diff -urEbwB jurand-1.3.1.orig/Makefile jurand-1.3.1/Makefile
--- jurand-1.3.1.orig/Makefile	2023-09-27 07:17:18.384159160 +0200
+++ jurand-1.3.1/Makefile	2023-09-27 08:55:18.229794175 +0200
@@ -12,7 +12,8 @@
 test: test.sh test-compile
 	@./$<
 
-CXXFLAGS += -g -std=c++2a -Isrc -Wall -Wextra -Wpedantic
+CXXFLAGS += -g -std=gnu++2a -Isrc -Wall -Wextra -Wpedantic -D_GLIBCXX_USE_CXX11_ABI=1
+LDFLAGS += -pthread
 
 $(eval $(call Variable_rule,target/compile_flags,$(CXX) $(CXXFLAGS)))
 $(eval $(call Variable_rule,target/link_flags,$(CXX) $(LDFLAGS) $(LDLIBS)))
diff -urEbwB jurand-1.3.1.orig/src/java_symbols.hpp jurand-1.3.1/src/java_symbols.hpp
--- jurand-1.3.1.orig/src/java_symbols.hpp	2023-09-27 07:17:18.384159160 +0200
+++ jurand-1.3.1/src/java_symbols.hpp	2023-09-27 08:42:56.218651442 +0200
@@ -630,14 +630,14 @@
 	
 	if (not parameters.in_place_)
 	{
-		auto osyncstream = std::osyncstream(std::cout);
+		auto oss = std::osyncstream(std::cout);
 		
 		if (not path.empty())
 		{
-			osyncstream << path.native() << ":\n";
+			oss << path.native() << ":\n";
 		}
 		
-		osyncstream.write(content.c_str(), content.size());
+		oss.write(content.c_str(), content.size());
 	}
 	else if (content.size() < original_content.size())
 	{