From 51d0de9a349bf3e58b1563b39ae1f83c7326b116 Mon Sep 17 00:00:00 2001
From: "Scott E. Graves" <scott.e.graves@protonmail.com>
Date: Fri, 9 Jan 2026 16:48:23 -0600
Subject: [PATCH] fix icu in boost build

---
 cmake/libraries/boost.cmake | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/cmake/libraries/boost.cmake b/cmake/libraries/boost.cmake
index e0e3f64..86e3e02 100644
--- a/cmake/libraries/boost.cmake
+++ b/cmake/libraries/boost.cmake
@@ -95,8 +95,14 @@ if(PROJECT_ENABLE_BOOST)
       endif()
 
       if(PROJECT_ENABLE_LIBBITCOIN_SYSTEM)
-        set(BOOST_CXX_STANDARD 14)
+        set(BOOST_CXX_STANDARD 17)
         set(BOOST_OPTIONS cxxflags=-Wno-enum-constexpr-conversion)
+        if (PROJECT_IS_DARWIN)
+          set(BOOST_OPTIONS   
+            ${BOOST_OPTIONS}
+            define=BOOST_NO_CXX98_FUNCTION_BASE)
+          )
+        endif()
       else()
         set(BOOST_CXX_STANDARD ${CMAKE_CXX_STANDARD})
         set(BOOST_OPTIONS define=BOOST_ASIO_HAS_STD_STRING_VIEW)