Update conditional build of lmdb

libldb.spec

@@ -2,6 +2,13 @@
 %{!?python2_sitelib:  %global python2_sitelib %(%{__python} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())")}
 %{!?python2_sitearch: %global python2_sitearch %(%{__python} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib(1))")}
 
+# lmdb is not supported on 32 bit architectures
+%if ((0%{?fedora} || 0%{?epel} > 6) && 0%{?__isa_bits} == 64)
+%global with_lmdb 1
+%else
+%global without_lmdb_flags --without-ldb-lmdb
+%endif
+
 %if 0%{?fedora} || 0%{?rhel} > 7
 %global with_python3 1
 %endif
@@ -44,7 +51,9 @@ BuildRequires: gcc
 BuildRequires: libtalloc-devel >= %{talloc_version}
 BuildRequires: libtdb-devel >= %{tdb_version}
 BuildRequires: libtevent-devel >= %{tevent_version}
+%if 0%{?with_lmdb}
 BuildRequires: lmdb-devel >= 0.9.16
+%endif
 BuildRequires: popt-devel
 BuildRequires: libxslt
 BuildRequires: docbook-style-xsl
@@ -166,6 +175,7 @@ sed -e 's:\.\./\.\./buildtools:./buildtools:' -i Makefile
            --builtin-libraries=replace \
            --with-modulesdir=%{_libdir}/ldb/modules \
            %{?extra_python} \
+           %{?without_lmdb_flags} \
            --with-privatelibdir=%{_libdir}/ldb
 
 make %{?_smp_mflags} V=1
@@ -200,8 +210,7 @@ rm -f $RPM_BUILD_ROOT/%{_mandir}/man3/_*
 %{_libdir}/ldb/libldb-key-value.so
 %{_libdir}/ldb/libldb-tdb-err-map.so
 %{_libdir}/ldb/libldb-tdb-int.so
-# lmdb is not supported on 32 bit architectures
-%if 0%{?__isa_bits} == 64
+%if 0%{?with_lmdb}
 %{_libdir}/ldb/libldb-mdb-int.so
 %endif
 %dir %{_libdir}/ldb/modules