autoreconf for the ppp 2.5.0 patches

NetworkManager-l2tp.spec

@@ -27,6 +27,9 @@ BuildRequires: NetworkManager-libnm-devel >= 1:1.20.0
 BuildRequires: libnma-devel >= 1.8.0
 BuildRequires: pkgconfig
 BuildRequires: ppp-devel >= 2.5.0
+# ppp 2.5.0 patches require autoreconf, drop this when a new version
+# is released and those patches are dropped
+BuildRequires: autoconf automake
 BuildRequires: libtool gettext
 BuildRequires: libsecret-devel
 BuildRequires: openssl-devel >= 1:1.1.0
@@ -61,9 +64,11 @@ IPsec VPN support with the NetworkManager (GNOME files).
 %autosetup -p1
 
 %build
-if [ ! -f configure ]; then
-  autoreconf -fi
-fi
+#if [ ! -f configure ]; then
+#  autoreconf -fi
+#fi
+# for ppp 2.5.0 patches
+autoreconf -fi
 %configure \
     --disable-static \
     --runstatedir=/run \