make -- this subdirectory contains Makefile fragments. configure substitutes them for ac_include lines in Makefile.in. (This is an enhancement to standard Autoconf; see aclocal.m4.) kb@mail.tug.org ------------------------ With the long overdue transition from autoconf-2.13 to autoconf-2.59+ this is handled as follows: Each 'ac_include' in Makefile.in is replaced by 'kpse_include' and the command 'AC_CONFIG_FILES([Makefile])' in configure.in or configure.ac is replaced by 'KPSE_CONFIG_FILES([Makefile])'. The macro KPSE_CONFIG_FILES (defined in kpse_inc.m4) uses standard autoconf mechanisms to achieve the desired substitutions. Peter Breitenlohner