diff --git a/mtdev.spec b/mtdev.spec
index 534d62c..b228eda 100644
--- a/mtdev.spec
+++ b/mtdev.spec
@@ -3,7 +3,7 @@
 
 Name:           mtdev
 Version:        1.1.2
-Release:        2%{?gitdate:.%{gitdate}git%{gitversion}}%{dist}
+Release:        3%{?gitdate:.%{gitdate}git%{gitversion}}%{dist}
 Summary:        Multitouch Protocol Translation Library
 
 Group:          System Environment/Libraries
@@ -22,7 +22,8 @@ Source0:        http://bitmath.org/code/%{name}/%{name}-%{version}.tar.bz2
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildRequires:  autoconf automake libtool
-BuildRequires:  xorg-x11-util-macros >= 1.5.0-1
+
+ExcludeArch: s390 s390x %{?rhel:ppc ppc64}
 
 %description
 %{name} is a stand-alone library which transforms all variants of kernel MT
@@ -42,7 +43,7 @@ Multitouch protocol translation library development package.
 %setup -q -n %{tarball}-%{?gitdate:%{gitdate}}%{!?gitdate:%{version}}
 
 %build
-autoreconf -v --install || exit 1
+autoreconf --force -v --install || exit 1
 %configure --disable-static
 make %{?_smp_mflags}
 
@@ -74,6 +75,11 @@ rm -rf %{buildroot}
 %{_bindir}/mtdev-test
 
 %changelog
+* Mon Aug 13 2012 Peter Hutterer <peter.hutterer@redhat.com> 1.1.2-3
+- Drop xorg-x11-util-macros build requires, not needed anymore
+- Don't build on s390 (or ppc, if on RHEL)
+- Force autoreconf to avoid libtool errors
+
 * Fri Jul 20 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 1.1.2-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass_Rebuild