configure.ac: Default modules directory not set correctly on OpenBSD $ mcabber -V | grep Modules Modules directory: 23722{exec_prefix}/lib/mcabber This is caused by the following line in mcabber's configure.ac: AC_DEFINE_DIR(PKGLIB_DIR, "${libdir}/${PACKAGE}", [Modules directory]) It looks like AC_DEFINE_DIR is used incorrectly: it seems its second argument is supposed to be a single unquoted variable.