-AC_CHECK_HEADERS(limits.h syslimits.h)
-AC_OUTPUT(Makefile src/Makefile tests/Makefile docs/Makefile lib/Makefile include/Makefile support/Makefile support/libmemcached.pc)
+AC_SEARCH_LIBS(getopt_long, gnugetopt)
+AC_OUTPUT(Makefile src/Makefile tests/Makefile docs/Makefile lib/Makefile include/Makefile support/Makefile support/libmemcached.pc support/libmemcached.spec)