diff --git a/.gitignore b/.gitignore
index ef488258..502d4ff3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,18 +1,15 @@
 /INSTALL
 /Makefile
 /Makefile.in
+/build/*
 /aclocal.m4
 /autom4te.cache/
 /config.*
 /configure
-/depcomp
 /ebusd
 /ebusd*.tar.*
-/install-sh
-/missing
 /stamp-h?
 .deps/
 *.o
 *.dirstamp
-/compile
 /feed
diff --git a/build/.info b/build/.info
new file mode 100644
index 00000000..e69de29b
diff --git a/configure.ac b/configure.ac
index 7a97327a..11e8cd81 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,8 @@
 AC_PREREQ([2.65])
 AC_INIT([ebusd], [0.2.0], [roland.jax@liwest.at], [ebusd], [https://github.com/yuhu-/ebusd])
 
-AM_INIT_AUTOMAKE([1.11 -Wall no-define])
+AC_CONFIG_AUX_DIR([build])
+AM_INIT_AUTOMAKE([1.11 -Wall -Werror foreign])
 
 AC_CONFIG_MACRO_DIR([m4])