Small comment and maybe it's me. 2.4.0 requires libksba 1.6.3+ but this has last tag of libksba-1.6.2 and NEWS says 1.6.3 is unreleased [1]. The download section of gnupg.org does show 1.6.3 - so perhaps I'm looking in wrong git repo. gene [1] git://git.gnupg.org/libksba.git