Hello, since version 1.14, gdbm doesn't export "gdbm_errno" anymore [1], so the guile-gdbm ffi binding code [2] need updates now (I'm not confident to do it myself...).
[1] http://git.gnu.org.ua/cgit/gdbm.git/commit/?id=c175231e2781abd17eabf412cfb597654a076c7b [2] https://github.com/ijp/guile-gdbm/blob/master/gdbm.scm#L156
