From 1c19f0847125aaa092b1d5a8b83fd605b35f7590 Mon Sep 17 00:00:00 2001
From: Kristoffer Andersen <kristoffer_andersen@outlook.com>
Date: Mon, 2 Sep 2024 17:16:47 +0200
Subject: [PATCH] use a macro to change for boost > 1.86

---
 src/ifcparse/IfcGlobalId.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/ifcparse/IfcGlobalId.cpp b/src/ifcparse/IfcGlobalId.cpp
index 235e6443bf..e6c77e67c5 100644
--- a/src/ifcparse/IfcGlobalId.cpp
+++ b/src/ifcparse/IfcGlobalId.cpp
@@ -87,8 +87,12 @@ void expand(const std::string& s, std::vector<unsigned char>& v) {
     }
 }
 
-// A random number generator for the UUID
-static boost::uuids::basic_random_generator<std::mt19937> gen;
+// Define the macro to handle different Boost versions
+#if BOOST_VERSION >= 108600
+    static boost::uuids::basic_random_generator<std::mt19937> gen;
+#else
+    static boost::uuids::basic_random_generator<boost::mt19937> gen;
+#endif
 
 IfcParse::IfcGlobalId::IfcGlobalId() {
     uuid_data_ = gen();