Yet another attempt to use CMake

zz_msg/CMakeLists.txt

@@ -0,0 +1,28 @@
+#
+# Copyright (C) 2004-2016 ZNC, see the NOTICE file for details.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# This is implementation detail of CMake, but this install() runs last.
+# Details are at https://cmake.org/pipermail/cmake/2011-July/045615.html
+
+install(CODE "message(\"
+******************************************************************
+ ZNC was successfully installed.
+ You can use '${CMAKE_INSTALL_FULL_BINDIR}/znc --makeconf'
+ to generate a config file.
+
+ If you need help with using ZNC, please visit our wiki at:
+   http://znc.in\")")
+