second attempt at fixing osx build

Author: Mohammad Rezaei

CMakeLists.txt

@@ -1,5 +1,9 @@
 cmake_minimum_required(VERSION 3.13.0)
 
+if(POLICY CMP0167)
+  cmake_policy(SET CMP0167 NEW)
+endif()
+
 set(ETH_CMAKE_DIR   "${CMAKE_CURRENT_LIST_DIR}/cmake"   CACHE PATH "The path to the cmake directory")
 list(APPEND CMAKE_MODULE_PATH ${ETH_CMAKE_DIR})
 

cmake/EthCompilerSettings.cmake

@@ -110,6 +110,8 @@ if (("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU") OR ("${CMAKE_CXX_COMPILER_ID}" MA
 			message(FATAL_ERROR "${PROJECT_NAME} requires clang++ 14.0 or greater.")
 		endif ()
 
+		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --system-header-prefix=/usr/local/include")
+
 		# use std::invoke_result, superseding std::result_of which has been removed in c++20
 		add_compile_definitions(BOOST_ASIO_HAS_STD_INVOKE_RESULT)
 		if ("${CMAKE_SYSTEM_NAME}" MATCHES "Darwin")

scripts/install_obsolete_jsoncpp_1_7_4.sh

@@ -4,9 +4,9 @@ set -eu
 TEMPDIR=$(mktemp -d)
 (
     cd "$TEMPDIR"
-    jsoncpp_version="1.7.4"
+    jsoncpp_version="1.9.6"
     jsoncpp_package="jsoncpp-${jsoncpp_version}.tar.gz"
-    jsoncpp_sha256=10dcd0677e80727e572a1e462193e51a5fde3e023b99e144b2ee1a469835f769
+    jsoncpp_sha256=f93b6dd7ce796b13d02c108bc9f79812245a82e577581c4c9aabe57075c90ea2
     wget -O "$jsoncpp_package" https://github.com/open-source-parsers/jsoncpp/archive/${jsoncpp_version}.tar.gz
     if ! [ "$(sha256sum "$jsoncpp_package")" = "${jsoncpp_sha256}  ${jsoncpp_package}" ]
     then