+ifneq ($(C_COMPILER), PGI)
+CCOMMON_OPT += -Ofast -mvsx -fno-fast-math
+ifeq ($(C_COMPILER), GCC)
+ifneq ($(GCCVERSIONGT4), 1)
+$(warning your compiler is too old to fully support POWER9, getting a newer version of gcc is recommended)
+CCOMMON_OPT += -mcpu=power8 -mtune=power8
+else
+CCOMMON_OPT += -mcpu=power9 -mtune=power9
+endif
+else
+CCOMMON_OPT += -mcpu=power9 -mtune=power9
+endif
+else
+CCOMMON_OPT += -fast -Mvect=simd -Mcache_align
+endif
+ifneq ($(F_COMPILER), PGI)
+ifeq ($(F_COMPILER), IBM)
+FCOMMON_OPT += -O2 -qrecur -qnosave
+else
+FCOMMON_OPT += -O2 -frecursive -fno-fast-math
+endif
+ifeq ($(C_COMPILER), GCC)
+ifneq ($(GCCVERSIONGT4), 1)
+$(warning your compiler is too old to fully support POWER9, getting a newer version of gcc is recommended)
+FCOMMON_OPT += -mcpu=power8 -mtune=power8
+else
+FCOMMON_OPT += -mcpu=power9 -mtune=power9
+endif
+else
+FCOMMON_OPT += -mcpu=power9 -mtune=power9
+endif