Disable qt6 frontend as it doesn't build on s390x

Resolves: #1923798

poppler.spec

@@ -4,7 +4,7 @@
 Summary: PDF rendering library
 Name:    poppler
 Version: 21.07.0
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: (GPLv2 or GPLv3) and GPLv2+ and LGPLv2+ and MIT
 URL:     http://poppler.freedesktop.org/
 Source0: http://poppler.freedesktop.org/poppler-%{version}.tar.xz
@@ -47,7 +47,6 @@ BuildRequires: pkgconfig(Qt5Gui)
 BuildRequires: pkgconfig(Qt5Test)
 BuildRequires: pkgconfig(Qt5Widgets)
 BuildRequires: pkgconfig(Qt5Xml)
-BuildRequires: pkgconfig(Qt6)
 BuildRequires: boost-devel
 
 Requires: poppler-data
@@ -104,20 +103,6 @@ Obsoletes: %{name}-qt-devel < 0.90.0-9
 %description qt5-devel
 %{summary}.
 
-%package qt6
-Summary: Qt6 wrapper for poppler
-Requires: %{name}%{?_isa} = %{version}-%{release}
-%description qt6
-%{summary}.
-
-%package qt6-devel
-Summary: Development files for Qt6 wrapper
-Requires: %{name}-qt6%{?_isa} = %{version}-%{release}
-Requires: %{name}-devel%{?_isa} = %{version}-%{release}
-Requires: qt6-qtbase-devel
-%description qt6-devel
-%{summary}.
-
 %package cpp
 Summary: Pure C++ wrapper for poppler
 Requires: %{name}%{?_isa} = %{version}-%{release}
@@ -214,14 +199,6 @@ test "$(pkg-config --modversion poppler-qt5)" = "%{version}"
 %{_libdir}/pkgconfig/poppler-qt5.pc
 %{_includedir}/poppler/qt5/
 
-%files qt6
-%{_libdir}/libpoppler-qt6.so.2*
-
-%files qt6-devel
-%{_libdir}/libpoppler-qt6.so
-%{_libdir}/pkgconfig/poppler-qt6.pc
-%{_includedir}/poppler/qt6/
-
 %files cpp
 %{_libdir}/libpoppler-cpp.so.0*
 
@@ -235,6 +212,10 @@ test "$(pkg-config --modversion poppler-qt5)" = "%{version}"
 %{_mandir}/man1/*
 
 %changelog
+* Mon Jul 26 2021 Marek Kasik <mkasik@redhat.com> - 21.07.0-2
+- Disable qt6 frontend as it doesn't build on s390x
+- Resolves: #1923798
+
 * Mon Jul 26 2021 Marek Kasik <mkasik@redhat.com> - 21.07.0-1
 - Update to 21.07.0
 - Add requirement of boost for performance gain in splash