-install -d $RPM_BUILD_ROOT{/etc/modprobe.d,/lib/modules/%{_kernel_ver}/kernel/net/ipv4/netfilter}
-cd extensions
-install iptable_rawpost.ko $RPM_BUILD_ROOT/lib/modules/%{_kernel_ver}/kernel/net/ipv4/netfilter
-%install_kernel_modules -m compat_xtables -d kernel/net/netfilter
-install -p {ACCOUNT/,pknock/,}xt_*.ko $RPM_BUILD_ROOT/lib/modules/%{_kernel_ver}/kernel/net/netfilter
-cd ..
+%install_kernel_modules -m extensions/iptable_rawpost -d kernel/net/ipv4/netfilter
+for drv in extensions/compat_xtables.ko extensions/{ACCOUNT/,pknock/,}xt_*.ko ; do
+%install_kernel_modules -m ${drv%.ko} -d kernel/net/netfilter
+done