Add -m32 and --32 flags to Makefile.linux to build a 32-bit version on a 64-bit platform

Libraries/graph_copy/Makefile.linux

@@ -2,21 +2,21 @@
 all: copy_graph_to_string.o copy_graph_to_string_interface.o copy_string_to_graph.o copy_string_to_graph_interface.o
 
 copy_graph_to_string.o: copy_graph_to_string.c copy_graph_to_string_implementation.c remove_forwarding_pointers_from_graph_implementation.c
-	gcc -O -S -fomit-frame-pointer -DLINUX32 copy_graph_to_string.c -o copy_graph_to_string.a
+	gcc -m32 -O -S -fomit-frame-pointer -DLINUX32 copy_graph_to_string.c -o copy_graph_to_string.a
 	sed -f s.sed copy_graph_to_string.a > copy_graph_to_string.s
-	as copy_graph_to_string.s -o copy_graph_to_string.o
+	as --32 copy_graph_to_string.s -o copy_graph_to_string.o
 	cp copy_graph_to_string.o "Clean System Files"/copy_graph_to_string.o
 
 copy_graph_to_string_interface.o: copy_graph_to_string_interface_linux.s
-	as copy_graph_to_string_interface_linux.s -o copy_graph_to_string_interface.o
+	as --32 copy_graph_to_string_interface_linux.s -o copy_graph_to_string_interface.o
 	cp copy_graph_to_string_interface.o "Clean System Files"/copy_graph_to_string_interface.o
 
 copy_string_to_graph.o: copy_string_to_graph.c copy_string_to_graph_implementation.c
-	gcc -O -S -fomit-frame-pointer -DLINUX32 copy_string_to_graph.c -o copy_string_to_graph.a
+	gcc -m32 -O -S -fomit-frame-pointer -DLINUX32 copy_string_to_graph.c -o copy_string_to_graph.a
 	sed -f s.sed copy_string_to_graph.a > copy_string_to_graph.s
-	as copy_string_to_graph.s -o copy_string_to_graph.o
+	as --32 copy_string_to_graph.s -o copy_string_to_graph.o
 	cp copy_string_to_graph.o "Clean System Files"/copy_string_to_graph.o
 
 copy_string_to_graph_interface.o: copy_string_to_graph_interface_linux.s
-	as copy_string_to_graph_interface_linux.s -o copy_string_to_graph_interface.o
+	as --32 copy_string_to_graph_interface_linux.s -o copy_string_to_graph_interface.o
 	cp copy_string_to_graph_interface.o "Clean System Files"/copy_string_to_graph_interface.o