Use make macros

https://fedoraproject.org/wiki/Changes/UseMakeBuildInstallMacro

gnupg2.spec

@@ -7,7 +7,7 @@
 Summary: Utility for secure communication and data storage
 Name:    gnupg2
 Version: 2.2.21
-Release: 1%{?dist}
+Release: 2%{?dist}
 
 License: GPLv3+
 Source0: ftp://ftp.gnupg.org/gcrypt/%{?pre:alpha/}gnupg/gnupg-%{version}%{?pre}.tar.bz2
@@ -135,12 +135,11 @@ sed -i -e 's/"libpcsclite\.so"/"%{pcsclib}"/' scd/scdaemon.c
 # need scratch gpg database for tests
 mkdir -p $HOME/.gnupg
 
-make %{?_smp_mflags}
+%make_build
 
 
 %install
-make install DESTDIR=%{buildroot} \
-  INSTALL="install -p" \
+%make_install \
   docdir=%{_pkgdocdir}
 
 %if %{without unversioned_gpg}
@@ -224,6 +223,10 @@ make -k check
 
 
 %changelog
+* Tue Jul 21 2020 Tom Stellard <tstellar@redhat.com> - 2.2.21-2
+- Use make macros
+- https://fedoraproject.org/wiki/Changes/UseMakeBuildInstallMacro
+
 * Mon Jul 20 2020 Tomáš Mráz <tmraz@redhat.com> - 2.2.21-1
 - upgrade to 2.2.21