Use “BuildRequires: appstream” only on Fedora

ibus-table.spec

@@ -1,6 +1,6 @@
 Name:       ibus-table
 Version:    1.12.4
-Release:    4%{?dist}
+Release:    5%{?dist}
 Summary:    The Table engine for IBus platform
 License:    LGPLv2+
 URL:        http://code.google.com/p/ibus/
@@ -12,7 +12,9 @@ BuildRequires:  gcc
 BuildRequires:  ibus-devel > 1.3.0
 BuildRequires:  python3-devel
 # for the unit tests
+%if 0%{?fedora}
 BuildRequires:  appstream
+%endif
 BuildRequires:  libappstream-glib
 BuildRequires:  desktop-file-utils
 BuildRequires:  python3-gobject
@@ -69,7 +71,9 @@ export PYTHON=%{__python3}
 %find_lang %{name}
 
 %check
+%if 0%{?fedora}
 appstreamcli validate --pedantic --explain --no-net %{buildroot}/%{_datadir}/metainfo/*.appdata.xml
+%endif
 appstream-util validate-relax --nonet %{buildroot}/%{_datadir}/metainfo/*.appdata.xml
 desktop-file-validate \
     $RPM_BUILD_ROOT%{_datadir}/applications/ibus-setup-table.desktop
@@ -146,6 +150,9 @@ fi
 %{_datadir}/installed-tests/%{name}
 
 %changelog
+* Wed Feb 17 2021 Mike FABIAN <mfabian@redhat.com> - 1.12.4-5
+- Use “BuildRequires:  appstream” only on Fedora
+
 * Tue Feb 16 2021 Mike FABIAN <mfabian@redhat.com> - 1.12.4-4
 - Remove i3 from BuildRequires