Rebuild for OCaml 4.05 in RHEL 7.5 (RHBZ#1568359)

Add explicit dependency on ocamlbuild.

ocaml-xmlm.spec

@@ -5,7 +5,7 @@
 
 Name:           ocaml-xmlm
 Version:        1.2.0
-Release:        15%{?dist}
+Release:        17%{?dist}
 Summary:        A streaming XML codec
 
 License:        BSD
@@ -19,6 +19,11 @@ Source2:        test-invalid.xml
 
 BuildRequires:  ocaml >= 3.10.0
 BuildRequires:  ocaml-findlib
+BuildRequires:  ocaml-ocamlbuild
+
+%if 0%{?epel}
+ExcludeArch:   ppc64
+%endif
 
 %global libname %(sed -e 's/^ocaml-//' <<< %{name})
 
@@ -103,6 +108,13 @@ grep expected invalid-err.log >/dev/null
 
 
 %changelog
+* Tue Apr 17 2018 Richard W.M. Jones <rjones@redhat.com> - 1.2.0-17
+- Rebuild for OCaml 4.05 in RHEL 7.5 (RHBZ#1568359)
+- Add explicit dependency on ocamlbuild.
+
+* Tue Sep 29 2015 Ding-Yi Chen <dchen@redhat.com> - 1.2.0-16
+- Exclude ppc64 for EPEL, as ocaml-findlib is not available on it.
+
 * Tue Jul 28 2015 Richard W.M. Jones <rjones@redhat.com> - 1.2.0-15
 - OCaml 4.02.3 rebuild.