From 8015ea217ecb040b525f843fd701ecab079e84ec Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Wed, 22 May 2019 22:13:12 +0200
Subject: [PATCH] codecvt fallback for g++4.8

---
 src/ifcparse/IfcCharacterDecoder.cpp | 20 +++++++++++++++++++-
 src/ifcparse/IfcCharacterDecoder.h   |  1 -
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/src/ifcparse/IfcCharacterDecoder.cpp b/src/ifcparse/IfcCharacterDecoder.cpp
index 24e2dbce00..c0957f7684 100644
--- a/src/ifcparse/IfcCharacterDecoder.cpp
+++ b/src/ifcparse/IfcCharacterDecoder.cpp
@@ -27,6 +27,13 @@
 #include <string>
 #include <sstream>
 #include <iomanip>
+#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ < 5
+#include <boost/locale/encoding_utf.hpp>
+using boost::locale::conv::utf_to_utf;
+#define CODECVT_BOOST_FALLBACK
+#else
+#include <codecvt>
+#endif
 
 #include "../ifcparse/IfcCharacterDecoder.h"
 #include "../ifcparse/IfcException.h"
@@ -334,10 +341,21 @@ std::wstring::value_type IfcUtil::convert_codepage(int codepage, int c) {
 	return r;
 }
 
+#ifdef CODECVT_BOOST_FALLBACK
+std::string IfcUtil::convert_utf8(const std::wstring& s) {
+    return utf_to_utf<char>(s.c_str(), s.c_str() + s.size());
+}
+
+std::wstring IfcUtil::convert_utf8(const std::string& s)
+{
+    return utf_to_utf<wchar_t>(s.c_str(), s.c_str() + s.size());
+}
+#else
 std::string IfcUtil::convert_utf8(const std::wstring& s) {
 	return std::wstring_convert<std::codecvt_utf8<std::wstring::value_type>>().to_bytes(s);
 }
 
 std::wstring IfcUtil::convert_utf8(const std::string& s) {
 	return std::wstring_convert<std::codecvt_utf8<std::wstring::value_type>>().from_bytes(s);
-}
\ No newline at end of file
+}
+#endif
\ No newline at end of file
diff --git a/src/ifcparse/IfcCharacterDecoder.h b/src/ifcparse/IfcCharacterDecoder.h
index d178099c05..d178bae71d 100644
--- a/src/ifcparse/IfcCharacterDecoder.h
+++ b/src/ifcparse/IfcCharacterDecoder.h
@@ -29,7 +29,6 @@
 
 #include <string>
 #include <sstream>
-#include <codecvt>
 
 #include "../ifcparse/IfcSpfStream.h"