use %%make_build, don't hardcode path to hardlink

breeze-icon-theme.spec

@@ -77,7 +77,7 @@ pushd %{_target_platform}
 %{cmake_kf5} ..
 popd
 
-make %{?_smp_mflags} -C %{_target_platform}
+%make_build -C %{_target_platform}
 
 
 %install
@@ -87,7 +87,7 @@ make install/fast DESTDIR=%{buildroot} -C %{_target_platform}
 #du -s  .
 #time optimizegraphics ||:
 du -s .
-/usr/sbin/hardlink -c -v %{buildroot}%{_datadir}/icons/
+hardlink -c -v %{buildroot}%{_datadir}/icons/
 du -s .
 
 # %%ghost icon.cache