-m4_include(pkg.m4)
-TDB_OBJ=""
AC_SUBST(TDB_OBJ)
-PKG_CHECK_MODULES(TDB, tdb >= 1.1.0)
+AC_SUBST(TDB_CFLAGS)
+AC_SUBST(TDB_LIBS)
+
+AC_CHECK_HEADER(tdb.h,
+ [AC_CHECK_LIB(tdb, tdb_open, [TDB_LIBS="-ltdb"]) ],
+ [PKG_CHECK_MODULES(TDB, tdb >= 1.1.0)])