Use -fno-semantic-interposition and more make macros

see https://github.com/SELinuxProject/selinux/blob/master/README.md

CFLAGS that are encouraged to be set when overriding are:

  -fno-semantic-interposition for gcc or compilers that do not do this.

libselinux.spec

@@ -1,5 +1,5 @@
 %define ruby_inc %(pkg-config --cflags ruby)
-%define libsepolver 3.1
+%define libsepolver 3.1-2
 
 Summary: SELinux library and simple utilities
 Name: libselinux
@@ -102,6 +102,7 @@ export DISABLE_RPM="y"
 export USE_PCRE2="y"
 
 %set_build_flags
+CFLAGS="$CFLAGS -fno-semantic-interposition"
 
 # To support building the Python wrapper against multiple Python runtimes
 # Define a function, for how to perform a "build" of the python wrapper against
@@ -110,13 +111,12 @@ BuildPythonWrapper() {
   BinaryName=$1
 
   # Perform the build from the upstream Makefile:
-  make \
+  %make_build \
     PYTHON=$BinaryName \
-    LIBDIR="%{_libdir}" %{?_smp_mflags} \
+    LIBDIR="%{_libdir}" \
     pywrap
 }
 
-make clean
 %make_build LIBDIR="%{_libdir}" swigify
 %make_build LIBDIR="%{_libdir}" all
 
@@ -128,12 +128,6 @@ BuildPythonWrapper %{__python3}
 InstallPythonWrapper() {
   BinaryName=$1
 
-  make \
-    PYTHON=$BinaryName \
-    LIBDIR="%{_libdir}" %{?_smp_mflags} \
-    LIBSEPOLA="%{_libdir}/libsepol.a" \
-    pywrap
-
   make \
     PYTHON=$BinaryName \
     DESTDIR="%{buildroot}" LIBDIR="%{_libdir}" \
@@ -153,7 +147,8 @@ echo "d %{_rundir}/setrans 0755 root root" > %{buildroot}%{_tmpfilesdir}/libseli
 
 InstallPythonWrapper %{__python3}
 
-make DESTDIR="%{buildroot}" LIBDIR="%{_libdir}" SHLIBDIR="%{_libdir}" BINDIR="%{_bindir}" SBINDIR="%{_sbindir}" RUBYINSTALL=%{ruby_vendorarchdir} install install-rubywrap
+%make_install LIBDIR="%{_libdir}" SHLIBDIR="%{_libdir}" BINDIR="%{_bindir}" SBINDIR="%{_sbindir}"
+make DESTDIR="%{buildroot}" RUBYINSTALL=%{ruby_vendorarchdir} install-rubywrap
 
 # Nuke the files we don't want to distribute
 rm -f %{buildroot}%{_sbindir}/compute_*
@@ -229,6 +224,7 @@ rm -f %{buildroot}%{_mandir}/man8/togglesebool*
 * Mon Jul 13 2020 Tom Stellard <tstellar@redhat.com> - 3.1-2
 - Use make macros
 - https://fedoraproject.org/wiki/Changes/UseMakeBuildInstallMacro
+- Use -fno-semantic-interposition and more make macros
 
 * Fri Jul 10 2020 Petr Lautrbach <plautrba@redhat.com> - 3.1-1
 - SELinux userspace 3.1 release