Use %make_build macro

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

luksmeta.spec

@@ -1,6 +1,6 @@
 Name:           luksmeta
 Version:        9
-Release:        10%{?dist}
+Release:        11%{?dist}
 Summary:        Utility for storing small metadata in the LUKSv1 header
 
 License:        LGPLv2+
@@ -43,7 +43,7 @@ This package contains development files for the LUKSMeta library.
 
 %build
 %configure
-make %{?_smp_mflags}
+%make_build
 
 %install
 rm -rf %{buildroot}
@@ -69,6 +69,10 @@ make %{?_smp_mflags} check
 %{_libdir}/pkgconfig/luksmeta.pc
 
 %changelog
+* Tue Apr 06 2021 Timm Bäder <tbaeder@redhat.com> - 9-11
+- Use make macro
+- https://docs.fedoraproject.org/en-US/packaging-guidelines/#_parallel_make
+
 * Mon Apr 05 2021 Sergio Correia <scorreia@redhat.com> - 9-10
 - Add cryptsetup as a package required during build time.