make qt4 conditional, no on el8+ (#1773581)

qwt.spec

@@ -2,13 +2,17 @@
 # trim changelog included in binary rpms
 %global _changelog_trimtime %(date +%s -d "1 year ago")
 
+# build qt4 support (or not)
+%if 0%{?rhel} <  8
+%global qt4 1
+%endif
 # build qt5 support (or not)
 %global qt5 1
 
 Name:    qwt
 Summary: Qt Widgets for Technical Applications
 Version: 6.1.3
-Release: 11%{?dist}
+Release: 12%{?dist}
 
 License: LGPLv2 with exceptions
 URL:     http://qwt.sourceforge.net
@@ -31,11 +35,14 @@ BuildRequires: pkgconfig(Qt5Concurrent) pkgconfig(Qt5PrintSupport) pkgconfig(Qt5
 BuildRequires: pkgconfig(Qt5OpenGL) pkgconfig(Qt5Svg)
 BuildRequires: pkgconfig(Qt5Designer)
 %endif
+%if 0%{?qt4}
 BuildRequires: pkgconfig(QtGui) pkgconfig(QtSvg)
 BuildRequires: pkgconfig(QtDesigner)
+%{?_qt4_version:Requires: qt4%{?_isa} >= %{_qt4_version}}
+%endif
+
 # silly buildsys quirk
 BuildConflicts: qwt-devel
-%{?_qt4_version:Requires: qt4%{?_isa} >= %{_qt4_version}}
 
 
 Provides: qwt6 = %{version}-%{release}
@@ -99,20 +106,25 @@ pushd %{_target_platform}-qt5
 popd
 %endif
 
+%if 0%{?qt4}
 mkdir %{_target_platform}
 pushd %{_target_platform}
 %{qmake_qt4} QWT_CONFIG+=QwtPkgConfig ..
 
 %make_build
 popd
+%endif
 
 
 %install
 %if 0%{?qt5}
 make install INSTALL_ROOT=%{buildroot} -C %{_target_platform}-qt5
 %endif
+%if 0%{?qt4}
 make install INSTALL_ROOT=%{buildroot} -C %{_target_platform}
+%endif
 
+%if 0%{?qt4}
 # fixup doc path bogosity
 mv %{buildroot}%{_qt4_docdir}/html/html \
    %{buildroot}%{_qt4_docdir}/html/qwt
@@ -128,8 +140,18 @@ rm -rfv %{buildroot}%{_qt5_docdir}/html/*
 cp -alf %{buildroot}%{_qt4_docdir}/html/qwt/ \
         %{buildroot}%{_qt5_docdir}/html/qwt/
 %endif
+%else
+# fixup doc path bogosity
+mv %{buildroot}%{_qt5_docdir}/html/html \
+   %{buildroot}%{_qt5_docdir}/html/qwt
+
+mkdir -p %{buildroot}%{_mandir}
+mv %{buildroot}%{_qt5_docdir}/html/man/man3 \
+   %{buildroot}%{_mandir}/
+%endif
 
 
+%if 0%{?qt4}
 %ldconfig_scriptlets
 
 %files
@@ -147,12 +169,15 @@ cp -alf %{buildroot}%{_qt4_docdir}/html/qwt/ \
 %{_qt4_libdir}/qt4/mkspecs/features/qwt*
 %{_qt4_libdir}/pkgconfig/qwt.pc
 %{_qt4_libdir}/pkgconfig/qwtmathml.pc
+%endif
 
 %files doc
+%if 0%{?qt4}
 # own these to avoid needless dep on qt/qt-doc
 %dir %{_qt4_docdir}
 %dir %{_qt4_docdir}/html/
 %{_qt4_docdir}/html/qwt/
+%endif
 %if 0%{?qt5}
 %dir %{_qt5_docdir}
 %dir %{_qt5_docdir}/html/
@@ -182,6 +207,9 @@ cp -alf %{buildroot}%{_qt4_docdir}/html/qwt/ \
 
 
 %changelog
+* Sat Nov 30 2019 Rex Dieter <rdieter@fedoraproject.org> - 6.1.3-12
+- make qt4 conditional, no on el8+ (#1773581)
+
 * Fri Jul 26 2019 Fedora Release Engineering <releng@fedoraproject.org> - 6.1.3-11
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild