Taken from: https://github.com/mborgerding/kissfft/pull/101.patch (merged) CMake 4 dropped support for CMake versions <= 3.5. --- a/kissfft-config.cmake.in +++ b/kissfft-config.cmake.in @@ -24,7 +24,7 @@ @PACKAGE_INIT@ -cmake_minimum_required(VERSION 3.3) +cmake_minimum_required(VERSION 3.10) # Set include glob of config files using SHARED/static component, BUILD_SHARED_LIBS by default set(_kissfft_shared_detected OFF)