diff --git a/pari.changes b/pari.changes
index 4e1420f..c875799 100644
--- a/pari.changes
+++ b/pari.changes
@@ -1,3 +1,14 @@
+-------------------------------------------------------------------
+Fri Dec  7 21:14:49 UTC 2018 - Todd R <toddrme2178@gmail.com>
+
+- Use %macro instead of %{macro} wherever possible.
+
+-------------------------------------------------------------------
+Fri Dec  7 16:38:08 UTC 2018 - Todd R <toddrme2178@gmail.com>
+
+- Fix building on SLE 15
+- Use %license macro
+
 -------------------------------------------------------------------
 Wed Aug 29 20:32:25 UTC 2018 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/pari.spec b/pari.spec
index e41eda2..5aacb1f 100644
--- a/pari.spec
+++ b/pari.spec
@@ -12,32 +12,42 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
+# Please submit bugfixes or comments via https://bugs.opensuse.org/
 #
 
 
+
+%if 0%{?sle_version} == 150000 && !0%{?is_opensuse}
+%bcond_with    qt
+%else
+%bcond_without qt
+%endif
+
+# See
+# http://pari.math.u-bordeaux.fr/archives/pari-dev-1211/msg00006.html
+# for details on the SO versioning.
+
 Name:           pari
-%define lname	libpari-gmp6
+%define soname  6
+%define lname   libpari-gmp%soname
 Version:        2.11.0
 Release:        0
-Summary:        Computer Algebra System for fast computations in Number Theory
+Summary:        Computer Algebra System for computations in Number Theory
 License:        GPL-2.0-only
 Group:          Productivity/Scientific/Math
 Url:            http://pari.math.u-bordeaux.fr/
-
-#Git-Clone:	http://pari.math.u-bordeaux.fr/git/pari.git
-#Git-Web:	http://pari.math.u-bordeaux.fr/cgi-bin/gitweb.cgi
 Source:         http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-%version.tar.gz
 Source2:        http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-%version.tar.gz.asc
 Source3:        http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-%version.changelog
 Patch1:         pari-nodate.diff
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildRequires:  fltk-devel
 BuildRequires:  gmp-devel
 BuildRequires:  libX11-devel
-BuildRequires:  libqt4-devel
 BuildRequires:  readline-devel
 BuildRequires:  xorg-x11-proto-devel
+%if %{with qt}
+BuildRequires:  libqt4-devel
+%endif
 
 %description
 PARI/GP is a computer algebra system designed for fast computations
@@ -63,7 +73,7 @@ functions.
 Summary:        Computer Algebra System library for fast computations in Number Theory
 # This is used by the data packages to avoid having a too-old version of libpari:
 Group:          System/Libraries
-Provides:       libpari-gmp = %version-%release
+Provides:       libpari-gmp = %version
 
 %description -n %lname
 PARI/GP is a computer algebra system designed for fast computations
@@ -102,33 +112,32 @@ make %{?_smp_mflags} all \
 cp "%{S:3}" .;
 
 %install
-b="%buildroot";
-make install DESTDIR="$b";
+%make_install
 
 %post   -n %lname -p /sbin/ldconfig
 %postun -n %lname -p /sbin/ldconfig
 
 %files gp
-%defattr(-,root,root)
+%license AUTHORS COPYING
 %_bindir/*
 %_datadir/%name
 %_libdir/%name.cfg
 %_mandir/man*/*
-%doc %name-%version.changelog
 
-#
-# See
-# http://pari.math.u-bordeaux.fr/archives/pari-dev-1211/msg00006.html
-# for details on the SO versioning.
-#
 %files -n %lname
-%defattr(-,root,root)
+%if 0%{?sle_version} <= 150000 && !0%{?is_opensuse}
+%dir %_licensedir
+%endif
+%license AUTHORS COPYING
+%doc %name-%version.changelog
+%doc CHANGES CHANGES-* NEW README
+%doc examples/
 %_libdir/libpari-gmp.so.%version
-%_libdir/libpari-gmp.so.6
+%_libdir/libpari-gmp.so.%soname
 
 %files devel
-%defattr(-,root,root)
-%_includedir/pari
+%license AUTHORS COPYING
+%_includedir/pari/
 %_libdir/libpari.so
 
 %changelog