diff --git a/
configure.ac b/
configure.acindex 826e644..ce4a07c 100644
--- a/
configure.ac+++ b/
configure.ac
@@ -26,7 +26,18 @@ AC_PREREQ(2.63) dnl Minimum Autoconf version required.
dnl We use GNU make extensions; automake 1.10 defaults to -Wportability.
AM_INIT_AUTOMAKE([gnits 1.8 -Wno-portability dist-bzip2 no-dist-gzip])
-AM_MAINTAINER_MODE
+
+dnl If autogenerated files are absent, set maintainer mode to recreate them
+if [ test -f libcpu/i386_dis.h ]; then
+ use_maintainer_mode=enable
+elif [ test -f libcpu/x86_64_dis.h ]; then
+ use_maintainer_mode=enable
+fi
+if [ -z "$use_maintainer_mode" ]; then
+ AM_MAINTAINER_MODE
+else
+ AM_MAINTAINER_MODE(enable)
+fi
dnl Unique ID for this build.
MODVERSION="Build on $(hostname) $(date +%FT%R:%S%z)"