Add requirement for minimum gcc version.

CMakeLists.txt

@@ -3,6 +3,14 @@
 cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
 project(musrSim)
 
+#----------------------------------------------------------------------------
+# gcc minimum version 10.0 required
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "10.0")
+    message(FATAL_ERROR "Minimum required version of GCC is 10.0")
+  endif()
+endif()
+
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)