From bc611490d909e8b63ef82f87cf696c6c9447d6e3 Mon Sep 17 00:00:00 2001
From: Peter Hill <peter.hill@york.ac.uk>
Date: Thu, 19 Oct 2023 17:45:51 +0100
Subject: [PATCH] CMake: Don't add uninstall target and CPack config if not
 top-level

Fixes #128
---
 CMakeLists.txt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6202498..45bc5c7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@
 ##################################
 
 #Minimum required CMake Version
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.21.0)
 
 #Project Name
 PROJECT(NCXX C CXX)
@@ -685,4 +685,6 @@ ENDIF()
 ##
 # CPack, CMakeInstallation.cmake file.
 ##
-INCLUDE(CMakeInstallation.cmake)
+if (PROJECT_IS_TOP_LEVEL)
+  include(CMakeInstallation.cmake)
+endif()