PMD uses some compiler builtins and new compiler options. Tested with gcc 4.5.1 and following were not supported:
option: -Ofast macros: _Static_assert __ORDER_LITTLE_ENDIAN__ __ORDER_BIG_ENDIAN__ __BYTE_ORDER__ __atomic_fetch_add __ATOMIC_ACQUIRE __atomic_load_n __ATOMIC_RELAXED __atomic_store_n __ATOMIC_RELEASE It is not easy to fix all in PMD, disabling PMD for gcc version < 4.7 Signed-off-by: Ferruh Yigit <ferruh.yi...@intel.com> --- drivers/net/thunderx/Makefile | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/thunderx/Makefile b/drivers/net/thunderx/Makefile index 706250b..0b9f0a2 100644 --- a/drivers/net/thunderx/Makefile +++ b/drivers/net/thunderx/Makefile @@ -62,6 +62,14 @@ SRCS-$(CONFIG_RTE_LIBRTE_THUNDERX_NICVF_PMD) += nicvf_svf.c ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y) CFLAGS_nicvf_rxtx.o += -fno-prefetch-loop-arrays + +# Disable PMD for gcc < 4.7 +ifeq ($(shell test $(GCC_VERSION) -lt 47 && echo 1), 1) +$(warning thunderx pmd not supported by gcc < 4.7) +LIB = +SRC-y = +endif + endif CFLAGS_nicvf_rxtx.o += -Ofast -- 2.9.3
