Use make macros

https://docs.fedoraproject.org/en-US/packaging-guidelines/#_parallel_make

Box2D.spec

@@ -1,7 +1,7 @@
 %global __cmake_in_source_build 1
 Name: Box2D
 Version:  2.4.1
-Release:  2%{?dist}
+Release:  3%{?dist}
 Summary: A 2D Physics Engine for Games
 
 License: zlib
@@ -36,10 +36,10 @@ rm -rf glew glfw
 
 %build
 %cmake -DBOX2D_INSTALL=ON -DBOX2D_BUILD_SHARED=ON .
-make
+%cmake_build
 
 %install
-make install DESTDIR=%{buildroot}
+%make_install
 
 %ldconfig_scriptlets
 
@@ -54,6 +54,9 @@ make install DESTDIR=%{buildroot}
 %{_libdir}/cmake/box2d/*.cmake
 
 %changelog
+* Wed Feb 10 2021 Timm Bäder <tbaeder@redhat.com> - 2.4.1-3
+- Use make macros
+
 * Mon Jan 25 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.4.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild