
Related issues and pull requests: