Merge pull request #51 from duck2/compact_mode

Enable PugiXML compact mode

Author: mithro

libs/EXTERNAL/libpugixml/CMakeLists.txt

@@ -19,4 +19,7 @@ set_target_properties(libpugixml PROPERTIES PREFIX "") #Avoid extra 'lib' prefix
 set(PUGIXML_SUPPRESS_FLAGS -w)
 target_compile_options(libpugixml PRIVATE ${PUGIXML_SUPPRESS_FLAGS})
 
+#Enable compact mode which reduces memory usage.
+add_definitions(-DPUGIXML_COMPACT)
+
 install(TARGETS libpugixml DESTINATION bin)