Use cmake 3.18 instead of 3.20 because of debian support

DennisOSRM · DennisOSRM · commit 6e5f0d74bd64 · 2022-12-10T18:50:37.000+01:00
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 
 if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR AND NOT MSVC_IDE)
   message(FATAL_ERROR "In-source builds are not allowed.
diff --git a/src/nodejs/CMakeLists.txt b/src/nodejs/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.18)
 
 message(STATUS "Building node_osrm")
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-cmake_minimum_required(VERSION 3.20)`
	`1`	`+cmake_minimum_required(VERSION 3.18)`
`2`	`2`
`3`	`3`	`set(CMAKE_CXX_STANDARD 17)`
`4`	`4`	`set(CMAKE_CXX_STANDARD_REQUIRED ON)`