diff --git a/fwnn.changes b/fwnn.changes
index 48199d9..24bc691 100644
--- a/fwnn.changes
+++ b/fwnn.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Aug 21 13:31:28 UTC 2019 - Berthold Gunreben <azouhr@opensuse.org>
+
+- run autoreconf because delievered configure is too old for
+  link time optimization
+
 -------------------------------------------------------------------
 Sat Mar 16 03:14:29 UTC 2019 - bkbin005@rinku.zaq.ne.jp
 
diff --git a/fwnn.spec b/fwnn.spec
index f51a1db..2ffed77 100644
--- a/fwnn.spec
+++ b/fwnn.spec
@@ -43,7 +43,10 @@ Patch1:         FreeWnn-ja.patch
 Patch2:         FreeWnn-noroot.patch
 Patch7:         FreeWnn-s390x.patch
 Patch8:         FreeWnn-warnings.patch
+BuildRequires:  autoconf
+BuildRequires:  automake
 BuildRequires:  fdupes
+BuildRequires:  libtool
 BuildRequires:  ncurses-devel
 BuildRequires:  tcpd-devel
 Requires:       fwnncom = %{version}
@@ -217,6 +220,7 @@ client programs that use the Korean Input System, Free kWnn.
 # %%patch3 -p1
 
 %build
+autoreconf -fi
 %configure --prefix=%{_prefix} \
             --libdir=%{_libdir} \
             --mandir=%{_mandir} \