diff --git a/baselibs.conf b/baselibs.conf
new file mode 100644
index 0000000..b24d1bf
--- /dev/null
+++ b/baselibs.conf
@@ -0,0 +1 @@
+libpgm-5_2-0
diff --git a/openpgm.changes b/openpgm.changes
index 0193771..44f6445 100644
--- a/openpgm.changes
+++ b/openpgm.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Jul 13 07:39:53 UTC 2018 - dimstar@opensuse.org
+
+- Add baselibs.conf: build -32bit packages, which are needed by
+  zeromq's -32bit implementation.
+
 -------------------------------------------------------------------
 Tue Mar 27 11:49:58 CEST 2018 - kukuk@suse.de
 
diff --git a/openpgm.spec b/openpgm.spec
index 5855432..dd5d652 100644
--- a/openpgm.spec
+++ b/openpgm.spec
@@ -19,31 +19,29 @@
 
 
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
-
 %define major       5.2
 %define mpkg        5_2
 %define soname      0
 %define tarball_version 5-2-122
 %define libname     libpgm-%{mpkg}-%{soname}
-
 Name:           openpgm
 Version:        5.2.122
 Release:        0
 Summary:        OpenPGM implementation of the Reliable Multicast Protocol
 License:        LGPL-2.1-or-later
 Group:          Development/Libraries/C and C++
-Url:            https://github.com/steve-o/openpgm
+URL:            https://github.com/steve-o/openpgm
 Source:         https://github.com/steve-o/openpgm/archive/release-5-2-122.tar.gz#/openpgm-release-%{tarball_version}.tar.gz
+Source99:       baselibs.conf
 # PATCH-FIX-UPSTREAM bmwiedemann https://github.com/steve-o/openpgm/pull/48
 Patch0:         libpgm-5.2.122-reproducible.patch
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  gcc-c++
 BuildRequires:  glibc-devel
 BuildRequires:  libtool
 BuildRequires:  make
-BuildRequires:  pkg-config
+BuildRequires:  pkgconfig
 BuildRequires:  python-devel
 
 %description