-AC_CONFIG_FILES([src/daemon.conf:src/daemon/daemon.conf.in])
-AS_IF([test "x$os_is_win32" = "x1"], [config_source_ext=win32], [config_source_ext=in])
-AC_CONFIG_FILES([src/default.pa:src/daemon/default.pa.$config_source_ext])
-AC_CONFIG_FILES([src/system.pa:src/daemon/system.pa.$config_source_ext])
+AC_CONFIG_FILES([src/daemon.conf:src/daemon/daemon.conf.in],
+ [m4 src/daemon.conf > src/daemon.conf.gen && mv src/daemon.conf.gen src/daemon.conf])
+AC_CONFIG_FILES([src/default.pa:src/daemon/default.pa.in],
+ [m4 src/default.pa > src/default.pa.gen && mv src/default.pa.gen src/default.pa])
+AC_CONFIG_FILES([src/system.pa:src/daemon/system.pa.in],
+ [m4 src/system.pa > src/system.pa.gen && mv src/system.pa.gen src/system.pa])