--- Makefile.orig	2018-09-09 05:56:50 UTC
+++ Makefile
@@ -436,7 +436,7 @@ LIBS = $(CUDAOBJS) $(PLUGINLIB) $(SBLIB)
 
 # CXX is platform dependent
 CXXBASEFLAGS = $(COPTI)$(CHARMINC) $(COPTI)$(SRCDIR) $(COPTI)$(INCDIR) $(DPMTA) $(DPME) $(FMM) $(COPTI)$(PLUGININCDIR) $(COPTD)STATIC_PLUGIN $(TCL) $(PYTHON) $(FFT) $(CUDA) $(MIC) $(MEMOPT) $(CCS) $(RELEASE) $(EXTRADEFINES) $(TRACEOBJDEF) $(EXTRAINCS) $(MSA) $(CKLOOP)
-CXXFLAGS = $(CXXBASEFLAGS) $(CXXOPTS)
+CXXFLAGS += $(CXXBASEFLAGS) $(CXXOPTS)
 CXXMICFLAGS = $(CXXBASEFLAGS) $(CXXOPTS) $(CXXMICOPTS)
 CXXTHREADFLAGS = $(CXXBASEFLAGS) $(CXXTHREADOPTS)
 CXXSIMPARAMFLAGS = $(CXXBASEFLAGS) $(CXXSIMPARAMOPTS)