https://bugs.gentoo.org/955898

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@
 # Please note that the package source code is licensed under its own license.
 
 project ( toluapp C )
-cmake_minimum_required ( VERSION 2.8 )
+cmake_minimum_required ( VERSION 3.15 )
 include ( GNUInstallDirs )
 
 find_package ( Lua ${LUA_VERSION} EXACT REQUIRED )