On Tue, 3 Dec 2019 18:22:20 +0100 John Crisp <jcrisp at safeandsoundit.co.uk> wrote: > Any suggestions or links where I can find out? If you look carefully at the file configure.ac, you could probably work it out. https://git.claws-mail.org/?p=claws.git;a=blob_plain;f=configure.ac;hb=HEAD with regards Paul