diff --git a/ChronoSync b/ChronoSync
index cb5c551..26d0329 160000
--- a/ChronoSync
+++ b/ChronoSync
@@ -1 +1 @@
-Subproject commit cb5c551fa9f95a283e8e1988ff2034c454321ab8
+Subproject commit 26d0329cc21afa38b44dcf04df4538e9d74c0429
diff --git a/waf-tools/default-compiler-flags.py b/waf-tools/default-compiler-flags.py
index e6e13fa..5ffba5e 100644
--- a/waf-tools/default-compiler-flags.py
+++ b/waf-tools/default-compiler-flags.py
@@ -15,7 +15,7 @@
     if conf.options.use_cxx11:
         defaultFlags += ['-std=c++0x', '-std=c++11']
     else:
-        defaultFlags += ['-std=c++03']
+        defaultFlags += ['-std=c++03', '-Wno-variadic-macros', '-Wno-c99-extensions']
 
     defaultFlags += ['-pedantic', '-Wall', '-Wno-long-long', '-Wno-unneeded-internal-declaration',
                      '-Wno-c++11-extensions', '-Wno-nested-anon-types']