This is what I did (I am new to this list however, so more
experienced people might have better answers):
download the source code of gpgme, cd into the directory,
there is a doc directory in there, with some Makefile stanza Makefile.am
or the like.
I ran
$ ./configure
from the main
Where can I find a manual for gpgme's API?
On gnupg's homepage, a reference manual is referenced, but there is no such
manual under Documentation - Manuals.
A search on Google only turns up a non-downloadable outdated version of the
manual for 1.1.6 on pyme.sourceforge.net.
I see in gpgme download