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* [dpdk-dev] [PATCH 1/3] net/thunderx: disable pmd for gcc < 4.7
@ 2017-04-06 12:14 Ferruh Yigit
  2017-04-06 12:14 ` [dpdk-dev] [PATCH 2/3] event/octeontx: fix compilation for gcc < 4.6 Ferruh Yigit
                   ` (5 more replies)
  0 siblings, 6 replies; 20+ messages in thread
From: Ferruh Yigit @ 2017-04-06 12:14 UTC (permalink / raw)
  To: Jerin Jacob, Bruce Richardson, Harry van Haaren, Thomas Monjalon
  Cc: dev, Ferruh Yigit

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.yigit@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

^ permalink raw reply	[flat|nested] 20+ messages in thread

end of thread, other threads:[~2017-04-06 18:40 UTC | newest]

Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-04-06 12:14 [dpdk-dev] [PATCH 1/3] net/thunderx: disable pmd for gcc < 4.7 Ferruh Yigit
2017-04-06 12:14 ` [dpdk-dev] [PATCH 2/3] event/octeontx: fix compilation for gcc < 4.6 Ferruh Yigit
2017-04-06 12:26   ` Jerin Jacob
2017-04-06 12:14 ` [dpdk-dev] [PATCH 3/3] event/sw: fix build error for gcc 4.5.1 Ferruh Yigit
2017-04-06 12:21   ` Van Haaren, Harry
2017-04-06 12:33 ` [dpdk-dev] [PATCH 1/3] net/thunderx: disable pmd for gcc < 4.7 Jerin Jacob
2017-04-06 13:05 ` Ferruh Yigit
2017-04-06 13:46 ` [dpdk-dev] [PATCH v2 1/3] net/thunderx: disable pmd for older compilers Ferruh Yigit
2017-04-06 13:46   ` [dpdk-dev] [PATCH v2 2/3] event/octeontx: fix build error for gcc < 4.6 Ferruh Yigit
2017-04-06 13:46   ` [dpdk-dev] [PATCH v2 3/3] event/sw: fix build error for gcc 4.5.1 Ferruh Yigit
2017-04-06 13:59   ` [dpdk-dev] [PATCH v2 1/3] net/thunderx: disable pmd for older compilers Thomas Monjalon
2017-04-06 14:05     ` Ferruh Yigit
2017-04-06 14:09       ` Thomas Monjalon
2017-04-06 14:46         ` Ferruh Yigit
2017-04-06 17:05   ` [dpdk-dev] [PATCH v3 1/3] net/thunderx: disable PMD " Ferruh Yigit
2017-04-06 17:05     ` [dpdk-dev] [PATCH v3 2/3] event/octeontx: fix build error for gcc < 4.6 Ferruh Yigit
2017-04-06 17:05     ` [dpdk-dev] [PATCH v3 3/3] event/sw: fix build error for gcc 4.5.1 Ferruh Yigit
2017-04-06 18:40     ` [dpdk-dev] [PATCH v3 1/3] net/thunderx: disable PMD for older compilers Thomas Monjalon
2017-04-06 13:52 ` [dpdk-dev] [PATCH 1/3] net/thunderx: disable pmd for gcc < 4.7 Thomas Monjalon
2017-04-06 14:00   ` Jerin Jacob

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