removed cpp standard from cmake

CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.8)
 project(bls12-381 VERSION 1.0.0)
 
-set(CMAKE_CXX_STANDARD 17)
+#set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_EXTENSIONS ON)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 add_compile_options(-Wall)

include/g.hpp

@@ -1,6 +1,7 @@
 #pragma once
 #include <cmath>
 #include <vector>
+#include <functional>
 #include "span.h"
 
 namespace bls12_381

include/pairing.hpp

@@ -1,6 +1,7 @@
 #pragma once
 #include <array>
 #include <vector>
+#include <functional>
 
 namespace bls12_381
 {

src/sha256.hpp

@@ -2,6 +2,7 @@
 
 #include <string>
 #include <array>
+#include <cstdint>
 
 using namespace std;