Use cmake macros.

glslang.spec

@@ -5,7 +5,7 @@
 
 Name:           glslang
 Version:        8.13.3559
-Release:        4%{?gitrel}%{?dist}
+Release:        5%{?gitrel}%{?dist}
 Summary:        OpenGL and OpenGL ES shader front end and validator
 
 License:        BSD and GPLv3+ and ASL 2.0
@@ -48,11 +48,11 @@ pushd build
         -DCMAKE_SKIP_RPATH:BOOL=yes \
         -DBUILD_SHARED_LIBS=OFF \
         -GNinja ..
-%{ninja_build}
+%{cmake_build}
 popd
 
 %install
-%{ninja_install} -C build
+%{cmake_install} -C build
 
 # we don't want them in here
 rm -rf %{buildroot}%{_includedir}/SPIRV
@@ -86,6 +86,9 @@ install -pm 0644 build/StandAlone/libglslang-default-resource-limits.a %{buildro
 %{_libdir}/cmake/*
 
 %changelog
+* Tue Aug 04 2020 Dave Airlie <airlied@redhat.com> - 8.13.3559-5
+- Use cmake macros.
+
 * Sat Aug 01 2020 Fedora Release Engineering <releng@fedoraproject.org> - 8.13.3559-4.2020421.gitc9b28b9
 - Second attempt - Rebuilt for
   https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild