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With the switch to upstream ncurses "ABI 6", Cygwin's ncurses has YA ABI bump and is now libncurses10. However, the regex used to determine in Utilities/Release/Cygwin/CMakeLists.txt which libncurses is being used does not handle multiple-digit ABIs. libncurses8 was the first version to be built with libtool and therefore contains a hyphen (cygncurses-8.dll). It was first introduced in 2004, so it should be sufficiently old to rely on. Furthermore, libncurses7 has a serious flaw in that it completely breaks if rebased. Therefore the easiest solution is to only look at the hyphened versions and change the regex accordingly.