CMake minimal build and dependencies (#5013)

cmake/test_compiler.cpp

@@ -1,9 +1,13 @@
 #include <iostream>
 #include <string>
+#include <optional>
+
+using namespace std::literals;
 
 int main()
 {
-  std::string str = "Try to compile";
-  std::cout << str << '\n';
+  std::optional<std::string> option;
+  std::string str = "Try to compile"s;
+  std::cout << str << " "s << option.has_value() << '\n';
   return 0;
 }