upstream is only 3.5 w/ https://github.com/awesomeWM/awesome/pull/4012.patch
update to 3.10
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.10)
 project(awesome C)
 
 # Require an out-of-source build. We generate an awesomerc.lua in the build dir
--- a/tests/examples/CMakeLists.txt
+++ b/tests/examples/CMakeLists.txt
@@ -14,7 +14,7 @@ if(NOT DEFINED PROJECT_NAME)
     project(awesome-tests-examples NONE)
 endif()
 
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.10)
 
 # Get and update the LUA_PATH so the scripts can be executed without awesome.
 execute_process(COMMAND ${LUA_EXECUTABLE} -e "p = package.path:gsub(';', '\\\\;'); io.stdout:write(p)"