My main problem with autotools has never been m4 but the fact that they don't provide a good experience on Windows. Cygwin is not something you want to depend o

My main problem with autotools has never been m4 but the fact that they don't provide a good experience on Windows. Cygwin is not something you want to depend on due to performance, and while MSYS has made great strides, as of 2024 it's not yet perfect. IMHO people invented CMake and other build systems after being tired of trying to get autotools to provide a nice experience on Windows.