diff --git a/Puma/src/weave.mk b/Puma/src/weave.mk
index a2b1ebd..8b6527c 100644
--- a/Puma/src/weave.mk
+++ b/Puma/src/weave.mk
@@ -25,6 +25,8 @@ ACFLAGS   += $(addprefix -a , $(ACFILES))
 #ACFLAGS   += $(CPPFLAGS) -I $(STEP1)/src -r $(GENDIR)/puma.acp
 ACFLAGS   += $(CPPFLAGS) -I $(STEP1)/src
 ACFLAGS   += --config $(CONFIG) --gen_size_type __SIZE_TYPE__ -k
+# workaround Clang/GCC C++14 issues
+ACFLAGS   += -D "__cplusplus=199711L"
 
 DEPDIR    := $(STEP1)/dep
 DEPFILES  := $(addprefix $(DEPDIR)/, $(notdir $(ACOBJECTS:.cc=.d)))